Summary of the invention
The invention provides and a kind ofly need not to regulate separately the director element position and just can guarantee that director element do not deviate from the cutting machine cover assembly of saw blade.
For achieving the above object, technical scheme of the present invention is: a kind of cutting machine cover assembly comprises: boot main body, and for the saw blade of covering cutting machine partly, described saw blade comprises the working portion of cut workpiece and supports the body portion of described working portion; Support arm links to each other with the workbench of cutting machine, supports described boot main body in the workbench top; Pivotal arm links to each other with described boot main body, rotates around pivot with respect to support arm, thereby described boot main body is at least near the first operating position of workbench with away from the second operating position of workbench; And director element, be located at the described saw blade of guiding on the described boot main body; Described cover assembly also comprises the interlinked mechanism of being located between described support arm and the described boot main body, when the relatively described support arm of described pivotal arm pivots, described interlinked mechanism drives described boot main body and rotates with respect to described pivotal arm, when thereby described boot main body was in the first operating position and the second operating position, the body portion of described director element and saw blade kept in touch.
Compared with prior art, the present invention drives the boot main body arm that is pivoted relative to each other and rotates by interlinked mechanism is set, in the process that pivotal arm rotates, the auto-compensation boot main body is perpendicular to the displacement on the direction of support arm, thereby, when boot main body was positioned at the operating position, very little skew only occured with respect to the vertical range of support arm in the director element of being located on the boot main body, basically remains unchanged.In the process that cover assembly rotates, saw blade is directed to the element guiding all the time, and the operator need not regulate separately the position of director element again, and is simple to operation.
Preferably, described interlinked mechanism is link assembly.Link assembly is simple in structure, processing ease.
Described link assembly comprises the first connecting rod that is fixedly connected with described support arm, the second connecting rod pivotally connected with described boot main body, and described first connecting rod links to each other with described second connecting rod.Thus, boot main body, pivotal arm, first connecting rod and second connecting rod are common to consist of a quadric chain, thereby realizes in the certain limit micro-displacement of boot main body.
Described boot main body comprises the connecting portion that links to each other with second connecting rod, and described connecting portion is provided with stop surface, and the side of described second connecting rod and described stop surface offset, and described cover assembly reaches the extreme position of rotation.The side of stop surface and connecting rod against, can prevent the unconfined rotation of boot main body, cause the trouble of operation.
Described director element is rolling bearing, and the axis of described director element remains level in the process that described pivotal arm rotates.Rolling bearing is as director element, and symmetrical is located on the boot main body, and the guiding of roll mode is provided for saw blade.In the guiding process, produce rolling friction between saw blade and the rolling bearing, little to the damage on rolling bearing and saw blade surface.
The thickness of described rolling bearing is less than the width of saw blade.The width of saw blade is different because of the difference of cut workpiece, and the thickness of rolling bearing is little, can guarantee to contact with the body portion of saw blade and can not run into the working portion of saw blade, can not affect saw blade work.
Be connected with adjutage between described support arm and the described pivotal arm, described adjutage has first axle, and described support arm has the second axis, and first axle is vertical with the second axis.By adjutage is set, make the position of support arm setting that multiple variation can be arranged, both can be arranged on the workbench, also can be located on the bearing.According to the size of table surface, adjust the length of adjutage, can make boot main body just corresponding to the aperture position of workbench, make director element corresponding with the position of saw blade.
Described cover assembly comprises that also the guard shield retaining mechanism is fixed in preposition with described pivotal arm, and corresponding described boot main body also is fixed in preposition.Boot main body and pivotal arm move together, when cover assembly is in suitable operating position, need to be fixed up relatively in the position of boot main body, and the guard shield retaining mechanism is fixing, simple to operate together with pivotal arm and boot main body simultaneously.
Described guard shield retaining mechanism comprises the retaining ring that is sheathed on the adjutage, is located at the end cover body of pivotal arm end, and the clamping screw that connects described retaining ring and end cover body.
The present invention also provide a kind of have need not to regulate separately the director element position and just can guarantee that director element do not deviate from the cutting machine of the cover assembly of saw blade.
For achieving the above object, technical scheme of the present invention is: a kind of cutting machine comprises: have the workbench of opening, comprise the upper surface for supporting workpiece; Be fixed in the cutting mechanism of the lower surface of described workbench, comprise the motor that output rotatablely moves, drive the reciprocating reciprocating lever of saw blade that passes described opening, the rotary actuation of motor is converted to the reciprocating movement conversion mechanism of reciprocating lever; And aforementioned cover assembly.
The specific embodiment
Referring to accompanying drawing 1-3, a kind of cutting machine 20 comprises workbench 22, the bearing 24 of support table 22, be located at the cover assembly 30 on the workbench 22, adjustable Anchor plate kit 32 that workpiece is applied certain pressure that links to each other with cover assembly 30, and the cutting mechanism 26 of being located at workbench 22 lower surfaces 38.
According to the usual occupation mode of operator to this type of cutting machine, the left side is the front portion of cutting machine 20 among definition Fig. 1, and the right side is the rear portion of cutting machine 20.Workbench 22 has upper surface 36, lower surface 38 and with respect to upper and lower surperficial 36,38 vertically extending sidewalls 39.Opening 40 is opened on the workbench 22, is positioned at the front portion of cutting machine 20, is through to lower surface 38 from upper surface 36.Saw blade 28 passes opening 40 from bottom to top.Workpiece 34 can be placed on the upper surface 36 of workbench 22, moves through saw blade 28 along upper surface 36, thereby is cut by saw blade 28.The shape of opening 40 is essentially square.A square saw blade backplate 42 can embed opening 40, and the dust that prevents that is used for to a certain degree enters cutting machine 20 inside, and when the abnormal conditions such as saw blade 28 fractures occurring, backplate 42 can be removed, and the operator is by taking-up saw blade 28 in the opening 40.The centre of backplate 42 offers slit 43, and saw blade 28 can pass through from slit 43.
Also be provided with vertical T-slot 44 and horizontal T-slot 45 on the workbench 22.Vertical T-slot 44 extends to the rear portion of workbench 22 from the front portion of workbench 22.Horizontal T-slot 45 is positioned at the front side of opening 40, intersects with vertical T-slot 44, thereby the upper surface 36 of whole workbench has been divided into four parts.44 minutes other sidewalls from workbench 22 of horizontal T-slot 45 and vertical T-slot begin to extend, until another sidewall that opposing parallel arranges.Vertical T-slot 44 is identical with the shape of cross section of horizontal T-slot 45, can be used for being connected and fixed the jig (not shown).
Bearing 24 comprises the pedestal 87 with some feets 86 and has the main body 88 of supporting walls.Drawer 89 is located at the front portion of bearing 24, is used for collecting dust.The front support wall of main body 88 is provided with control panel 90, accommodates main switch 91 and the speed-regulating switch 92 of cutting machine.In the present embodiment, bearing 24 has supporting walls, it may occur to persons skilled in the art that, some supporting legs only is set also workbench 22 and cutting mechanism 26 can be supported.Therefore, the bearing among the present invention 24 also can be the support that is made of supporting leg.
Cutting mechanism 26 is fixed in the lower surface 38 of workbench 22 and is contained in the bearing 24, comprise the motor 93 that output rotatablely moves, the reciprocating lever 94 that the saw blade 28 of opening 40 moves back and forth is passed in drive, the rotary actuation of motor 93 is converted to the reciprocating movement conversion mechanism 95 of reciprocating lever 94; And the exercisable saw blade that saw blade 28 is clamped and released clamps relieving mechanism 96.Saw blade clamps relieving mechanism 96 and comprises the executive component 97 that is positioned on workbench 22 or the bearing 24.
Saw blade 28 comprises body portion 28a and the working portion 28b that is supported by body portion 28a.In the present embodiment, working portion 28b is the sawtooth that is crisscross arranged, and that is to say, a part of sawtooth is outstanding towards a side of saw blade, and another part sawtooth is outstanding towards another opposite flank of saw blade.Saw blade 28 also comprises the coupling part (not shown), can have connecting hole or connect crossette, is used for clamping relieving mechanism 96 with saw blade and matches.
Further 4-12 with reference to the accompanying drawings, cutting machine cover assembly 30 comprises the boot main body 46 for the saw blade 28 of the covering cutting machine of part, link to each other with the workbench 22 of cutting machine and support shield main body 46 in the support arm 62 of workbench 22 tops, link to each other with boot main body 46 and to rotate pivotal arm 48 with respect to support arm 62 around pivot, and the director element 77 etc. of being located at guiding saw blade 28 on the boot main body 46.Pivotal arm 48 rotates around pivot, thereby boot main body 46 can move near the first operating position of workbench 22 with between away from the second operating position of workbench 22 accordingly.When boot main body 46 was positioned at the first operating position, director element 77 contacted with the body portion 28a of saw blade 28, and the thickness of workpiece that saw blade 28 can cut is H.When boot main body was positioned at the second operating position, director element 77 kept in touch with the body portion 28a of saw blade 28, and the thickness of workpiece that saw blade 28 can cut is greater than H.Pivotal arm 48 further rotates, and boot main body 46 is away from saw blade 28, and at this moment, boot main body 46 no longer hides saw blade 28, and director element 77 contacts with the body portion 28a disengagement of saw blade 28, and the operator can carry out the replacing of saw blade.
In the present embodiment, support arm 62 is connected on the workbench 22 by screw is dismountable.Support arm 62 has the second axis X 2, the second axis X 2 perpendicular to workbench 22 table tops of cutting machine.Those skilled in the art also can know, support arm 62 can also adopt other mode to be connected with workbench 22.Such as, offer chute at workbench 22, corresponding arranges slide rail at support arm 62, and support arm 62 can be easy to slide and be coupled on the workbench 22.Certainly, also can directly support arm 62 be fixedly attached on the workbench 22.Be connected with adjutage 60 between support arm 62 and the pivotal arm 48, adjutage 60 has first axle X1, and first axle X1 is vertical with the second axis X 2.Have groove 61 on the support arm 62, adjutage 60 adopts circular tube structure, places the groove 61 on the support arm 62, by screw fastening.Adjutage 60 extends to the direction of another sidewall of workbench 22 from a sidewall of workbench 22.By adjutage 60 is set, can there be multiple variation the position that support arm 62 is arranged, both can be arranged on the workbench 22, also can be located on the bearing 24.According to the size of workbench 22 table tops, adjust the length of adjutage 60, can make boot main body 46 just corresponding to the position of the opening 40 of workbench 22, make director element 77 corresponding with the position of saw blade 28.
Pivotal arm 48 comprises pivot cover body 50 and left and right side plate 52 and 54.Pivot cover body 50 has the two ends of longitudinal extension, and wherein an end is perpendicular to vertically offering pivoting hole 51, and pivotal arm 48 is set on the adjutage 60 by pivoting hole 51, can pivot with respect to support arm 62.The other end of pivot cover body 50 comprises two flanks, is respectively equipped with rivet hole 53, and rivet 53a is fixedly connected with 54 left and right side plate 52 by rivet hole 53 with pivot cover body 50.Pivotal arm 48 and boot main body 46 are by 49 rotating connections of bearing pin.In the present embodiment, pin shaft hole 47 is set on the boot main body 46, corresponding side plate hole 52a and the 54a of arranging on the left and right side plate 52 and 54, bearing pin 49 is arranged in pin shaft hole 47 and side plate hole 52a and the 54a.Boot main body 46 can be rotated around bearing pin 49 with respect to pivotal arm 48.
Cover assembly 30 also comprises the interlinked mechanism 100 of being located between support arm 62 and the boot main body 46.When pivotal arm 48 relative support arms 62 pivot, interlinked mechanism 100 drives boot main body 46 and rotates with respect to pivotal arm 48, when thereby boot main body 46 was in the first operating position and the second operating position, director element 77 kept in touch with the body portion 28a of saw blade 28.Drive boot main body 46 arm 48 that is pivoted relative to each other and rotate by interlinked mechanism 100 is set, in the process that pivotal arm 48 rotates, auto-compensation boot main body 46 is perpendicular to the displacement on the direction of support arm 62, thereby, when boot main body 46 is positioned at the operating position, very little skew only occurs with respect to the vertical range of support arm 62 in the director element 77 of being located on the boot main body 46, basically remains unchanged.In the process that cover assembly 30 rotates, saw blade 28 is directed to element 77 guiding all the time, and the operator need not regulate separately the position of director element 77 again, and is simple to operation.In the present embodiment, interlinked mechanism 100 is link assemblies.Link assembly comprises the first connecting rod 56 that is fixedly connected with support arm 62, the second connecting rod 59 pivotally connected with boot main body 46, and first connecting rod 56 links to each other with second connecting rod 59.Thus, boot main body 46, pivotal arm 48, first connecting rod 56 and quadric chain of second connecting rod 59 common formations, thereby the micro-displacement of boot main body in the realization certain limit.Wherein, the position of first connecting rod 56 is relatively fixing, and for quadric chain provides two fixed pivots, pivotal arm 48 rotates, and correspondingly, second connecting rod 59 and boot main body 46 are also rotated thereupon.
First connecting rod 56 in the link assembly comprises large end 57 and small end 58.Wherein, hold greatly 57 to have large end axis X 3, small end 58 has small end axis X 4.Large end axis X 3 and small end axis X 4 are parallel to each other.Be provided with screw hole 98 perpendicular to large end axis X 3 on the outer wall of large end 57, adjutage 60 is provided with mounting hole 99, and screw passes mounting hole 99 and screw hole 98, and adjutage 60 is fixedly connected with first connecting rod 56.By mounting hole 99 is set, adjutage 60 is adjusted within the specific limits with respect to the position of pivotal arm 48.The large end 57 of first connecting rod 56 can be contained in adjutage 60 pipes, and small end 58 has connecting hole 58a.Trough of belt pin 101 passes the hole of connecting hole 58a and second connecting rod 59 1 ends, and first connecting rod 56 is linked to each other with second connecting rod 59.Extend prominent muscle 102 along the direction of relative small end 58 on large end 57 outer walls of first connecting rod 56, adjutage 60 ends offer accepting groove 103, first connecting rod 56 is contained in adjutage 60 when interior, prominent muscle 102 matches with accepting groove 103, restriction first connecting rod 56 rotates relative to adjutage 60, determines simultaneously the fixed position of first connecting rod 56.Pivot cover body 50 covers first connecting rod 56 outsides, is used for the fixing screw 104 of first connecting rod 56 and passes hole 105 on the pivot cover body 50.End cap 76 button is located at pivot cover body 50 outsides, passes large end connecting hole 57a by bolt 106 and nut 108 along the axis direction of adjutage, and first connecting rod 56 is fixedly connected with pivot cover body 50.It will be recognized by those skilled in the art that the specific constructive form of first connecting rod 56 and be not limited in the scheme that discloses in the present embodiment with the connected mode of pivotal arm 48, second connecting rod 59.Other connected mode, such as riveted joint, welding, perhaps the mode such as one-body molded all is feasible, the applicant is not described further at this.
In the present embodiment, second connecting rod 59 is elongated flat boards, and two ends have respectively connecting hole, with first connecting rod 56 and 46 rotating linking to each other of boot main body.
Boot main body 46 is used for partial coverage saw blade 28, and it comprises that saw blade hides part 109, hides the sweep-up pipe 55 that part 109 fluids are communicated with saw blade, and the connecting portion 110 that links to each other with second connecting rod 59.Establish sweep-up pipe 55 on the boot main body 46, be used for external dust catcher, the dust sucking-off that produces when saw blade is cut.Connecting portion 110 is provided with stop surface 112, and side 59a and the stop surface 112 of second connecting rod 59 offset, and cover assembly reaches the extreme position of rotation.The side of stop surface and connecting rod against, can prevent the unconfined rotation of boot main body, avoid causing the trouble of operation.Pin shaft hole 47 is located at saw blade and hides the part that part 109 links to each other with sweep-up pipe 55.Referring to accompanying drawing 13, boot main body 46 adopts the version of two semi-involutions, is comprised of the first cover body 46a and the second cover body 46b, and corresponding sweep-up pipe 55 is formed by two semicircular ring.What be provided with also on the boot main body 46 that Anchor plate kit host cavity 127 is used for part accommodates Anchor plate kit 32.Saw blade hides the below of part 109, is provided with the holder 113 of director element 77.Holder 113 is arranged on the second cover body 46b, comprises symmetrically arranged two installing holes 114.Trip bolt 78 passes installing hole 114 director element 77 is fixed on the holder 113.
In the present embodiment, director element 77 is two symmetrically arranged bearings.In the gap of saw blade 28 between two bearings.Thereby during saw blade 28 cutting work, bearing outside surface keeps contacting with the body portion 28b of saw blade 28.The director element 77 preferred rolling bearings that adopt, pivotal arm 48 is in the process that rotate different operating positions, and the axis X 5 of director element 77 remains level.Rolling bearing is as director element, and symmetrical is located on the boot main body 46, and the guiding of roll mode is provided for saw blade 28.In the guiding process, produce rolling friction between saw blade 28 and the rolling bearing, little to the damage on rolling bearing and saw blade surface.When the working portion 28a of saw blade was the sawtooth that interlocks, director element 77 can not contact with working portion 28a, otherwise can be with the surface incised wound of director element 77 during saw blade 28 cutting work.Therefore, director element 77 will guarantee that with the relative position that saw blade 28 is installed director element 77 does not contact and contacts with body portion 28b with working portion 28a.The thickness of rolling bearing is less than the width of saw blade.The width of saw blade 28 is different because of the difference of cut workpiece, and the thickness of rolling bearing is little, and the outer surface that can guarantee bearing contacts with the body portion 28b of saw blade and can not meet the working portion 28a of saw blade, can not affect saw blade work.Those skilled in the art as can be known, director element can also adopt other version.Such as, guide pad.Adopted a secondary rolling bearing in the present embodiment, same, the quantity of director element also can be adjusted as required, such as can be only with a guide pad, and perhaps director element or more director elements of two secondary intervals settings.
Cover assembly 30 comprises that also guard shield retaining mechanism 63 is fixed in preposition with pivotal arm 48, and corresponding boot main body 46 also is fixed in preposition.Boot main body 46 and pivotal arm 48 move together, when cover assembly 30 is in suitable operating position, need to be fixed up relatively in the position of boot main body 46, and guard shield retaining mechanism 63 is fixing, simple to operate together with pivotal arm 48 and boot main body 46 simultaneously.In the present embodiment, guard shield retaining mechanism 63 comprises the retaining ring 66 that is sheathed on the adjutage 60, is located at the end cover body 64 of pivotal arm 48 ends, and the clamping screw 68 that connects retaining ring and end cover body.Wherein, retaining ring 66 comprises two the locking arm 66a of the locking hole 66c with coaxial setting, and the crossbeam 66b that connects two locking arm 66a.Offer perforation 66d on the crossbeam 66b, when retaining ring 66 was sheathed on the adjutage 60 by locking hole 66c, perforation 66d was towards the end of pivot cover body 50.End cover body 64 button is located at the end of pivot cover body 50, and clamping screw 68 passes perforation 66d on the retaining ring 66 and the hole on the end cover body 64, connects fastening pivot cover body 50 with the locking nut 70 that is fixedly connected with locking button 72.When pivot cover body 50 turned to the precalculated position around adjutage 60, rotational lock button 72 can be with retaining ring 66 and end cover body 64 relative furthering, thereby stationary pivot cover body 50 is in this precalculated position.Correspondingly, opposite spin locking button 72 pivot cover body 46 can be unclamped, thereby pivot cover body 46 can rotate relative to adjutage 60 and support arm 62.
Referring to accompanying drawing 5-8, cover assembly 30 can be in several turned positions with respect to workbench 22, comprises several operating positions and saw blade replacing position.When cover assembly 30 was in the operating position, body portion 28b and the director element 77 of saw blade kept in touch.Cover assembly 30 is in saw blade when changing the position, saw blade 28 and director element 77 relative away from, operator saw blade 28 can be taken out or clamping to saw blade clamping relieving mechanism 96.
By reference to the accompanying drawings 5 and accompanying drawing 8, the large end 57 of first connecting rod 56 and small end 58 relative positions are fixed, corresponding to O1 among Fig. 8 and two fulcrums of O2.When cover assembly 30 was in the first operating position, cutting machine 20 can cutting thickness be the workpiece of H, and at this moment, pivotal arm 48 is in the A point with the tie point of boot main body 46, and second connecting rod 59 is in the B point with the tie point of boot main body 46, and director element 77 is in the P point.By reference to the accompanying drawings 6 and accompanying drawing 8 cover assemblies 30 when being in the second operating position, the thickness of workpiece that cutting machine 20 can cut is H1, H1>H.At this moment, pivotal arm 48 is in A with the tie point of boot main body 46 " point, second connecting rod 59 is in B with the tie point of boot main body 46 " point, and director element 77 is in P " point.When cover assembly 30 on another boundary during the position between the first operating position and the second operating position, the thickness of workpiece that cutting machine 20 can cut is between H1 and the H.At this moment, pivotal arm 48 is in A ' point with the tie point of boot main body 46, and second connecting rod 59 is in B ' point with the tie point of boot main body 46, and director element 77 is in P ' point.When director element 77 was in above-mentioned three positions, its vertical range with respect to support arm 62 was respectively D1, D2, D3.D1, the deviation between D2 and the D3 is very little, usually is no more than 2mm.The width W of saw blade 28 is comprised of two parts, the width W 1 of body portion 28b and the width W 2 of working portion 28a.When director element 77 was in different operating positions at cover assembly 30, director element 77 was with respect to the deviation of the vertical range of support arm 62 width W 1 less than the body portion 28b of saw blade, and director element 77 can keep in touch with body portion 28b all the time.Simultaneously, the axis X 5 basic maintenance levels of director element 77.
Referring to accompanying drawing 7, cover assembly 30 is in saw blade and changes the position, at this moment, pivotal arm 48 and second connecting rod 59 turn to maximum angle with respect to support arm 62 and first connecting rod 56 respectively, the side 59a of second connecting rod 59 and the stop surface 112 on the boot main body 46 against, saw blade 28 and director element 77 away from, throw off contact fully.The director element 77 of this moment is D4 with the vertical range of support arm 62, and director element 77 is compared with the vertical range of support arm 62 when being in the operating position with cover assembly 30, and deviation is much larger than 2mm.At this moment, axis X 5 relative levels of director element 77 are inclined.
Referring to accompanying drawing 13 to 18, Anchor plate kit 32 is located between cover assembly 30 and the workbench 22.Anchor plate kit 32 comprises the work clamps 79 of vertically exerting pressure to workpiece 34 for respect to workbench 22, adjustable pressing plate adjusting mechanism 33 that makes work clamp 79 be in different upright positions.Cover assembly 30 comprises the interlinked mechanism 100 of being located between support arm 62 and the boot main body 46, when pivotal arm 48 relative support arms 62 pivot, interlinked mechanism 100 drives boot main body 46 and rotates with respect to pivotal arm 48, when thereby boot main body 46 was in the first operating position and the second operating position, work clamp 79 remained level.Cover assembly 30 can be in several turned positions with respect to workbench 22, comprises several operating positions and saw blade replacing position.When cover assembly 30 was in the operating position, work clamp 79 remained level.When cover assembly 30 is in saw blade replacing position, work clamp 79 perks, the operator saw blade 28 can be taken out or clamping clamps on the relieving mechanism 96 to saw blade.
Work clamp 79 has pressing plate opening 115.Saw blade 28 passes pressing plate opening 115 after the opening 40 on the workbench 22 passes, in the gap between two rolling bearings.One end of work clamp 79 is with respect to the slightly acclivitous presser feet 116 of pressing plate plane 79a.Workpiece 34 is placed on the upper surface 36 of workbench 22, places lower time of pressing plate plane 79a, and 116 pairs of workpiece 34 of the presser feet of inclination play the guiding role.An end relative with presser feet 116 is extended with support column 117 along the direction perpendicular to pressing plate plane 79a, is used for work clamp 79 is fixed on boot main body 46.
Pressing plate adjusting mechanism 33 comprises is located at the adjusting spanner 80 that rotates with respect to pressing plate plane 79a on the boot main body 46, with the chute connecting rod 83 that adjusting spanner 80 links to each other, the swing connecting bar 82 that links to each other with support column 117.
Support column 117 has longitudinal axis X6, offers retaining thread hole 118 along the direction perpendicular to longitudinal axis X6, and swing connecting bar 82 links to each other with support column 117 by large screw 125.
Regulate spanner 80 and comprise the coupling part 80a that links to each other with chute connecting rod 83 and the spanner part 80b that extends radially outwardly with respect to coupling part 80a.Coupling part 80a is essentially cylindrical, comprises the axially extended accepting hole 80c that connects pin 119 be used to accommodating, and the fixing screw hole 80d that radially penetrates accepting hole 80c.Accepting hole 80c comprises a planar section, mates with the plane that a columniform end that is connected pin 119 arranges.Connect pin 119 and be provided with the fixing hole 120 that radially extends.Fixing hole 120 on hold-down screw 121 passes fixing screw hole 80d and is connected pin 119 will be regulated spanner 80 relative fixing with connection pin 119.Connect pin 119 and run through connecting hole 122 on the boot main body 46, its other end links to each other with connecting hole 83a on the chute connecting rod 83, thereby, when rotating adjusting spanner 80, can rotate accordingly chute connecting rod 83.
Swing connecting bar 82 links to each other with collar 124 by connecting pin 123 with chute connecting rod 83.Chute connecting rod 83 comprises the kidney slot 83b of longitudinal extension, and an end of chute connecting rod 83 links to each other with boot main body 46.One end of swing connecting bar 82 links to each other with support column 117, and the other end links to each other with chute connecting rod 83 by connecting pin 123.Chute connecting rod 83 can be under the effect of regulating spanner 80 be connected pin 119 pivoting actions around what link to each other with boot main body 46, and further drive swing connecting bar 82 with respect to work clamp 79 around the pivot rotation that links to each other with support column 117.In the present embodiment, the sidewall of boot main body 46 is provided with connecting rod accepting groove 126, and swing connecting bar 82 and chute connecting rod 83 be 126 motions in the connecting rod accepting groove.Connecting rod accepting groove 126 has two end walls 126 and 127, and chute connecting rod 83 turns to when one of them end wall contacts, and pressing plate adjusting mechanism 33 can not further be regulated, and namely pressing plate adjusting mechanism 33 is in limit adjusting position.End wall 126 and 127 serves as the backstop step, prevents that work clamp 79 from skidding off boot main body 46 in the process of regulating.Meanwhile, work clamp 79 is driven along the direction perpendicular to workbench 22 table tops and moves.
In the present embodiment, Anchor plate kit 32 comprises and is contained in the guide pillars 84 that link to each other with support column 117 in the boot main body 46, and an end is pressed on the other end on the boot main body 46 and is resisted against spring 85 on the support column 117.Guide pillar 84 links to each other with support column by screw thread, and spring 85 is sheathed on the guide pillar 84.Work clamp 79 is driven when mobile, the power that spring 85 provides work clamp 79 to compress towards the surface of workbench 22 all the time.It will be recognized by those skilled in the art that spring herein can be with other flexible member replacement, such as sheet spring, elastic ring etc.Like this, when work clamp 79 was pressed on the workpiece 34, the operator only need to be along the direction travelling workpiece of the upper surface 36 that is parallel to workbench 22, and did not need extra providing to press down the power of workpiece, handled easily person travelling workpiece.The pressure that work clamp provides is even, has reduced vibrative possibility in the processed process of workpiece.
To accompanying drawing 17, when cover assembly 30 was fixed on the predetermined operating position, work clamp 79 can carry out the position adjustment under the effect of pressing plate adjusting mechanism 33 referring to accompanying drawing 15.When Anchor plate kit 32 was positioned at position shown in the accompanying drawing 15, the distance between the upper surface 36 of pressing plate plane 79a and workbench 22 was G1, and at this moment, swing connecting bar 82 is in vertical position basically, and chute connecting rod 83 relative swing connecting bar 82 are the setting of acute angle angle.Rotate and regulate spanner 80, swing connecting bar 82 and chute connecting rod 83 relatively rotate, when Anchor plate kit 32 is in position shown in the accompanying drawing 16, distance between the upper surface 36 of pressing plate plane 79a and workbench 22 is G2, the certain angle of upper surface 36 inclinations of swing connecting bar 82 relative workbench 22 is basically with in obtuse angle angle setting of chute connecting rod 83.Further rotate and regulate spanner 80, when Anchor plate kit 32 is in position shown in the accompanying drawing 17, the 83 relative swing connecting bar 82 substantially parallel settings of chute connecting rod.The end points of chute connecting rod 83 is positioned at a side of swing connecting bar 82 and chute connecting rod 83 lines, and the operator needs counter-rotation to regulate spanner 80, and work clamp 79 is moved.
By pressing plate adjusting mechanism 33 is set, when the cover assembly 30 of cutting machine 20 is in a fixing operating position, need not regulates specially guard shield retaining mechanism 63 and just can realize that the working depth in the certain limit regulates.
Although only describe and illustrate several embodiments of the present invention in this specification, but those skilled in the art should easily predict be used to carrying out function described herein/or obtain other means or the structure of structure described herein, and the variation that each is such or revise is considered as within the scope of the invention.