CN1714973A - Miter saw having angle adjustment mechanism - Google Patents
Miter saw having angle adjustment mechanism Download PDFInfo
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- CN1714973A CN1714973A CN 200510081811 CN200510081811A CN1714973A CN 1714973 A CN1714973 A CN 1714973A CN 200510081811 CN200510081811 CN 200510081811 CN 200510081811 A CN200510081811 A CN 200510081811A CN 1714973 A CN1714973 A CN 1714973A
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- mitre saw
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Abstract
A miter saw including a base, a turntable, a support section extending from the turntable, and a circular saw unit supported to the support section. An adjustment mechanism is provided between the base and the turntable for performing fine-adjustment to the rotation angle of the turntable relative to the base. The adjustment mechanism is located at a front side of the turntable, and a digital display is provided near the adjustment mechanism for displaying the rotation angle.
Description
Technical field
The present invention relates to a kind of mitre saw, more particularly, relate to the mitre saw of the angled cutting that the relative protective plate of a kind of side surface that can carry out disk saw blade tilts to extend.
Background technology
In traditional desktop annular saw, workpiece such as wooden unit are fixed on the base part, and workpiece cuts by being positioned on the base part vertically moving circular-saw unit.If the inclined cut workpiece then must change the orientation of workpiece on base part.Therefore, reduced workability.
Japanese Patent Application Publication application No.2000-254817 discloses a kind of mitre saw that comprises base part, support section and circular-saw unit.Base part comprises pedestal and is fixed on the pedestal and around the panoramic table of its axis rotation.Workpiece is fixed on the panoramic table.Support section extends upward and lateral tilt from panoramic table.Circular-saw unit is positioned on the base part and can pivots and supports to support section movably.Circular-saw unit comprises disk saw blade and is used for the motor of rotating blade.
For angled cutting, panoramic table rotates to change the angle of the relative protective plate of disk saw blade side surface around its axis angledly.In order to be carried out to the angle cutting in required angle, locate to use the rule of data plate at one of pedestal and panoramic table.Yet rule may be coated with the cutting chip that produces during the cutting, thereby has reduced the visuality of rule.
In addition, under the situation of required rule position, will cause inevitable mistake manually rotating back to turntable.For example, accurately set the position of rotation of panoramic table with very difficult with the speed of 0.1 degree.
In addition, in order to guarantee to cut cutting stability, must increase the size and the weight of mitre saw with relative heavy in section area wooden unit.Therefore, at 1 degree or still less accurately set panoramic table in the scope in the required angle difficulty more that will become.Therefore, it is consuming time and require skill panoramic table accurately to be positioned at required rotary angle position.
Summary of the invention
Therefore, when meticulous angle, also can accurately provide panoramic table required angle position with work seldom even one of purpose of the present invention is to provide a kind of, and can provide for the clear visual mitre saw of described angle.
Aforementioned and others of the present invention realize by a kind of mitre saw is provided, comprise pedestal, panoramic table, circular-saw unit, support section and governor motion.Pedestal is used to support the workpiece on it.Panoramic table is supported on the pedestal and around the rotation rotation of relative pedestal.Circular-saw unit rotatably supports disk saw blade.Support section is set to position on the panoramic table and on panoramic table and can pivots and support circular-saw unit movably.Governor motion is arranged between pedestal and the panoramic table, and is arranged to the anglec of rotation of the relative pedestal of panoramic table is carried out meticulous adjusting.
In another aspect of this invention, provide a kind of mitre saw, comprised pedestal, panoramic table, circular-saw unit, support section, governor motion, locking receiving unit, lock portion.The locking receiving unit is arranged on the predetermined anglec of rotation that panoramic table was gone up and limited to one of pedestal and panoramic table.Lock portion and locking receiving unit effect and be arranged on pedestal and panoramic table in all the other one go up the anglec of rotation of being scheduled to fixing panoramic table.Do the time spent when lock portion breaks away from the locking receiving unit, governor motion carries out meticulous adjusting to panoramic table with respect to the anglec of rotation of pedestal.
Description of drawings
In the drawings:
Fig. 1 shows the perspective view of watching mitre saw according to first embodiment of the invention from its front side;
Fig. 2 shows the perspective view of watching mitre saw according to first embodiment from its rear side;
Fig. 3 is the front view that shows according to the mitre saw in first embodiment;
Fig. 4 is the front view that shows according to the mitre saw in first embodiment, and specifically shows the heeling condition of circular-saw unit;
Fig. 5 is the bottom view that shows according to the mitre saw in first embodiment;
Fig. 6 is the cross-sectional left view that shows according to the mitre saw in first embodiment;
Fig. 7 is the amplification cross section right side view that shows according to the major part of the mitre saw in first embodiment;
Fig. 8 is the bottom view that shows according to the panoramic table in the mitre saw of first embodiment;
Fig. 9 shows the cross section right side view be used for finely tuning according to the governor motion of the panoramic table position of rotation of the mitre saw of first embodiment;
Figure 10 shows to be used for finely tuning according to what the governor motion of the panoramic table position of rotation of the mitre saw of first embodiment was watched from the bottom side to penetrate view;
Figure 11 is the lower view that shows according to panoramic table in the mitre saw of first embodiment;
Figure 12 shows to be used for being supported on the cross sectional view that the support according to the rotation of the mitre saw pedestal place panoramic table of first embodiment is provided with;
Figure 13 is the plan view that shows according to the rotation amount detecting unit in the mitre saw of first embodiment;
Figure 14 shows to be used for according to the pin of the mitre saw rotation amount detecting unit of first embodiment and the amplification cross sectional view of bolt;
Figure 15 be show according to the mitre saw medium dip campaign of first embodiment support and sloping portion between the exploded sectional view that concerns of position;
Figure 16 is the rearview that shows according to sloping portion in the mitre saw of first embodiment and rotation amount detecting unit;
Figure 17 shows to be used for regulating subtly according to the sloping portion at the inclination angle of the sloping portion of the mitre saw of first embodiment and the explanation view of governor motion;
Figure 18 shows the cross sectional view of cutting open along the line XVIII-XVIII of Figure 17;
Figure 19 is the view that shows according to the tilt quantity detecting unit in the first embodiment mitre saw;
Figure 20 shows the cross sectional view of cutting open along the line XX-XX of Figure 19;
Figure 21 is the view that shows according to the tilt quantity detecting unit in the mitre saw of first embodiment;
Figure 22 shows the cross sectional view of cutting open along Figure 19 center line XXII-XXII;
Figure 23 is the plan view that shows according to the digital display in the mitre saw of first embodiment;
Figure 24 is the view that shows according to the control circuit in the mitre saw of first embodiment;
Figure 25 shows the cross sectional view of cutting open along Fig. 9 center line XXIV-XXIV;
Figure 26 shows the plan view be used for according to the rotation amount governor motion of the panoramic table of the mitre saw of first embodiment;
Figure 27 is the plan view that shows the rotation amount governor motion that is used for panoramic table, specifically shows according to the temporary fixed position in the mitre saw of first embodiment;
Figure 28 is the plan view that shows the rotation amount governor motion that is used for panoramic table, specifically shows according to the meticulous adjustment state in the mitre saw of first embodiment;
Figure 29 is the plan view that shows the rotation amount governor motion that is used for panoramic table, specifically shows according to the position that is completely fixed in the mitre saw of first embodiment;
Figure 30 shows to be used for the rearview of meticulous adjusting according to the mechanism at the circular-saw unit inclination angle of the mitre saw of first embodiment;
Figure 31 shows the flow chart be used for showing according to the operation sequence at the inclination angle of the anglec of rotation of the mitre saw panoramic table of first embodiment and disk saw blade;
Figure 32 shows first improved procedure, and it is the plan view that demonstrates the mechanism of the anglec of rotation that is used for meticulous adjusting panoramic table;
Figure 33 shows second improved procedure, and it is the cross sectional view that demonstrates the mechanism of the anglec of rotation that is used to regulate panoramic table;
Figure 34 is the bottom view that shows second improved procedure;
Figure 35 is the front sectional view that shows second improved procedure;
It is the cross sectional view that demonstrates the mechanism that is used to regulate the circular-saw unit inclination angle that Figure 36 shows the 3rd improved procedure and its;
It is the rearview that demonstrates the mechanism that is used to regulate the circular-saw unit inclination angle that Figure 37 shows the 4th improved procedure and its;
Figure 38 is the rearview that shows according to the 4th improved procedure;
It is the rearview that demonstrates the mechanism at the inclination angle that is used to regulate circular-saw unit that Figure 39 shows the 5th improved procedure and its;
It is the rearview that demonstrates the mechanism that is used to regulate the circular-saw unit inclination angle that Figure 40 shows the 6th improved procedure and its;
Figure 41 shows the 7th improved procedure and it is the rearview of inclination fixed test unit;
Figure 42 shows the cross sectional view of cutting open along Figure 41 center line XLI-XLI;
Figure 43 shows the 8th improved procedure and it is the rearview of tilt quantity detecting unit;
Figure 44 shows the 9th improved procedure and it is for carrying out the block diagram of improved control circuit to the control circuit among Figure 24;
Figure 45 shows the tenth improved procedure and it is the perspective view of slide type miter saw;
Figure 46 shows the block diagram that is created in according to two trains of impulses in the rotation amount detecting unit in the first embodiment of the invention;
Figure 47 shows the block diagram that is created in according to two trains of impulses in the tilt quantity detecting unit in the first embodiment of the invention;
Figure 48 shows the 11 improvement mode and it is the bottom view that is used for the mechanism of the meticulous adjusting panoramic table anglec of rotation;
It is the plan view of mechanism that is used for the anglec of rotation of meticulous adjusting panoramic table that Figure 49 shows the 12 improved procedure and its, and wherein panoramic table in its zero degree position; And
Figure 50 shows the 12 improved procedure and it is the plan view that is used for the mechanism of the meticulous adjusting panoramic table anglec of rotation, and wherein panoramic table is that angle rotates to desired location.
The specific embodiment
Below with reference to Fig. 1 to 31,46 and 47 mitre saws that illustrate according to first embodiment of the invention.As shown in Figure 1, mitre saw 1 comprises and is installed in support or is used for fixing on the ground workpiece on it such as the circular-saw unit 4 of the base part 2 of wood, cut workpiece and support annular saw part 4 and can pivot and shift to movably and support section 3 away from base part 2 and relative base part lateral tilt.
As shown in Figure 1, base part 2 comprises pedestal 11, panoramic table 21 and the protective plate 12 as above ground portion.Panoramic table 21 is supported on the pedestal 11 and around the relative pedestal 11 of its axis and rotates.Panoramic table 21 is with pedestal 11 supporting workpieces such as wooden unit.Protective plate 12 extends and is supported on the pedestal 11 in side direction on the pedestal 11.Protective plate 12 has at the abutment surface that extends laterally and towards preceding and contacts side surfaces workpiece and is used to locate workpiece.In the following description, the side of facing of described abutment surface is defined as the front side, and the bearing of trend of protective plate is defined as left/right or lateral, and the ground side of pedestal 11 is defined as downside.
As shown in figs. 1 and 3, pedestal 11 comprises right pedestal 11A and the left pedestal 11B that panoramic table 21 inserts wherein.Each top surface of each pedestal 11A, 11B is all as the workpiece fixed surface.Shown in Fig. 3 and 5, pedestal 11 also comprises arch section 16, and it is arranged between right pedestal 11A and the left pedestal 11B and protrudes forward.Arch section 16 has its center peripheral side consistent with the rotating shaft of panoramic table 21.As shown in Figure 5, peripheral side has the lower end, and it is formed with a plurality of locking slot 16a with the ledge 26B effect of the check lock lever 26 that will be explained below.
A plurality of locking slot 16a at the axis of reference (0 degree) that extends before the axial rotary of panoramic table 21 relatively perpendicular to the direction of protective plate 12 at a predetermined angle as 15 degree, 30 degree and 45 degree location.In addition, as shown in Figure 5, coupling part 15 is provided for the position of directly facing as the mounting points on ground right pedestal 11A being connected to left pedestal 11B.Coupling part 15 has the center, and it is provided with the rotation support 19 that is used for rotatably supporting panoramic table 21.Rotation is supported 19 and is limited rotation.
As shown in figs. 1 and 3, protective plate 12 comprises right protective plate 12A that is fixed to right pedestal 11A and the left protective plate 12B that is fixed to left pedestal 11B.These protective plates 12A and protective plate 12B have the abutment surface with the workpiece adjacency, and abutment surface extends in the upper surface direction of the pedestal 11 that is basically perpendicular to conveying workpieces.As shown in Figure 3, left protective plate 12B has pivot 12D, and independent pivot protective plate 12C pivotally supports to left protective plate 12B by pivot 12D.Therefore, as shown in Figure 4, even circular-saw unit 4 lateral tilts, the disk saw blade 123 that will be explained below in the circular-saw unit 4 also can be avoided away from the track of blade 123 by moving pivot protective plate 12C pivotally relative to the direct adjacency of protective plate 12.
As illustrated in Figures 5 and 6, arc external gear teeth part 20 is fixed to the upper surface of coupling part 15 with bolt 20A in the position of rotation support 19 back.Arc external gear teeth part 20 heart and rotation therein supported on the consistent imaginary circle of 19 central axis.Arc external gear teeth part 20 is movable to be used to detect the angle rotation amount of panoramic table 21 relatively for rotation amount detecting unit 51 (Figure 11 and explanation in the back).
As shown in Figure 1, panoramic table 21 comprises the circular table part 22 that is inserted between the right side and left pedestal 11A and the 11B, and has workpiece upper surface fixed thereon.The rotation of circular table part 22 qualification panoramic tables 21 therein.Panoramic table 21 also comprises from circular table part 22 and extends forward and be positioned at neck platform part 23 on the arch section 26.Circular table part 22 is concordant with the upper surface of pedestal 11 with the upper surface of neck platform part 23.Semicircle recess 24 is formed at panoramic table 21.Semicircle recess 24 with the spindle structural openings, and has the semi-circular profile consistent with the profile of disk saw blade 123 in vertical direction at the upper surface of circular table part 22 and neck platform part 23.Upper shed is coated with spindle slit plate 25, its have be formed with when circular-saw unit 4 pivots when panoramic table moves, allow disk saw blade 123 to pass the core of slit 25a wherein.
Battery case 132 (Fig. 6) is arranged on the semicircle recess and in the left side of slit 25a.Battery case 132 is used for electric current is provided to the microcomputer 142 that will be explained below.
Shown in Fig. 6 and 7, rotating shaft part 28 be arranged on semicircle recess 24 the bottom and with the position of the centrally aligned of circular table part 22.Rotating shaft part 28 is contained in the rotation of pedestal 11 and supports in 9 spaces that limit.Rotating shaft part 28 and rotation are supported 9 and are formed with through hole, and bolt 32 extends through this through hole and rotates to allow panoramic table 21 relative pedestals 11, and does not need from pedestal 11 dismounting panoramic tables 21.
The front end that regulon 41 (Fig. 1) is arranged on neck platform part 23 is used to regulate the angle position of rotation of panoramic table 21.Shown in Fig. 7 and 8, pin standing part 30 and bolting part 31 are protruded from the lower surface of panoramic table 21.In addition, the rotation amount detecting unit 51 (Fig. 8) that is connected with the external gear teeth part 20 of pedestal 11 is arranged on below pin standing part 30 and the bolting part 31, is used to detect the angle rotation amount of panoramic table 21.
As illustrated in Figures 5 and 6, elasticity check lock lever 26 is below arch section 16 and be fixed to the lower surface of panoramic table 21 with bolt 27 in the front of rotating shaft part 28.Check lock lever 26 extends to the front position (Fig. 8) of regulon 41.The fore-end of check lock lever 26 be positioned at regulon 41 below, and upwards folding along the front end surface of regulon 41.Pressing part 26A is arranged on the free front end of check lock lever 26 downwards.Check lock lever 26 is provided with part 26B protruding upward in the position with the rear surface opposite of the outer wall of arch section 16.An effect mutually of selecting among part 26B protruding upward and a plurality of locking slot 16a that are formed on arch section 16 lower surfaces.Correspondingly, owing to the angular movement of check lock lever 26 with panoramic table 21 moves angledly, so the angle position of rotation of panoramic table 21 is fixing by the locking slot 16a effect of part 26B protruding upward and selection.Pressing part 26A is positioned at the front side of mitre saw 1 downwards.Usually, the user is positioned at the front of mitre saw 1.Therefore, the user is easy near downward pressing part 26A.
As shown in Figures 9 and 10, regulon 41 comprises front baffle 42, and check lock lever steady pin 49 lateral sliding ground support and are used to avoid part 26B protruding upward to act on mutually with one of locking slot 16a.As shown in Figure 5, check lock lever steady pin 49 has the end portion that is formed with annular holddown groove 49a.In addition, spring 50 is arranged on and is used for advancing pin 49 on the check lock lever steady pin 49 to the right.Colulus 26C extends upward from the left side of check lock lever 26.The free end of colulus 26C is positioned at the position of the sliding trace stack of relative check lock lever steady pin 49.Usually, check lock lever steady pin 49 passes through the bias force of spring 50 to right-hand offset.In the case, colulus 26C and annular holddown groove 49a disengaging effect are so that one of part 26B protruding upward and locking slot 16a effect.On the other hand, if the downward pressing part 26A of check lock lever 26 is pushed down and check lock lever steady pin 49 is promoted left in Figure 25, then when discharging downward pressing part 26A, colulus 26C can act on mutually with annular holddown groove 49a.As a result, the effect of one of part 26B protruding upward and locking slot 16a is prevented to allow panoramic table 21 freedom to rotate to required angle angledly.
Shown in Fig. 8 to 10, regulon 41 also comprises fixed handle 43, adjusting bolt 44 and the workbench contact 45 except check lock lever steady pin 49.The front baffle 42 of panoramic table 21 has antetheca 47 (Fig. 9) and rear wall 48 (Fig. 9), and is formed with open front 42a and sidewise hole.Fixed handle 43 has the shaft portion 43A that extends through this open front 42a in forward/backward direction, and has the end interior far away that can contact with the outside surface pressing of the arch section 16 of pedestal 11.Regulate bolt 44 and extend through described sidewise hole in direction perpendicular to shaft portion 43A.Regulate the button 44B that bolt 44 comprises shaft portion 44A and a pair of two ends at shaft portion 44A.Shaft portion 43A with regulate the zone that bolt 44 intersects and be formed with pin thread.Regulate bolt 44 and also be formed with pin thread in the zone that intersects with shaft portion 44A.
As shown in Figures 9 and 10, spring 16 is for laterally and put and be inserted between workbench contact 45 and the antetheca 47 and be used to allow part 45 to be contiguous to rear wall 48.By threadably advancing fixed handle 43, shaft portion 43A corresponding piece 45 moves backward.Yet, when the inner far away of shaft portion 43A behind the surface, outside of arch section 16, fixed handle 43 can not move backward again.Otherwise, since with the threaded function of shaft portion 43A, part 45 moves forward.
Each end of regulating bolt 44 all is provided with front baffle 42 and is inserted into knob 44B between it.Therefore, regulate bolt 44 and be not displaced sideways, that is, do not move at its axial direction relative to front baffle 42.By regulating bolt 44 around its axis rotation, between part 45 and the shaft portion 44A relative motion appears.In the case, because shaft portion 44A is mobile at its axial direction, so, laterally move in the part 45 former frame framves 42.The angle position of rotation of panoramic table 21 is fixed on the precalculated position by the effect of one of part 26B protruding upward and locking slot 16a.Yet, between part 26B protruding upward and the locking slot 16a near the predetermined angle anglec of rotation as the special locking slots of 0 degree and 15 degree near the effect of position be prevented from control so that near these angles, carry out the meticulous angle position of panoramic table 21.
When the end of shaft portion 44A closely contacted with the surface, arch section 16a outside of pedestal 11, it is as a whole with pedestal 11 that fixed handle 43 is considered to.Therefore, the lateral movement of workbench contact 45 relative front baffles 42 means the lateral movement of front baffle 42 relative pedestals 11, that is, and and the small lateral angles motion of panoramic table 21 relative pedestals 11.
Shown in Figure 12 and 13, rotation amount detecting unit 51 comprises the can 52 that supports to panoramic table 21.In shell 52, be equipped with the amplifier that comprises first gear pair 56 and second gear pair 58, test section 60 and optical pickocff 62. Axle 57,59 and 61 is arranged on and rotatably supports to shell 52.First gear pair 56 comprises the first gear 56A and the second gear 56B.The first gear 56A outwards protrudes from shell 52, and with external gear teeth part 20 engagement.The second gear 56B is coaxial and as a whole with the first gear 56A, and with second gear pair, 58 engagement.The diameter of the second gear 56B is greater than the diameter of the first gear 56A.The first and second gear 56A and 56B are around axle 57 rotations, and the major part of the second gear 56B and the first gear 56A is arranged in the shell 52.
A pair of light emission and receiving element and other a pair of light emission and receiving element are in angled ground of the circumferencial direction displacement of discoid detection piece 60B.Microcomputer 142 receives as shown in figure 46 two pulse train A that are offset 90 degree each other and the B corresponding to described angular deflection.
Because two the pulse train A and the B that detect are offset 90 degree each other, therefore, direction of rotation that can test disks shape detection piece 60B.In other words, can detect the rotary direction of angle of panoramic table 21, direction is one of clockwise direction and counter clockwise direction.
More particularly, with regard to pulse train A and B among Figure 46, high level and low level are represented by " 1 " and " 0 " respectively.Suppose that pulse present among the pulse train A is " 0 ", and present pulse is " 0 " among the pulse train B.Then, if present pulse is " 1 " among the pulse train A, and present pulse is " 0 " among the pulse train B, and then the rotary direction of angle of panoramic table 21 is assumed to be clockwise direction, that is, and to the right direction among Figure 46.On the other hand, suppose that pulse present among the pulse train A is " 0 ", and present pulse is " 0 " among the pulse train B, if present pulse is " 0 " among the pulse train A, and among the pulse train B present pulse be " 1; then the rotary direction of angle of panoramic table 21 is assumed to be counterclockwise, that is, left direction among Figure 46.In some cases, the gear of rotation amount detecting unit 51 ratio is set at so that provide panoramic table every rotation 1 degree, test section 60 rotate to be 72 degree.
As shown in figure 13, in rotation amount detecting unit 51, pin elongated hole 53 and bolting district 54 are formed at shell 52 places of first gear pair, 56 adjacent domains.Pin 63 extends through pin elongated hole 53.Bolting district 54 has the C type structure of open end portion.As shown in figure 14, when bolt 64 was connected to bolting part 31, as long as unclamp bolt 64, bolting district 54 just can separate with bolt 64.The open end portion in bolting district 54 allows rotation amount detecting unit 51 to move pivotally, and simultaneously, the bolt 64 that unclamps extends into bolting part 31.Therefore, rotation amount detecting unit 51 relative panoramic tables 21 pivotally rotate around pin 63.In addition, the pivot position of rotation amount detecting unit 51 by fixing tight bolt 64 relatively panoramic table 21 be fixed on the angle of needs.By way of parenthesis, spring 64A is inserted between bolt 64 and the bolting part 31, so that spring 64A plays the effect of spring washer.Therefore, revolving force always axially is applied to bolt 64 at it, and it has prevented that bolt 64 from rotating freely around its axis.As a result, even bolt 64 unclamps, also can prevent because the bolt 64 that vibration causes loosens with the accident of bolting part 31.
As shown in figure 11, shell 52 has adjacent area 52A, and panoramic table 21 has the adjacent plate 21A that protrudes and face with adjacent area 52A from the lower surface of panoramic table 21 downwards.When rotation amount detecting unit 51 was connected to panoramic table 21, spring 55 was inserted between adjacent plate 21A and the adjacent area 52A.By the bias force of spring 55, the first gear 56A of first gear pair 56 compresses external gear teeth part 20.Therefore, can suppress the flutter of the relative external gear teeth part 20 of the first gear 56A, the result can accurately detect the angle rotation of panoramic table 21 relative pedestals 11.
Shown in Fig. 6 and 7, panoramic table 21 has the rear end that is provided with banking motion support 71.Support section 3 comprises the sloping portions 74 that relative tilt motion support 71 is tilted.
As shown in Figure 6, banking motion support 71 rearmost ends from panoramic table 21 extend upward.As shown in figure 15, banking motion support 71 is formed with concordant with the upper surface of panoramic table 21 and coaxial with the width center line of slit 25a supported hole 72 (Fig. 1).Sloping portion 74 has the pin bolt 76 that injects supported hole 72, supports 71 so that sloping portion 74 is connected to banking motion.Banking motion supports 71 and has the wall that contacts with sloping portion 74, and wall is formed with circular recess part 71a.The arc inner tooth gear teeth 77 are fixed to circular recess part 71a by the bolt (not shown).The arc inner tooth gear teeth 77 are therein on the heart imaginary circle consistent with the central axis of supported hole 72.
As shown in figure 18, sliding wall 78 is arranged on sloping portion 74 places and is positioned at the position of supporting 71 sliding-contacts with banking motion.Pivot hole 75 is formed at the position of sliding wall 78 near the center, and pin bolt 76 extends through pivot hole 75.Therefore, when sloping portion 74 relative tilts motion support 71 pivots were mobile, sliding wall 78 was in the rear side of banking motion support 71 and the contour edge sliding-contact of circular recess part 71a.Rear wall 74A extends back from the edge of sliding wall 78.That is to say that rear wall 74A is basic parallel with pin bolt 76, and supporting 71 direction extensions from banking motion to sloping portion 74.
As shown in figure 16, its profile prolongs pivot hole 75 position to the right that slit 79 is formed in the sloping portion 74 and is positioned at sloping portion 74 by the arc of arc floor 80 restrictions.Prolong the surface opening of slit 79, and be positioned on the imaginary circle consistent of its center with the central shaft of pivot hole 75 at sliding wall 78.Banking motion support 71 is formed with the holes for clamping 73 with clamp shaft 81 (back explanation) threaded function.Holes for clamping 73 is orientated as and is prolonged slit 79 in the face of relation.
Tilt quantity detecting unit 101 be arranged on the left side of pivot hole 75 and be positioned at by sliding wall 78 and rear wall 74A around the position.Tilt quantity detecting unit 101 be arranged for detect sloping portion 74 relatively be arranged on the banking motion that the arc inner tooth gear teeth 77 wherein interrelate and support 71 tilt quantity.
The position of pair of angled support arm 84 on pivot hole 75 extends upward from sloping portion 74 and is used to support circular-saw unit 4.Inclination supporting pin 85 (Figure 15) extends between paired inclination support arm 84,84 and is used for circular-saw unit 4 is connected to support section 3.The end that lid 87 (Fig. 2) are arranged on rear wall 74A is used for protection extension slit floor 80, tilt quantity detecting unit 101 and pin bolt 76.Therefore, these parts 80,101 and 76 are not exposed in the atmosphere.Arm support 86 (Fig. 1) are arranged on left bank support arm 84 places and are used for support arm 127 (Fig. 1 will be explained below).
As shown in figure 18, clamp shaft 81 has and is formed with the end that is used for the pin thread of holes for clamping 73 threaded function.Therefore, the slant range of sloping portion 74 relative tilts motion support 71 limits by the moving range that prolongs the clamp shaft 81 in the slit 79.In the embodiment of explanation, slant range is 45 degree.
As shown in figure 18, the arc floor 80 of qualification prolongation slit 79 extends back from the back of sloping portion 74.Clamping bar 82 is arranged on the rear end of clamp shaft 81.Assembling spring 83A separator 83 therein is inserted between clamping bar 82 and the arc floor end face after 80s.Because clamp shaft 81 supports 71 holes for clamping 73 threaded function with banking motion, so clamping bar 82 and separator 83 support 71 to banking motion and move in response to the pivoting action of clamping bar 82 around the axis of clamp shaft 81 when screw down clips mandrel 81.Because for the arc floor 80 of sloping portion 74 parts is present between separator 83 and the banking motion support 71, so arc floor 80 is inserted in separator 83 and banking motion with clamping and supports between 71.Therefore, between sliding wall 78 and banking motion support 71, produce frictional force, support 71 so that sloping portion 74 is fixed to banking motion with the well azimuth of needs.Therefore, clamping unit is made of clamp shaft 81, clamping bar 82, separator 83 and spring 83A.Owing in separator 83, be provided with spring 83A, so clamping bar 82 relative tilts motion support 71 and arc floor 80 promote backward.As a result, can suppress the accident pivoting action of clamping bar 82 to reduce vibration.
Shown in Figure 17 and 18, the meticulous control module 91 of tilt quantity is used for the tilt quantity that sloping portion 74 is controlled in relative tilt motion support 71 subtly near being arranged on clamp shaft 81.The meticulous control module 91 of tilt quantity comprise the arc gear wheel tooth 92 that is fixed to sloping portion 74, with the rotating shaft 93 of arc gear wheel tooth 92 engagement and with the adjusting knob 94 of rotating shaft 93 engagement.Arc gear wheel tooth 92 is positioned on the imaginary circle consistent with the central axis of pivot hole 75 of its center.In addition, arc gear wheel tooth 92 is fixed on along the position (Figure 17) of the radially outward edge that prolongs slit 79.Rotating shaft 93 rotatably supports to banking motion support 71 and is extending back near the direction that is parallel to clamp shaft 81.Rotating shaft 93 comprises the first gear 93A with arc gear wheel tooth 92 engagement.Rotating shaft 93 also comprises having greater than the diameter of the first gear 93A diameter and be arranged on the second gear 93B of rotating shaft 93 rear ends.Adjusting knob 94 and clamp shaft 81 are coaxial and can be rotatably set on it.Adjusting knob 94 and clamp shaft 81 coaxial is provided with can conserve space, thereby improves the enforcement or the packing of the meticulous control module 91 of tilt quantity.
The position that integrally and coaxially is arranged on adjusting knob 94 fronts with the 3rd gear 94A and the adjusting knob 94 of the second gear 93B engagement.By way of parenthesis, because arc gear wheel tooth 92 is connected to adjusting knob 94 drivingly, so, as long as moving obliquely, sloping portion 94 is used to tilt circular-saw unit 4, then adjusting knob 94 just continues rotation.
Shown in Figure 19 and 20, tilt quantity detecting unit 101 comprises can 102, comprises the amplifier of first gear pair 106 and second gear pair 108, test section 110 and optical pickocff 112 that these elements all are assemblied in the shell 102.Axle 107,109 and 111 all is arranged on and rotatably supports to shell 102.First gear pair 106 supports to axle 107 and comprises the first gear 106A and the second gear 106B.The first gear 106A outwards protrudes from shell 102, and projection extends by the hole (not shown) that is formed in the sloping portion 74, and with the arc inner tooth gear teeth 77 engagement.The second gear 106B is coaxial and as a whole with the first gear 106A, and with second gear pair, 108 engagement.The diameter of the second gear 106B is greater than the diameter of the first gear 106A.The first and second gear 106A and 106B are around the axis rotation of axle 107, and the major part of the second gear 106B and the first gear 106A is arranged in the shell 102.
Second gear pair 108 comprises the 3rd gear 108A and the 4th gear 108B.The 3rd gear 108A and the second gear 106B engagement.The 4th gear 108B is coaxial and as a whole with the 3rd gear 108A, and with test section 110 engagement.The diameter of the 4th gear 108B is greater than the diameter of the 3rd gear 108A.The third and fourth gear 108A and 108B are around the rotation of the axis of axle 109 and be arranged in the shell 102.
Test section 110 comprise with the 5th gear 110A of the 4th gear 108B engagement and with the coaxial and as a whole discoid detection piece 110B of the 5th gear 110A.Test section 110 is around the rotation of the axis of axle 111 and be arranged in the shell 102.Discoid detection piece 110B is formed with 100 radial slit 110C.Optical pickocff 112 has a pair of support disk shape detection piece 110B arm therein that is used for.Detect the anglec of rotation that slit 110C is used for test disks shape detection piece 110B at described arm place.
Optical pickocff 112 comprises two light receiving element (not shown) that two light emission part (not shown) and each are all faced with each light emission part.Discoid detection piece 110B is between light emission part and light receiving element.Rotation according to discoid detection piece 110B, from the light of two light emission parts emission by each slit 110C and arrive the light receiving element, and the entity area by discoid detection piece 110B alternately cuts off, described entity area between adjacent slit 110C and 110C to produce optical pulse.
A pair of light emission and receiving element and other a pair of light emission and receiving element are offset at the circumferencial direction of discoid detection piece 110B angledly.Microcomputer 142 receives as shown in figure 47 two pulse train A that are offset 90 degree each other and the B corresponding to angular deflection.
Because two the pulse train A and the B that detect are offset 90 degree each other, therefore, direction of rotation that can test disks shape detection piece 110B.In other words, can detect the incline direction of circular-saw unit 4, described direction is one of clockwise direction and counter clockwise direction.
More particularly, with regard to pulse train A and B among Figure 47, high level and low level are represented by " 1 " and " 0 " respectively.Suppose that pulse present among the pulse train A is " 0 ", and present pulse is " 0 " among the pulse train B.Then, if present pulse is " 1 " among the pulse train A, and present pulse is " 0 " among the pulse train B, and then the incline direction of sloping portion 74 is assumed to be clockwise direction, that is, and left direction among Figure 47.On the other hand, suppose that pulse present among the pulse train A is " 0 ", and present pulse is " 0 " among the pulse train B, then, if pulse present among the pulse train A is " 0 ", and present pulse is that " 1, then the incline direction of sloping portion 74 is assumed to be counterclockwise; promptly, to the right direction among Figure 47 among the pulse train B.By way of parenthesis, the gear ratio of tilt quantity detecting unit 101 is set at so that provide the every angles of inclination of sloping portion 74 1 degree, and test section 110B rotates to be 72 degree.
As shown in figure 19, in tilt quantity detecting unit 101, pin elongated hole 103 and bolting district 1044 are formed at shell 102 places of first gear pair, 106 neighbouring parts.Pin 113 extends through pin elongated hole 103.Bolting district 104 has the C type structure of open end portion.As shown in figure 22, when bolt 114 was connected to bolting part 104, as long as unclamp bolt 114, bolting district 104 just can separate with bolt 114.The open end portion in bolting district 104 allows tilt quantity detecting unit 101 to move pivotally, and simultaneously, the bolt 114 that unclamps extends into bolting part 104.Therefore, tilt quantity detecting unit 101 relative tilt parts 74 pivotally rotation in the size restricted portion of pin 113 in bolting district 104.In addition, the pivot position of tilt quantity detecting unit 101 can be by the fixed angle of fixing tight bolt 114 relative tilt parts 74 with needs.By way of parenthesis, spring 114A is inserted between bolt 114 and the sloping portion 74, so that spring 114A plays the effect of spring washer.Therefore, reaction force always is applied to bolt 114 at its axial direction, and it has prevented that bolt 114 from rotating freely around its axis.As a result, even bolt 114 unclamps, also can prevent because the bolt 114 that vibration causes loosens with the accident of sloping portion 74.
As shown in figure 19, shell 102 has adjacent area 102A.When pivot amount detecting unit 101 was connected to sloping portion 74, spring 105 was inserted in adjacent area 102A and limits between the circumferential rib of pivot hole 75.By the bias force of spring 105, the first gear 106A of first gear pair 106 compresses the arc inner tooth gear teeth 77.Therefore, can suppress the vibration of the relative arc inner tooth gear teeth 77 of the first gear 106A, the result can accurately detect the motion of sloping portion 74 relative tilts and support 71 tilt quantity (pivot amount).
If the first gear 106A is biased to the position with 77 effects of the arc inner tooth gear teeth, then tilt quantity detecting unit 101 may be difficult to realize to the connection of sloping portion 74.Connection work for convenience, tilt quantity detecting unit 101 usefulness bolts 114 temporarily anchor to sloping portion 74 with spring 105 compressed special pivot orientation as shown in figure 21.This orientation provides sufficient space between the first gear 106A and the arc inner tooth gear teeth 77.Then, release bolt 114 is so that tilt quantity detecting unit 101 is shifted to the arc inner tooth gear teeth 77 by the bias force pivot of spring 105.Like this, the first gear 106A and the arc inner tooth gear teeth 77 engagement.
Circular-saw unit 4 comprises that framework 121, motor casing 122, handle 128, disk saw blade 123, saw cover 125 and safety head 126.Framework 121 is connected to inclination support arm 84 by inclination supporting pin 85.The spring (not shown) is inserted between framework 121 and the inclination support arm 84 and is used for to upper offset framework 121.Therefore, circular-saw unit 4 in its uppermost position in fig-ure as the resting position under the non-cutting operation situation.
The front side that motor casing 122 is arranged on framework 121 is used to hold the motor (not shown).Handle 128 is arranged on the peripheral surface and the front side of motor casing 122.The user catches handle 128 to move down circular-saw unit 4 to be used for cutting operation.Motor casing 122 rotatably supports the rotating shaft 124 that disk saw blade 123 is fixed to the upper with one heart.Saw covers 125 and is arranged for the first half that covers disk saw blade 123.Safety head 126 can pivot and support to saw movably and cover 125 and stretch out or withdraw to saw and cover 125, is used for selectively covering the latter half of disk saw blade 123.Arm 127 conducts are used for the pivot travel mechanism of safety head 126, and have an end that is connected to safety head 126.Arm 127 has the other end that is connected to arm support 86.That carries that handle 129 (Fig. 2) is arranged on framework 121 is used for manual feed mitre saw 1 near core.
As shown in Figure 1, digital display such as LCD 131 are set directly at above the regulon 41.As shown in figure 23, digital display 131 shows the angle anglec of rotation of panoramic table 21 with the speed of 0.2 degree, and shows the inclination angle of circular-saw unit 4 with the speed of 0.5 degree.Therefore, even the small angle anglec of rotation and inclination angle user also can accurately and easily discern.In addition, digital display 131 is arranged on the front side of mitre saw 1.Usually, cutting operation is carried out in the user front that is positioned at mitre saw.Therefore, the user can discern the angle of demonstration easily.
EEPROM143 is used for electricity and rewrites content.The signal that rotary angle encoder 144 is used for the optical pickocff 62 of the amount detection unit of spinning in the future 51 is converted into the signal that is used for microcomputer 142.Inclination angle encoder 145 is used for the signal from the optical pickocff 112 of tilt quantity detecting unit 101 is converted into the signal that is used for microcomputer 142.AC/DC converter 146 is used in the future, and the alternating current of automatic power supply is converted to direct current.Voltage-stablizer 147 is used for adjusting or stabilized power source.Battery case 132 and AC/DC converter 146 also all are connected to rotary angle encoder 144, inclination angle encoder 145 and digital display 131 and are used to provide electric power.Be controlled to be so that main power source implements to cut out by AC/DC converter 146 if electric power provides, then the electric power from battery case 132 supplies to these elements 144,145 and 131.On the other hand, if main power source is implemented to open, then come the electric power of automatic power supply to supply to these elements 144,145 and 131.By way of parenthesis, do not supply to motor element such as motor (not shown), be used to microcomputer 142, rotary angle encoder 144, the inclination angle encoder 145 controlling and measure and only supply to from the electric power of battery case 132.
Be used to reset panoramic table 21 the angle rotation (Miter reset switch) anglec of rotation reset switch 148, the sloping portion 74 that is used to reset the angle of inclination inclination angle reset switch 149 and be used for illumination digital display 131 backlight switch 150 backlight and also all be connected to microcomputer 142.Digital display 131 is used for showing the result of calculation of carrying out at microcomputer 142 according to from the output of optical pickocff 62,112.
The cutting operation that carries out with mitre saw 1 will be described below.At first, workpiece is fixed on the upper surface of pedestal 11, promotes workpiece simultaneously to the abutment surface of protective plate 12.Then, circular-saw unit 4 moves down by the handle 128 that pulling is used to cut.For cutting, angled cutting means that the abutment surface of the relative protective plate 12 of cut surface has a certain degree, or inclined cut means that the upper surface of the relative pedestal 11 of cut surface tilts.For these cuttings, carry out follow procedure.
If workpiece cuts with the angled cut surface of the abutment surface of relative protective plate 12, then panoramic table rotates for 21 one-tenth angledly.Because circular-saw unit 4 is positioned at above the panoramic table 21, then circular-saw unit 4 moves with panoramic table 21.Because protective plate 12 is fixed to pedestal 11, then watches from the top point of workpiece, the relative workpiece of the side surface of disk saw blade 123 is angled.This cut mode is called " angled cut mode ".
In the angle cut mode, cutting angle can be determined by the effect of one of part 26B protruding upward and locking slot 16a.For this effect, panoramic table 21 rotates angledly, does not push check lock lever 26 simultaneously downwards.Then, part 26B protruding upward is with required angle and required locking slot 16a effect.Adopt this state, fixed handle is tightened till fixed handle 43 does not rotate, so the end of fixed handle 43 compresses the arch section 16 of pedestal 11.Therefore, panoramic table 21 is fixed to pedestal 11.At this state, the angle anglec of rotation of panoramic table 21 relative pedestals 11 is accurately determined by the effect between locking slot 16a and the part 26B protruding upward.Therefore, do not need meticulous adjusting to the rotation of the angle of panoramic table 21.
For the required angle initialization cutting angle of the predetermined angle skew that limits from locking slot 16a, by the downward pressing part 26A that depresses check lock lever 26.In addition, as shown in figure 25, check lock lever steady pin 49 is by the space of compressing into framework 42, so that colulus 26C and annular holddown groove 49a effect.By this effect, even part 26B protruding upward and locking slot 16a perpendicular alignmnet also can prevent the effect of one of part 26B protruding upward and locking slot 16a.Therefore, can set the angle anglec of rotation of panoramic table 21 in required angle.After colulus 26C and annular holddown groove 49a effect, panoramic table 21 rotates to the position near required angle angledly.In the mitre saw 1 according to first embodiment, the angle anglec of rotation can show with per 0.2 degree.Therefore, the required angle position of rotation of panoramic table 21 can not be by promptly fixed handle 43 and mobile fixed handle 43 are provided with easily.Therefore, in the present embodiment,, carry out meticulous adjusting then so that required angle accurately to be provided when panoramic table 21 rotates near behind the position of required angle angledly.
More particularly, as shown in figure 26, the regulon 41 that is arranged on panoramic table 21 is positioned at the required angle of the arch section 16 that is oppositely arranged on pedestal 11.In this state, the end portion of fixed handle 43 is separated with the peripheral surface of arch section 16, and in addition, workbench contact 45 is by the bias force and rear wall 48 adjacency of spring 46.This position of workbench contact 45 is called the off-position.
Then, in Figure 27, fixed handle 43 around the rotation of its axis so that the end of fixed handle 43 is compressed arch section 16.Therefore, because the threaded function of the negative thread of the pin thread of fixed handle 43 and part 45, workbench contact 45 moves to adjusting position or temporary fixed position away from rear wall 48.In the case, fixed handle 43 plays the effect of pedestal abutment and fixed mechanism.In addition, because the reaction force of spring 46, workbench contact 45 is spaced apart with antetheca 47, and compresses arch section 16 with the fixed handle 43 of workbench contact 45 threaded function.With this understanding, the relative position between fixed handle 43, workbench contact 45 and arch section 16 is fixed.Yet workbench contact 45 directly is not fixed to framework 42, and just is supported in the framework 42 by spring 46.Therefore, as shown in figure 28, the relative position between framework 42 and the workbench contact 45 can change by regulating bolt 44 around its axis rotation.In other words, can meticulous adjusting framework 42 in the rotary direction of angle relative fixed handle 43 of panoramic table 21 and the position of workbench contact 45, because the end of fixed handle 43 contacts with the close of arch section 16, fixed handle 43 maintains static at rotary direction of angle always.Carry out in the length of the open front 42a of the rotary direction of angle that meticulous adjusting can be extended at the shaft portion 43A of fixed handle 43 as shown in figure 28.In the embodiment of explanation, spend setting according to the angle rotation amount plus-minus 2 of panoramic table 21 and be used for meticulous adjusting.
Under meticulous adjusting situation, because workbench contact 45 provides in the tangential threaded function that moves through the second negative thread 45b and regulate between the bolt 44.Therefore, except the rotatablely moving of button 44B, only produced very little amount of movement.This has also made things convenient for meticulous adjusting.
Like this, the position of rotation initial setting of panoramic table 21 relative pedestals 11, then, position of rotation is temporary fixed by regulating bolt 43.After this, meticulous adjusting is undertaken by button 44B.As a result, can be fast and accurately obtain the position of rotation that panoramic table 21 needs.
When panoramic table 21 rotated angledly, rotation amount detecting unit 51 moved relative to external gear teeth part 20.This amount of movement converts the rotation amount of first gear pair 56 that comprises the first gear 56A to.The anglec of rotation of first gear pair 56 is amplified at second gear pair 58 and 60 places, test section, so that 1 degree angle rotation of panoramic table 21 will produce 72 degree angle rotations of test section 60.Because discoid detection piece 60B is formed with 100 slits that are arranged in circumferencial direction, so 20 slits are represented 72 degree.In addition, detection piece 20B can make panoramic table 21 carry out the detection of the minimum angles rotation of 0.05 degree.
In addition, mitre saw 1 produces smear metal during cutting.Yet, comprise that the element of the detecting unit of first gear pair 56 and optical pickocff 62 is contained in the can 52, can prevent that smear metal from entering in the shell 52.As a result, can realize the accurate detection of the angle rotation of panoramic table 21.Therefore, when the angle of observation digital display 131 shows, can panoramic table 21 be moved to accurate angle position of rotation by handling adjusting bolt 44.
When meticulous be adjusted to the angle position of rotation of panoramic table 21 after, handle 43 further is fixedly clamped.As a result, spring 46 is compressed, as shown in figure 29, workbench contact 45 move to workbench contact 45 and antetheca 47 adjacency of protruding from framework 42 its be completely fixed the position.Under this state, owing to workbench contact 45 tightly is pressed against on the antetheca 47, so except the rotation of regulating bolt 44, the relative position between framework 42 and the workbench contact 45 does not change.Therefore, prevented the displacement of framework 42 relative arch sections 16.(arch section 16 is as a whole with 45 one-tenth of workbench contacts by fixed handle 43).The displacement of the relative pedestal 11 that interrelates with arch section 16 of the panoramic table that interrelates with framework 42 21 can not appear as a result.Therefore, can set the accurate angle position of rotation of panoramic table 21 fast, and the angle of setting can be kept for the angle cutting.
Like this, when contacting (in temporary fixed position) with pedestal 11, shaft portion 43A can carry out meticulous adjusting at fixed handle 43.Therefore, can prevent at meticulous conditioning period because pedestal 11 that impact or vibration cause and the unexpected displacement between the panoramic table 21.Like this, just increased precision at required rotary angle position location panoramic table 21.
Secondly, if the upper surface of the relative pedestal 11 of the cut surface on the workpiece tilts (after this abbreviating inclined cut as), then circular-saw unit 4 tilts as shown in Figure 4.As mentioned above, circular-saw unit 4 supports to sloping portion 74.Loosen clamp shaft 81 to discharge the adjacency between sliding wall 78 and the banking motion support 71, tilt so that allow the motion of sloping portion 74 relative tilts to support 71.Therefore, because the weight of himself, circular-saw unit 4 becomes inclination.Adopt this state, the upper surface of the relative workpiece in side of disk saw blade 123 tilts.
When carrying out inclined cut with required angle of inclination, circular-saw unit 4 remains on its required well azimuth (Figure 30) by operator's hand.Then, rotation adjusting knob 94 is around the movable inclined pivotally gradually part 74 of the axis of pin bolt 76.
By the pivoting action of sloping portion 74, tilt quantity detecting unit 101 moves relative to the arc inner tooth gear teeth 77.The amount of movement of unit 101 converts the rotation amount of the first gear 106A of first gear pair 106 to.The anglec of rotation of the first gear 106A is amplified at second gear pair 108 and 110 places, test section, so that the 1 degree pivot anglec of rotation of sloping portion 74 will produce 72 degree angle rotations of test section 110.Because discoid detection piece 110B is formed with 100 slits that are arranged in circumferencial direction, so 20 slits are represented 72 degree.In addition, detection piece 110B can make sloping portion 74 carry out the detection of the minimum angles rotation of 0.05 degree.
In addition, mitre saw 1 produces smear metal during cutting.Yet, comprise that the detecting unit element 101 of first gear pair 106 and optical pickocff 112 is contained in the can 102, can prevent that smear metal from entering in the shell 102.As a result, can realize the accurate detection of the pivot anglec of rotation of sloping portion 74.Therefore, when the angle of observation digital display 131 showed, sloping portion 74 can pivot and move to accurately pivot position.
When meticulous be adjusted to the pivot position of sloping portion 74 after, clamp shaft 81 supports 71 by clamping bar 82 rotation so that sloping portion 74 is fixed to banking motion.As a result, can set the accurate well azimuth of circular-saw unit 4 fast, and the orientation that can keep setting is used for carrying out inclined cut with required angle of inclination.
Secondly, with the control program that is used under cutting of explanation angle and the inclined cut situation in the angle demonstration of digital display 131.The detection of the angle rotation amount and the pivot anglec of rotation can realize by the electric power of being supplied with by battery case 132.
When battery is put in the battery case 132, begin control shown in Figure 31.Then, the angle anglec of rotation (Miter) and inclination angle (Bevel) that remains among the RAM is set at zero (S1).RAM is the memory that is contained in the microcomputer 142.Then, program advances to the value of counting in the optical pulse at optical pickocff 62 and 112 places and is set at zero S2.
Then, microcomputer 142 detects (S03) for the connection of AC power supplies.If AC power supplies does not also connect (S03: not), then program proceeds to S7, stop to show at this electric power that supplies to digital display 131 with stop angle, and if backlight switch 150 opened be used to shine backlight, then backlight closing, program changes S08 over to then.On the other hand, connect (S03: be) if determine AC power supplies, then program advances to the S04 and the program that show predetermined angular (more than " 0 " degree) and changes S05 over to.In S05, make the judgement whether backlight switch 150 has opened.If backlight switch 150 has been opened (S05: be), backlight open (S06) then, then, program enters S08.(S05: not), then program proceeds to S08 if backlight switch 150 is not also opened.
In S08, the existence of detection optical sensor 112 places optical pulse.Do not have optical pulse to detect (S05: deny) and do not mean that the test section 110 that is formed with slit 110C does not rotate, it is mobile that it means that sloping portion 74 does not pivot, and therefore, circular-saw unit 4 does not tilt.Therefore, program is jumped into the angle anglec of rotation trace routine that begins from S17, ignores the follow-up angle of inclination trace routine from S09 to S16 simultaneously.On the other hand, if detect optical pulse (S08: be), then program enters S09.
In S09, detect the incline direction of circular-saw unit 4.If circular-saw unit 4 is seen from the front of mitre saw 1 and is tilted to the left, that is to say that (S09: not), then program enters the S11 of increase corresponding to the umber of pulse at angle of inclination if 71 pivot rotations are in the counterclockwise direction supported in the motion of sloping portion 74 relative tilts.Then, program enters the S12 that calculates the angle on digital display 131 to be shown.On the other hand, if circular-saw unit 4 is seen from the front of mitre saw 1 and is tilted to the right, that is to say that if 71 pivot rotations (S09: be) are in the clockwise direction supported in the motion of sloping portion 74 relative tilts, then program enters the S10 of minimizing corresponding to the umber of pulse at angle of inclination.Then, program enters the S12 that calculates the angle on digital display 131 to be shown.More particularly, be stored in relatively in this way that angle among the RAM increases at every turn or reduce 0.05 degree so that equal the angle of inclination of 1 degree in the detection of 20 pulses of discoid detection piece 110B.After the angles of display among the S12 calculated, program entered angles of display and stores the into S13 of RAM.
Then, in S14, make the judgement whether inclination angle reset switch 149 is opened.Inclination angle reset switch 149 is used for the angle of inclination, and to reach S13 be zero reset.(S14: not), then program enters S17 so that beginning angle anglec of rotation display routine if inclination angle reset switch 149 is not opened.On the other hand, if inclination angle reset switch 149 is opened (S14: be), then program enters the optical pulse count value and is set at zero S15, and then, the value that is stored in S16 among the RAM is clearly zero.Then, program enters S17.
S17 belongs to the process of the angle rotation amount demonstration that is used for panoramic table 21 to S25.In S17, the existence of the optical pulse at detection optical sensor 62 places.(S17 :) do not mean the not rotation of test section 60 that is formed with slit 60C, this just means that panoramic table 21 does not have to rotate angledly not detect optical pulse.Therefore, program turns back to S03, ignore follow-up from S18 to S25 angle rotation amount display routine.On the other hand, if detect optical pulse (S17: be), then program enters S18.
In S18, detect the rotary direction of angle of panoramic table 21.Be rotated counterclockwise (S18: deny) if panoramic table 21 is seen from the end face of mitre saw 1, then program enters the S20 of minimizing corresponding to the umber of pulse of rotation amount.Then, program enters the S21 that calculates the anglec of rotation on digital display 131 to be shown.On the other hand, if panoramic table 21 is seen turn clockwise (S18: be) from the end face of mitre saw 1, then program enters the S19 of increase corresponding to the umber of pulse of rotation amount.Then, program enters the S21 that calculates the anglec of rotation on digital display 131 to be shown.More particularly, be stored in relatively in this way that angle among the RAM increases at every turn or reduce 0.05 degree so that equal the anglec of rotation of 1 degree in the detection of 20 pulses of discoid detection piece 110B.After the angles of display among the S12 calculated, program entered angles of display and stores the into S22 of RAM.
Then, in S23, make the judgement whether anglec of rotation reset switch 148 is opened.Anglec of rotation reset switch 148 is used for the anglec of rotation, and to reach S22 be zero reset.(S23: not), then program enters S03 so that repeat above-mentioned program of carrying out if anglec of rotation reset switch 148 is not opened.On the other hand, if anglec of rotation reset switch 148 is opened (S23: be), then program enters the optical pulse count value and is set at zero S24, and then, the value that is stored in S25 among the RAM is clearly zero.Then, program enters S03 to repeat above-mentioned program of carrying out.
In some cases, the process that is used for anglec of rotation display routine from S17 to S25 was carried out before the process that is used for pivot anglec of rotation display routine from S08 to S16.In addition, step S08 subsequently can almost carry out by multitasking to S25 simultaneously to S16 and other subsequent step S07.
As long as from battery case 132 supply capabilities, can not carry out above-mentioned processing even do not connect main AC power supplies always yet, therefore, can discern the angle rotation amount of panoramic table 21 and the angle of inclination of circular-saw unit 4 always.That is to say, can keep those angles in the previous cutting operation.In other words, stand good in ensuing cutting operation, then when AC power supplies connects, can operate mitre saw 1 fast and without the initial adjustment at the anglec of rotation and angle of inclination if be used for these angles of previous cutting operation.In addition, relevant from the power level of battery case 132 supplies with the power supply storage capacity of battery the battery case 132.If storage capacity exhausts, then will stop power supply and supply with.For fear of this problem occurring, when AC power supplies connects, implement control and supply with, and startup is supplied with control circuit from the power supply of AC power supplies to close from the power supply of battery case 132.This control can also realize restarting the operation of supplying with from the power supply of battery case 132 if AC power supplies disconnects.
Mitre saw according to the present invention is not limited to above-mentioned embodiment, but the various improved procedures that it is contemplated that.
Figure 32 has shown first improved procedure that is used for regulon 41, and wherein same part and element are represented with same label, and its feature is presented in the previous embodiment.In first improved procedure, a spring 152 is inserted between workbench contact 151 (corresponding to workbench contact 45) and the antetheca 47, rather than two springs 46.This improved procedure can reduce element or the part number that constitutes this regulon 41.
Second improvement is relevant with the regulon shown in Figure 33 to 35.The arch section 16 of pedestal has the lower surface in its outer circumferential sides, and lower surface is formed with prone gear teeth 153.The framework 154 of panoramic table is provided with the support section 154A that from then on extends downwards, and the negative thread that forward/backward is extended is formed among the support section 154A.The shaft portion 43A of fixed handle 43 and negative thread threaded function.By rotating fixed handle 43 in a direction around its axis, the end of fixed handle 43 and arch section 16 adjacency are so that the position of relative arch section 16 fixed frames 154.
Regulating part 155 is arranged on above the shaft portion 43A, and on support section 154A.Spring 156 is arranged on above the shaft portion 43A, and is inserted between the front surface of support section 154A and the regulating part 155 and is used for promoting forward regulating part 155.Regulating part 155 has the rear end, and described rear end integral body is provided with the gear 155A with gear teeth 153 engagement.Regulating part 155 has the rear end that integral body is provided with button 155B.
Below the position of rotation that utilizes regulating part 155 meticulous adjusting panoramic tables 21 will be described.After the panoramic table 21 with framework 154 rotated near the position of being scheduled to the anglec of rotation, regulating part 155 was pressed backward to allow gear 155A and gear teeth 153 engagement.When keeping this engagement, knob 155B to carry out meticulous control, then, tightens fixed handle 43 around its axis rotation, so that the position of framework 154 relative arch sections 16 is fixed on the required position of rotation of panoramic table 21.
Because the engagement between gear 155A and the gear teeth 153, unless regulating part 155 rotations, panoramic table 21 relative pedestals 11 do not have the angle rotation.In addition, because the gear of gear 155A and gear teeth 153 is smaller, so except several rotations of regulating part 155, the angle rotation amount of panoramic table 21 can be little.This has just made things convenient for meticulous adjusting.
Be used for the 3rd improved procedure at meticulous adjusting angle of inclination below with reference to Figure 36 explanation, wherein represent with same label with same part shown in Figure 180 and element.Spring 164 is inserted between meticulous adjusting knob 163 and the clamping bar 161, is used for normally promoting meticulous adjusting knob 163 backward by separator 162, is promoted so that the sliding wall of sloping portion 74 78 supports 71 to banking motion.Therefore, between sliding wall 78 and banking motion support 71, produce frictional force.
If when loosening clamping bar 161,78 pairs of banking motions of sliding wall support 71 close contact release, then because its deadweight, circular-saw unit 4 is subjected to promoting mobile to tilt, yet, since deadweight cause this tilt to move may since still the bias force by spring 164 be applied to the frictional force that sliding wall 78 and banking motion support between 71 and be restricted.
In addition, meticulous adjusting knob 163 rotates freely because the bias force of spring 164 is applied on the knob 163 and is restricted.Therefore, because sloping portion 74 is connected to meticulous adjusting knob 163 by rotating shaft 93, so the banking motion of sloping portion 74 also is restricted.Therefore, since the banking motion of the circular-saw unit 4 that himself weight causes may be restricted.This just mean not need meticulous be adjusted to the angle of inclination of circular-saw unit 4 during, the hand by the user supports circular-saw unit 4 with the orientation of regulation with hand.Like this, convenient meticulous adjusting operation.
The 4th improved procedure that is used for meticulous adjusting angle of inclination below with reference to Figure 37 and 38 explanations.Axle support 169 is rotatably supported in the peripheral side of the panoramic table of sloping portion 74 lower positions.Meticulous regulating shaft 167 has an end that is connected to axle support 169, so that meticulous regulating shaft 167 pivots mobile around the axis of axle support 169.Meticulous regulating shaft 167 has the mid portion that is formed with selectively with the worm screw 166 of arc gear wheel tooth 92 effects.Meticulous regulating shaft 167 has and the meticulous adjusting knob 168 whole free ends that are provided with.Link stopper 170 extends so that limit the pivoting action of meticulous regulating shaft 167 in the direction away from arc gear wheel tooth 92 from the outside of panoramic table.
Generally, as shown in figure 37, meticulous regulating shaft 167 and link stopper 170 adjacency are so that worm screw 166 separates with arc gear wheel tooth 92.As shown in figure 38, when circular-saw unit 4 moves to obliquely near behind the position of position, required angle of inclination, if circular-saw unit 4 will move to required position, angle of inclination obliquely, then meticulous regulating shaft 167 moves pivotally to arc gear wheel tooth 92, so that worm screw 166 and 92 effects of arc gear wheel tooth.By this effect, can keep the well azimuth of circular-saw unit 4.Then, meticulous adjusting knob 168 is around its axis rotation, so that arc gear wheel tooth 92 moves around the axis of pivot bolt 76.The motion of arc gear wheel tooth 92 means the axis banking motion of sloping portion 74 around pivot bolt 76.Therefore, meticulous adjusting can be passed through in the angle of inclination of disk saw blade 123.Then, clamping bar 82 is tightened with constant tilt angle stably.
The 5th improved procedure that is used for meticulous adjusting angle of inclination below with reference to Figure 39 explanation.Arc extends slit 171 and forms longlyer than prolonging slit 79, so that sloping portion 74 can be in clockwise and counterclockwise both direction about 45 angles of spending that tilt.Therefore, circular-saw unit 4 can be at about 45 degree and about 45 degree that are tilted to the left of being tilted to the right.
The 6th improved procedure that is used for meticulous adjusting angle of inclination below with reference to Figure 40 explanation.According to this improved procedure, arc extension slit 171 ' locate along the peripheral edge of sloping portion 74.
Figure 41 and 42 has shown the 7th embodiment that is used for the tilt quantity detecting unit.Tilt quantity detecting unit 172 is included in wherein the shell 172A of supporting rotating shaft 174 rotatably and 178.Axle support 179 is connected to shell 172A and is used for rotatably supporting rotating shaft 176.
First gear pair 173, second gear pair 175 and test section 177 are coaxial respectively to be fixed on the axle 174,176,178.Geometrical relationship between the rotating shaft 174,176,178 is to be assumed to be leg-of-mutton baseline so that straight line connects rotating shaft 174 and 178, and rotating shaft 176 is in vertex of a triangle.Axle supports 179 and is moving perpendicular to the straight line that connects rotating shaft 174 and 178 with perpendicular to the direction of the rotating shaft 176 shown in arrow A 1 and the A2.In addition, axle supports 179 and can be fixed to shell 172A by bolt 180.Optical pickocff 180 is arranged on the next door of test section 177.
In order to assemble, axle supports 179 in A1 direction (connecting rotating shaft 174 and 178 to straight line) promotion, so that keep the engagement of second gear pair 175 and first gear pair 173 and test section 177.Then, tight a bolt 180 so that axle support 179 is fixed to shell 172A.Adopt this setting, vibration between first gear pair 173, second gear pair 175 and test section 177, can not occur.Therefore, can obtain to respond the accurate rotation amount of the test section 177 of first gear pair, 173 rotations, thereby increase the accuracy of detection of optical pickocff 180.Improved procedure can be the 7th improved procedure, is not fixed to shell 172A so that axle supports 179, and biasing member such as spring are provided for supporting 179 at A1 direction bias axis.
Figure 43 has shown the 8th embodiment that is used for the tilt quantity detecting unit.According to this improved procedure, can omit the spring 105 in the tilt quantity detecting unit 101 (Figure 19).Tilt quantity detecting unit 101 moves around the axis pivot of pin 113, so that the engagement of the first gear 106A and the arc inner tooth gear teeth 77.Then, the 114 not vibrations that tight a bolt to keep engagement.Therefore, the position of the tilt quantity detecting unit 101 arc inner tooth gear teeth 77 relatively is fixing, supports 71 angle of inclination thereby accurately detect the motion of sloping portion 74 relative tilts.
The improved procedure that below explanation is used for the tilt quantity detecting unit.The motor (not shown) of low output and low power consumption is connected to the rotating shaft 111 or 178 of test section 110 or 177 drivingly, so that positive rotation power is applied to axle 111 or 178.By revolving force, rotating shaft 107,109 or 174,176 is pushed into rotation.Yet, since first gear 106 or 173 with the arc inner tooth gear teeth 77 effect, and owing to the rotation torque of motor is too little, so test section, first gear pair and second gear pair do not rotate.Yet, owing to pass through the effect of the revolving force of motor, vibration can not appear between the zone of action.In addition, even occur relative motion by the banking motion of sloping portion 74 between the arc inner tooth gear teeth 77 and tilt quantity detecting unit 101, because the output of motor is too little, motor can not influence relative motion yet.In addition, owing to use the motor of low power consumption, so, also can use power to be used for excited electric motor, even do not connect main power source from battery case 132.
Above-mentioned improved procedure for the tilt quantity detecting unit also is applicable to rotation amount detecting unit 51.In addition, in above-mentioned improved procedure, gear is used for rotation is delivered to the test section.At this, can use friction pulley rather than gear to be used for amplifying and transmitting rotation.
Figure 44 has shown the 9th embodiment that is used for control circuit.In control circuit shown in Figure 24, battery case 132 is provided for the rotation amount of continuous measurement panoramic table 21 and the tilt quantity of circular-saw unit 4.Yet, in control circuit shown in Figure 44, do not need battery case 132.Under latter event, if when AC power supplies disconnects, panoramic table 21 is rotated by angle or circular-saw unit 4 is tilted mobilely, and then the calculating of this angle can not be carried out in microcomputer 142.Even after this AC power supplies is connecting, rotation amount and tilt quantity are not known yet.For fear of this problem, may be displayed on the digital display 131 for the notice of resetting of zero necessity.After panoramic table 21 is set at the zero degree position, and after the notice of circular-saw unit 4 response displays 131 is set at the zero degree position, push the anglec of rotation (Miter) reset switch 148 and inclination angle (Bevel) reset switch 149 is used for initialization.Then, panoramic table rotates or circular-saw unit 4 moves obliquely angledly.
In addition, the position that is provided with of battery case 132 is not limited in the semicircle recess 24, and can be arranged on the lower surface of pedestal 11.
Shown in Figure 45 is the tenth improved procedure.In the mitre saw 1 according to previous embodiment, support section 3 moves pivotally to extend and can pivot from base part 2 and supports circular-saw unit 189 movably.At mitre saw 181, inclination support section 184 integrally extends from panoramic table 183.Support section 185 corresponding to support section 3 comprises fixator part 186, slipper 187 and saw unit supports part 188.
Saw unit supports part 188 is arranged on the front end of guide post.Circular-saw unit 189 can pivot by supporting pin 189 and support saw unit supports part 188 movably.Therefore, by the sliding motion of slipper 187 relative fixed device parts 186, circular-saw unit 189 moves in the direction of forward/backward at pedestal 182 and the position above the panoramic table 183.In this mitre saw 181, the banking motion of the angle of panoramic table 183 rotation and circular-saw unit 189 can be to carry out with the same mode of previous embodiment.
According to this embodiment, owing to circular-saw unit 189 moves in the direction of forward/backward, so, can cut the workpiece that has large-size in forward/backward direction.
Figure 48 has shown the 11 improvement mode that is used for the meticulous governor motion 241 of the anglec of rotation of the angle position of rotation that is used for meticulous adjusting panoramic table.The meticulous governor motion of the anglec of rotation comprises agency part 253, knob 255 and pinion 255A.Agency part 253 is the form of tooth bar, and is arranged on the lower surface of pedestal 211, and extends along the direction of rotation of panoramic table 221.Agency part 253 and pedestal 211 whole settings.Knob 255 supports to the framework 242 of panoramic table 221 rotationally by bearing 243A.Knob 255 comprises internal bevel gear 255C and outer knob part 255B.
Figure 49 and 50 has shown the 12 improved procedure of the meticulous governor motion 341 of the anglec of rotation of the angle position of rotation that is used for meticulous adjusting panoramic table.In according to the meticulous governor motion of the first embodiment angle anglec of rotation, pinion 25 and knob portion 24B rotatably support to the framework 23 of panoramic table 21, and agency part 11B is positioned at the outer peripheral end part of pedestal 11.The same with meticulous governor motion shown in Figure 48, pinion 255A and knob 255 rotatably support to the framework 242 of panoramic table 221, and agency part 253 is positioned at the outer peripheral end part of pedestal 211.
Yet according to the 12 improved procedure shown in Figure 49 and 50, pinion 355A and knob 355B can rotatably support to pedestal 311, and arc agency part 353 can be formed at the following outer peripheral end part of panoramic table 321.That is to say that arc agency part 353 extends at the circumferencial direction of panoramic table 321.
More particularly, in Figure 49, pedestal 311 has and is provided with the pinion shaft support section 311A that is used for rotatably supporting pinion shaft 355.Pinion shaft 355 has an end that is provided with pinion 355A and the other end that is provided with knob 355B.Agency part 353 integrally is provided with panoramic table 321.Pinion 355A and agency part 353 continuous engagement.When knob 355B rotated, pinion 355A and pinion shaft 355 integrally rotated.Therefore, the relative as shown in figure 50 pedestal 311 of panoramic table 321 is around its axis rotation.Therefore, the angle anglec of rotation of meticulous control panoramic table 321 can be undertaken by the rotation of knob 355B.Otherwise, the angle rotation rotation synchronously of knob 355B and panoramic table 321.In other words, to meticulous adjusting, it is unwanted temporarily anchoring to panoramic table 321.
The meticulous governor motion 241,341 that is used for the anglec of rotation of meticulous adjusting panoramic table 321 among the above-mentioned Figure 48 to 50 of being presented at can be combined into mitre saw shown in Figure 45, wherein fixator 186 has slide-and-guide part 186A, and it is removable in the forward/backward direction of mitre saw 181 that it is used to be slidably supported slipper 187.
In addition, based on above-mentioned relatively improved procedure, can predict to have various compound modes.In addition, various improved procedures also can be implemented on the mitre saw 181 of sliding-type.
Claims (22)
1. mitre saw comprises:
Supporting workpiece pedestal thereon;
Be supported on the panoramic table that also relative pedestal rotates around rotating shaft on the pedestal;
Rotatably support the circular-saw unit of disk saw blade;
Being set to panoramic table and the position on panoramic table can pivot and support the support section of circular-saw unit movably;
Be arranged between pedestal and the panoramic table and be set to the anglec of rotation of the relative pedestal of panoramic table is carried out the governor motion of meticulous adjusting.
2. mitre saw according to claim 1 also comprises:
Detect the rotation amount detecting unit of the rotation amount of the relative pedestal of panoramic table; And
The digital display that shows the anglec of rotation that detects by anglec of rotation detecting unit.
3. mitre saw according to claim 2 is characterized in that:
Panoramic table comprises having the circular table part that support section is supported to the front-end and back-end on it, and the neck platform part of extending forward from described front end in the diametric(al) of circular table part, and described digital display is set at the neck platform and partly locates.
4. mitre saw according to claim 1 is characterized in that governor motion comprises:
Actuating member with the pedestal effect; And
Moving member, it is used for providing as the time spent when actuating member and pedestal the relative motion of the relative panoramic table of actuating member.
5. mitre saw according to claim 4 is characterized in that governor motion also comprises the biasing member that interrelates with panoramic table; And
Wherein said actuating member comprises:
The workbench contact, it can move along the radial direction of panoramic table and can move along the tangential direction of the described direction of rotation of panoramic table, described tangential direction is perpendicular to radial direction, described biasing member is inserted between panoramic table and the workbench contact, described workbench contact is formed with at first negative thread that extends towards the radial direction of pedestal and second negative thread that extends in described tangential direction, and described workbench contact supports between the primary importance of panoramic table and workbench contact and the second place that panoramic table directly contacts removable along described radial direction at the workbench contact by biasing member; And
The pedestal contact, its towards with removable away from the radial direction of pedestal and with the first negative thread threaded function, be used for optionally moving described workbench contact to one of primary importance and second place, described moving member around its axis rotation and axially do not support to described panoramic table movably and with the second negative thread threaded function.
6. mitre saw according to claim 5 is characterized in that:
When pedestal contact and pedestal disengage when being used to allow panoramic table freely to rotate, described workbench contact also can radially move to the 3rd position, described primary importance moves to carry out the anglec of rotation of meticulous adjusting panoramic table in described tangential direction as the workbench contact, the pedestal contact is with the temporary fixed position of first pressure and pedestal adjacency simultaneously, and the second place is as the rotation that prevents panoramic table fully, and the pedestal contact is with the position that is completely fixed of second pressure that is higher than first pressure and pedestal adjacency simultaneously.
7. mitre saw according to claim 1 is characterized in that:
Pedestal is formed with gear teeth in the position near governor motion; And
Wherein actuating member have gear and the primary importance of gear and gear teeth engagement and gear breaks away from and the second place of gear teeth engagement between removable along the radial direction of described panoramic table; And
Wherein moving member rotatably supports to panoramic table and is connected to actuating member, and removable with actuating member, and described gear is rotated in the rotation of described moving member.
8. mitre saw according to claim 1 is characterized in that:
One of pedestal and panoramic table are formed with the locking receiving unit that limits the predetermined anglec of rotation of panoramic table, and
Wherein other one of pedestal and panoramic table is provided with and locks receiving unit and does in order to fixing panoramic table at the lock portion of being scheduled to the anglec of rotation; And
Mitre saw also comprise when lock portion be positioned near or with the locking receiving unit in the face of the time, prevent the anti-retaining mechanism of lock portion and locking receiving unit effect.
9. mitre saw according to claim 1 is characterized in that:
Pedestal is formed with at least one locking slot that is used to lock receiving unit; And
Wherein lock portion comprises having the elastic component that an end is fixed to panoramic table, and be arranged on the elastic component place and with the locking projection of described at least one locking slot effect; And
Wherein anti-retaining mechanism comprises:
Be used for along the downward pressing part of pushing elastic component away from the direction of at least one locking slot;
From the colulus of elastic component to described at least one locking slot extension; And
Have only downwards when downward pressing part is pushed and the colulus effect to prevent to lock the anti-part that is locked of projection and described at least one locking slot effect.
10. mitre saw according to claim 9 is characterized in that:
The rotation that downward pressing part is positioned at respect to panoramic table faces toward described support section along diametric opposite side.
11. mitre saw according to claim 1 is characterized in that support section comprises:
Have the lower end that supports to panoramic table and have the fixator part of the upper end that is provided with the slide-and-guide part;
Partly be slidably supported and be parallel to the slipper that extends for the direction of the straight line of the crossover location of panoramic table and disk saw blade by slide-and-guide, described slipper is removable in the direction of the extension of slipper, and circular-saw unit can pivot and supports on the slipper movably.
12. mitre saw according to claim 1 is characterized in that governor motion comprises:
First agency part that is arranged on the pedestal place and extends in the direction of rotation of panoramic table; And
Rotatably support to panoramic table and with second agency part of the first agency part effect, the rotation of described second agency part makes the relative pedestal of panoramic table carry out small angle and rotatablely moves.
13. mitre saw according to claim 12 is characterized in that:
Described second agency part and the described first agency part continuous action.
14. mitre saw according to claim 13 is characterized in that:
Described first agency part comprises arc-shaped rack, and described second agency part comprises the pinion with the arc-shaped rack effect.
15. mitre saw according to claim 1 is characterized in that governor motion comprises:
First agency part that is arranged on the pedestal place and extends in the direction of rotation of panoramic table; And
Rotatably support on the support and with second agency part of the first agency part effect, the rotation of described second agency part makes the relative pedestal of panoramic table carry out small angle and rotatablely moves.
16. mitre saw according to claim 15 is characterized in that:
Described second agency part and the described first agency part continuous action.
17. mitre saw according to claim 16 is characterized in that:
First agency part comprises arc-shaped rack, and second agency part comprises the pinion with the arc-shaped rack effect.
18. a mitre saw comprises:
Supporting workpiece pedestal thereon;
Be supported on the panoramic table that also relative pedestal rotates around rotation on the pedestal;
Rotatably support the circular-saw unit of disk saw blade;
Being set to position on the panoramic table and on panoramic table can pivot and support the support section of circular-saw unit movably;
Be arranged between pedestal and the panoramic table and be arranged to panoramic table is carried out with respect to the anglec of rotation of pedestal the governor motion of meticulous adjusting;
Be arranged on one of pedestal and panoramic table and go up and limit the locking receiving unit of the predetermined anglec of rotation of panoramic table; And
With locking receiving unit effect and be arranged on pedestal and panoramic table in all the other one go up with the lock portion of fixing described panoramic table in the predetermined anglec of rotation, do the time spent when lock portion breaks away from the locking receiving unit, described governor motion carries out meticulous adjusting to panoramic table with respect to the anglec of rotation of pedestal.
19. mitre saw according to claim 18 also comprises:
Detect the rotation amount detecting unit of panoramic table with respect to the rotation amount of the anglec of rotation of pedestal; And
The digital display that shows the anglec of rotation that detects by described rotation amount detecting unit.
20. mitre saw according to claim 18 also comprises:
When lock portion be positioned near or with the locking receiving unit in the face of the time, prevent lock portion and the anti-retaining mechanism of locking receiving unit effect, and
Wherein pedestal is formed with at least one locking slot as the locking receiving unit; And
Wherein lock portion comprises having the elastic component that an end is fixed to panoramic table, and be arranged on the elastic component place and with the locking projection of described at least one locking slot effect; And
Wherein said anti-retaining mechanism comprises:
Be used at the downward pressing part of pushing elastic component away from the direction of at least one locking slot;
From the colulus of elastic component at least one locking slot extension; And
Have only downwards when downward pressing part is pushed and the colulus effect to prevent to lock the anti-part that is locked of projection and at least one locking slot effect.
21. mitre saw according to claim 20 is characterized in that:
The rotation that described downward pressing part is positioned at respect to panoramic table faces toward described support section along diametric opposite side.
22. mitre saw according to claim 18 is characterized in that described support section comprises:
Have the lower end that supports to panoramic table and have the fixator part of the upper end that is provided with the slide-and-guide part;
Partly be slidably supported and be parallel to the slipper that extends for the direction of the straight line of the crossover location of panoramic table and disk saw blade by slide-and-guide, described slipper is removable at the bearing of trend of slipper, and circular-saw unit can pivot and supports to movably on the described slipper.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004194994 | 2004-06-30 | ||
| JP2004194994 | 2004-06-30 | ||
| JP2005002223 | 2005-01-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1714973A true CN1714973A (en) | 2006-01-04 |
| CN100462172C CN100462172C (en) | 2009-02-18 |
Family
ID=35821293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510081811XA Expired - Fee Related CN100462172C (en) | 2004-06-30 | 2005-06-30 | Miter saw having angle adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100462172C (en) |
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| WO2010045837A1 (en) * | 2008-10-24 | 2010-04-29 | 苏州宝时得电动工具有限公司 | Cutting machine |
| WO2010069257A1 (en) * | 2008-12-18 | 2010-06-24 | 苏州宝时得电动工具有限公司 | Oblique cutting saw |
| CN101239474B (en) * | 2007-02-09 | 2011-01-26 | 力山工业股份有限公司 | Electric device |
| CN102019460A (en) * | 2009-09-09 | 2011-04-20 | 利优比株式会社 | Electric cutting tool |
| CN102059723A (en) * | 2009-08-20 | 2011-05-18 | 株式会社牧田 | Mechanism for positioning cutting device body of bench-type cutting device at tilt angle |
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| CN101239474B (en) * | 2007-02-09 | 2011-01-26 | 力山工业股份有限公司 | Electric device |
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| CN103846968A (en) * | 2012-12-04 | 2014-06-11 | 力山工业股份有限公司 | Angle adjusting device of sawing machine |
| CN103934861A (en) * | 2013-01-21 | 2014-07-23 | 株式会社牧田 | Table-type cutting machine |
| CN103252656A (en) * | 2013-04-25 | 2013-08-21 | 上海锐奇工具股份有限公司 | Steel material cutter and locking method of knife head of steel material cutter |
| CN106735548A (en) * | 2015-11-20 | 2017-05-31 | 力山工业股份有限公司 | The buck positioner of sawing machine |
| CN106735548B (en) * | 2015-11-20 | 2019-03-22 | 劳氏公司 | The buck positioning device of sawing machine |
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| CN111113564A (en) * | 2018-10-30 | 2020-05-08 | 株式会社牧田 | Table type cutting machine |
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