CN101898261B

CN101898261B - Oblique saw

Info

Publication number: CN101898261B
Application number: CN2010101922319A
Authority: CN
Inventors: 龙军
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: NANTONG BAOTIAN PACKING MACHINERY CO Ltd
Priority date: 2009-05-27
Filing date: 2010-05-26
Publication date: 2012-11-14
Anticipated expiration: 2030-05-26
Also published as: CN101898260B; CN102699428B; CN101898261A; CN101898260A; CN201711597U; CN201711601U; CN102699428A

Abstract

The invention discloses an oblique saw, comprising a workbench for the placement of workpieces, which includes a front side and a rear side both limiting a first direction; a saw mechanism, which comprises a saw blade for cutting the workpieces and a motor driving the saw blade to rotate; and a sliding mechanism, which is in fit connection between the rear side of the workbench and the saw mechanism, wherein the saw mechanism slides between a first position and a second position in relation to the workbench via the sliding mechanism, the sliding mechanism includes a fixed length device limiting the sliding of the saw mechanism in the first direction, and by adjusting the fixed length device, the saw mechanism can include at least two terminal positions, sliding in the same direction, between the first position and the second position in relation to the workbench. The oblique saw according to the invention can realize the arrangement of the saw mechanism within different and accurate sliding travel scopes, so that, during the cutting of the workpieces, the sliding travel of the saw mechanism in relation to the workbench can be set according to the width of the workpieces, thus the working efficiency is enhanced.

Description

Diagonal cutting saw

Technical field

The present invention relates to a kind of diagonal cutting saw, especially a kind of diagonal cutting saw with slip cutting mechanism.

Background technology

Traditional diagonal cutting saw has very wide range of application as a kind of cutting tool, can be used to cut a lot of metals or nonmetallic materials, cuts efficient and convenient.Diagonal cutting saw generally comprises pedestal, is positioned at the workbench on the pedestal, the support that connects with workbench and be connected the saw blade that comprises cut workpiece and the saw of the motor that drives saw blade on the support.During use, place on the workbench as long as will be cut workpiece, then push saw downwards, saw blade descends to cutting thereupon and is cut workpiece, so just can realize being cut the cutting purpose of workpiece.

But find that in actual use the cutting width of traditional diagonal cutting saw is limited, the width of cut workpiece wideer a little the time cut just cumbersome; To this; Industry staff has carried out some improvement, on diagonal cutting saw, is provided with the slip cutting structure, makes saw to slide with respect to workbench; Like this, the cutting width of diagonal cutting saw just can have been regulated.A kind of mitre saw is disclosed like the open application for a patent for invention CN1672844A of China; The base part that keeps workpiece to be cut above comprising; Retainer is supported to the rear side of said base part movably, and the fixed mechanism fixed retainer is with respect to the pivot location of base part, and guide post partly comprises two guide posts that are supported on the retainer; The saw blade support section is mounted slidably with respect to said guide post, but and with respect to said guide post fixed-site selectively.When the saw blade support section is fixed with respect to the position of said guide post, the same like this with traditional diagonal cutting saw, the cutting of can not sliding, and can only cut workpiece less than the saw blade cutting width; And, just need the saw blade support section be slided into range with respect to said guide post at the workpiece of cut ratio broad when saw blade support section with respect to said guide post slidably the time, to guarantee that workpiece is by cutting fully.

Though above-mentioned mitre saw has the slip cutting mechanism; Workpiece that can the cut ratio broad, but when the workpiece of cutting different in width, Artificial Control difficulty relatively in the time of need not using full sliding stroke; It is long or too short to cause workpiece not cut the distance that perhaps will cut fully; Total travel is slided and is caused the waste of clipping time, and can strengthen the operating space, reduces operating efficiency.

For this reason, prior art is necessary further improvement in fact.

Summary of the invention

To the deficiency of prior art, the object of the present invention is to provide a kind of diagonal cutting saw that slip cutting mechanism and sliding stroke can accurately be controlled that has.

The technical solution adopted for the present invention to solve the technical problems is: a kind of diagonal cutting saw comprises being used for the workbench of place work piece that said workbench has front side and the rear side that limits first direction; Saw, said saw comprise be used for cut workpiece saw blade and drive said saw blade motor rotating; Slide mechanism; Said slide mechanism is coupled to behind the workbench between the example and saw; Said saw is sliding between the primary importance and the second place with respect to workbench on the first direction through slide mechanism; Said slide mechanism has the length control device that the restriction saw slides on first direction, can make saw between the primary importance and the second place, have at least two terminal locations that slide in the same way with respect to said workbench through regulating length control device.

Preferably; Said slide mechanism has with respect to the sliding support side of stationary table and the slip side of sliding with respect to workbench; Said slide mechanism comprise with sliding support side and slip side the two one of the guide rail that connects, said length control device comprises and being arranged on the guide rail and along guide rail longitudinally length or at least one locating slot that highly increases progressively and along moving perpendicular to the guide rail longitudinally and part extend into the keeper of said locating slot.

Preferably; Said slide mechanism has with respect to the sliding support side of stationary table and the slip side of sliding with respect to workbench; Said slide mechanism comprise with sliding support side and slip side the two one of the guide rail that connects, said length control device comprises that several locating slots of being arranged on the guide rail and being provided with at interval along the guide rail longitudinally and at least one are along moving perpendicular to the guide rail longitudinally and part extend into the keeper of said locating slot.

Preferably, be provided with scale in the position of positioned adjacent groove on the said guide rail, the corresponding sliding stroke that shows saw with respect to workbench of said scale.

Preferably, said keeper is arranged on the two the another one of sliding support side and slip side.

Preferably, described locating slot is a step shape along the guide rail longitudinally or perpendicular to the guide rail longitudinally.

Preferably; Said slide mechanism has with respect to the sliding support side of stationary table and the slip side of sliding with respect to workbench; Said length control device comprise be arranged on sliding support side and slip side the two one of on the scale assembly and be arranged on the sliding support side and the two another one of slip side on stop part, described scale assembly comprises rod support, passing rod support can be along the jig that moves on the guide rail longitudinally and offset with said stop part.

Preferably, said scale assembly also wrap be installed on the rod support with jig with respect to rod support be fixed at least two positions locking member.

Preferably, an end of said jig is provided with the butting section, and described butting section and said stop part offset.

Preferably, said saw can have three terminal locations that slide in the same way with respect to said workbench through the adjusting of length control device between the primary importance and the second place, thereby saw can slide in three different sliding strokes.

Compared with prior art; The invention has the beneficial effects as follows: diagonal cutting saw of the present invention can be arranged on saw in the different sliding stroke scopes with exact length through length control device is set; Make diagonal cutting saw when the workpiece of cutting different in width, can select needed sliding stroke accurately through the operation length control device; Thereby when cut workpiece, can set the sliding stroke of saw according to the width of workpiece with respect to workbench; Save the time of cut workpiece, improved operating efficiency and operational comfort.

Description of drawings

Do further explain below in conjunction with accompanying drawing and the preferred embodiments of the present invention.

Fig. 1 is the front view of first embodiment of diagonal cutting saw of the present invention.

Fig. 2 is the stereogram of first embodiment of diagonal cutting saw of the present invention.

Fig. 3 is the slide mechanism cutaway view partly of first embodiment of diagonal cutting saw of the present invention, and sliding sleeve was locked in first sliding stroke scope and slided this moment.

Fig. 4 is the slide mechanism cutaway view partly of first embodiment of diagonal cutting saw of the present invention, and sliding sleeve was locked in second sliding stroke scope and slided this moment.

Fig. 5 is the slide mechanism cutaway view partly of second embodiment of diagonal cutting saw of the present invention.

Fig. 6 is the slide mechanism cutaway view partly of the 3rd embodiment of diagonal cutting saw of the present invention.

Fig. 7 is along the cutaway view of A-A line among Fig. 6.

Fig. 8 is the slide mechanism cutaway view partly of the 4th embodiment of diagonal cutting saw of the present invention.

Fig. 9 is along the cutaway view of B-B line among Fig. 8.

Figure 10 is the stereogram of the 5th embodiment of diagonal cutting saw.

Figure 11 is the slide mechanism cutaway view partly of the 5th embodiment of diagonal cutting saw of the present invention, and this moment, sliding sleeve was positioned at the extreme position near support.

Figure 12 is the slide mechanism cutaway view partly of the 5th embodiment of diagonal cutting saw of the present invention, and this moment, sliding sleeve was positioned at the terminal location away from support of setting sliding stroke.

Wherein, the related elements reference numeral is following:

1. pedestal 2. workbench 4. supports

5. slide mechanism 6. saws 7, the 7a. length control device

21. front side 22. rear sides, 51. guide rails

52. sliding sleeve 53. locating parts 521. locating holes

61. saw blade 62.

motors

71,71a, 71b, 71c. locating slot

72,72a. keeper 75. scale assemblies 76. stop parts

751. rod support 752. jigs 753. lock-screws

755. butting section

The specific embodiment

With reference to Fig. 1, the present invention has disclosed a kind of diagonal cutting saw, especially a kind of diagonal cutting saw with slip cutting mechanism.Diagonal cutting saw comprises pedestal 1; Be positioned at being used on the pedestal 1 and place the workbench 2 that is cut workpiece; Workbench 2 has the front side 21 and rear side 22 that limits first direction; The saw 6 of cut workpiece, with the slide mechanism 5 that rear side of workbench 2 22 and saw 6 connect, saw 6 is sliding between the primary importance and the second place with respect to workbench 2 on the first direction through slide mechanism 5.Slide mechanism 5 has sliding support side of fixing with respect to workbench 2 and the slip side of sliding with respect to workbench 2; Slide mechanism 5 comprises the support 4 that is installed on the workbench 2, is fixed on the guide rail 51 on the support 4 and slidably is installed in the sliding sleeve 52 on the guide rail 51, and saw 6 is connected on the sliding sleeve 52.Saw 6 comprise be used for cut workpiece saw blade 61 and drive saw blade 61 motor rotating 62, saw 6 can slide with respect to workbench 2 total travel on first direction on guide rail 51 along with sliding sleeve 52, promptly sliding sleeve 52 is the slip side; Support 4 is the sliding support side with guide rail 51.Be provided with the length control device 7 that restriction saw 6 slides between slip side and the sliding support side on first direction.

With reference to Fig. 2; The front side 21 of workbench 2 is near the operator; Relative rear side 22 is away from the operator, and guide rail 51 is fixed on the support 4, and sliding sleeve 52 is set on the guide rail 51 and can slides along guide rail 51; Guide rail 51 is provided with locating part 53 with respect to the front side 21 of workbench 2, prevents that sliding sleeve 52 from skidding off guide rail 51 because of operate miss to front slide the time.Saw 6 is in primary importance when sliding sleeve 52 abuts to support 4 and can not slide backward so, and saw 6 is in the second place when sliding sleeve 52 abuts to locating part 53 and can not be to front slide.Be the whole sliding stroke of saw 6 along the distance of longitudinally from the primary importance to the second place of guide rail 51.Length control device 7 comprises the locating slot 71 that is arranged on the guide rail 51 and is arranged on the keeper 72 on the sliding sleeve 52; As shown in Figure 3; Locating slot 71 is set to step-like along the longitudinally perpendicular to guide rail 51; To scale should be arranged, show the sliding stroke that saw 6 is different or the width of diagonal cutting saw institute ability cut workpiece under each step, keeper 72 is through being arranged on screwed hole on the sliding sleeve 52 and being installed on the sliding sleeve 52 and extending in the locating slot 71; Thereby the lock height through regulating keeper 72 can be controlled at sliding sleeve 52 in the different sliding stroke scopes with saw 6, we can say that also saw 6 has different slip terminal locations with respect to workbench 2.Locating slot 71 also can conveniently be processed along being arranged to inclined plane shape perpendicular to the longitudinally of guide rail 51 like this, only needs to get final product with respect to the extreme positions sign scale that workbench 2 slides at the sliding stroke place or the saw 6 of correspondence.The preferred keeper 72 of the present invention is a screw, not only can position, and also can realize fine setting.Locating slot 71 also is not limited to top structure; Be locating slot 71 so long as increase progressively just passable along guide rail longitudinally height; Certainly, if restriction saw 6 is with respect to workbench 2 slip forward, then locating slot 71 is along 21 direction height increases progressively to the front side from rear side 22; If limit saw 6 with respect to workbench 2 motion backward, then locating slot 71 is along the 21 direction height to rear side 22 increase progressively from the front side.No matter be forward or backward, saw 6 has at least two terminal locations with respect to workbench 2.

When diagonal cutting saw slides cutting; The width of its cut workpiece is the sliding stroke that saw blade cutting width S (see figure 1) adds saw 6; If the scale value of locating slot 71 is represented sliding stroke on the guide rail 51; Be the length that sliding sleeve 52 slides on guide rail 51, the length that also to be saw 6 slide with respect to workbench 2, the width of diagonal cutting saw institute ability cut workpiece is the scale value that saw blade cutting width S adds sliding stroke so; If the scale value of locating slot 71 is represented the cut workpiece width on the guide rail 51, the sliding stroke of diagonal cutting saw saw 6 is that the scale value of cut workpiece width deducts saw blade cutting width S so.But in actual the use when setting the width of cut workpiece, but all the width than the reality cut workpiece is big.The width of the workpiece of using as usual is 8 inches or 12 inches; We can be set to 9 inches or 13 inches when the cut workpiece width is set so; And the length that sliding sleeve 52 slides on guide rail 51 to be saw 6 actual with respect to the sliding stroke of workbench 2 is 9 inches and deducts S or 13 inches and deduct S, so just can guarantee that cut workpiece is by cutting fully.

Continuation is with reference to Fig. 3, when the width of cut workpiece just needs the diagonal cutting saw cutting of sliding during greater than saw blade cutting width S.If the scale of first scale of locating slot 71 and second scale or first step and second step correspondence is set to 9 inches and 13 inches respectively; At the width of cut workpiece greater than saw blade cutting width S during smaller or equal to 8 inches; Workpiece is located on workbench 2; Unclamp keeper 72, sliding sleeve 52 is slided into keeper 72 correspondences in 9 inched positions, perhaps sliding sleeve 52 is slided into the position of keeper 72 correspondences at locating slot 71 first steps; Regulate keeper 72 make sliding sleeve 52 can be in 9 inched positions or first step slide freely to workbench 2 rear sides 22; And can not cross 9 inched position or first steps, and this moment, saw 6 just was controlled in 9 inches sliding stroke scopes that deduct S, and sliding sleeve 52 is locked in and slides in first sliding stroke scope in other words; Be that saw 6 can only slide between first step and primary importance, first step has formed first terminal location that saw slides so.

With reference to Fig. 4; At the width of cut workpiece greater than 8 inches during smaller or equal to 12 inches; Unclamp keeper 72, sliding sleeve 52 is slided into keeper 72 correspondences in 13 inched positions, perhaps sliding sleeve 52 is slided into the position of keeper 72 correspondences at locating slot 71 second steps; Regulate keeper 72 make sliding sleeve 52 can be in 13 inched positions or second step slide freely to workbench 2 rear sides 22; And can not cross 13 inched position or second steps, and this moment, saw 6 just was controlled in 13 inches sliding stroke scopes that deduct S, and sliding sleeve 52 is locked in and slides in second sliding stroke scope in other words; Be that saw 6 can only slide between second step and support 4, second step has formed second terminal location that saw slides so.Certainly, be not limited to 9 inches or 13 inches when the scale of length and quantity or locating slot 71 of step of locating slot 71 is set on guide rail 51, can set scale value according to the needs that reality is used, perhaps scale unit is such as millimeter, decimetre etc.The present invention preferably is provided with three steps, and corresponding saw 6 is with respect to three of workbench 2 different sliding strokes respectively, and promptly the 3rd step has formed the 3rd terminal location that saw slides.When realizing cutting different in width workpiece, guarantee the simple of structure again like this, also make the adjusting ratio of length control device 7 be easier to.

When needs cut certain-length and need it does not cut off on cut workpiece, also can operate length control device 7 and carry out fixed length cutting.No matter be that restriction saw 6 can realize that with respect to workbench 2 slip or slip backward forward those skilled in the art are easy to concrete mode of operation expect, repeat no more here.

With reference to Fig. 5, be second kind of embodiment of the locating slot in the length control device 7 71.Locating slot 71a is arranged at intervals with several along the longitudinally of guide rail 51; The sliding stroke that corresponding saw 6 is different; Keeper 72a is screw, pin or pin, and the perhaps any parts that can realize its function are such as the pressing structure of the similar ball pen that we often use.Certainly, if limit saw 6 with respect to workbench 2 motion forward, then keeper 72a is stuck in a side of the contiguous saw 6 of sliding sleeve 52; If limit saw 6 with respect to workbench 2 motion backward, then keeper 72a is stuck in the side in the near bracket 4 of sliding sleeve 52.

Keeper 72a can be connected on locating part 53 or support 4 or the sliding sleeve 52 through rope or chain, with prevent without the time arbitrarily abandon.The slip with restriction sliding sleeve 52 is controlled at saw 6 in the different sliding stroke scopes among the different locating slot 71a thereby keeper 72a can directly be inserted into.

With reference to Fig. 6 and Fig. 7, be the third embodiment of the locating slot in the length control device 7 71.Locating slot 71b is along the longitudinally setting of guide rail 51; And locating slot 71b is step-like along the longitudinally of guide rail 51; The sliding stroke that the corresponding saw of each step 6 is different; The position of sliding sleeve 52 step of corresponding locating slot 71b on the longitudinally perpendicular to guide rail 51 is provided with several locating holes 521; Keeper 72a is screw, pin or pin, thereby keeper 72a is inserted in the different locating hole 521 and extend into and is stuck in the slip that limits sliding sleeve 52 on the different steps in the locating slot 71b saw 6 is controlled in the different sliding stroke scopes.Locating slot 71b also can be set to inclined plane shape along the longitudinally of guide rail 51, can conveniently process like this, only needs to indicate scale at saw 6 corresponding sliding stroke places and gets final product.Sliding sleeve 52 is provided with several locating holes 521 in the position of corresponding scale on perpendicular to the longitudinally of guide rail 51, thereby so also can realize keeper 72a is inserted in the different locating hole 521 and extend in the locating slot 71b is controlled at saw 6 in the different sliding stroke scopes.Locating slot 71b also is not limited to top structure; Be locating slot 71b so long as increase progressively just passable along guide rail longitudinally length; Certainly, if limit saw 6 with respect to workbench 2 motion forward, then locating slot 71b is along increasing progressively from the direction length of rear side 22 to front side 21; If limit saw 6 with respect to workbench 2 motion backward, then locating slot 71b is along the 21 direction length to rear side 22 increase progressively from the front side.

With reference to Fig. 8 and Fig. 9, be the 4th kind of embodiment of the locating slot in the length control device 7 71.Locating slot 71c is provided with several along the longitudinally perpendicular to guide rail 51; And the longitudinally length along guide rail 51 increases progressively; The sliding stroke that the corresponding saw of the length of each locating slot 71c 6 is different; The position of sliding sleeve 52 corresponding locating slot 71c on the longitudinally perpendicular to guide rail 51 is provided with several locating holes 521; Keeper 72a is screw, pin or pin, thereby keeper 72a can directly be inserted among the different locating slot 71c or be inserted into through being arranged on locating hole 521 on the sliding sleeve 52 that the slip with restriction sliding sleeve 52 is controlled at saw 6 in the different sliding stroke scopes among the different locating slot 71c.Certainly, if limit saw 6 with respect to workbench 2 motion forward, then locating slot 71c is along increasing progressively from the direction length of rear side 22 to front side 21; If limit saw 6 with respect to workbench 2 motion backward, then locating slot 71c is along the 21 direction length to rear side 22 increase progressively from the front side.

On diagonal cutting saw shown in Figure 10, be provided with among the 5th embodiment of length control device, similarly parts use with Fig. 1 to Fig. 4 in identical label.

With reference to Figure 10; Length control device 7a comprises the scale assembly 75 that is arranged on the sliding sleeve 52 and is arranged on the stop part 76 on the support 4; Scale assembly 75 comprises rod support 751, jig 752 and lock-screw 753; Jig 752 passes rod support 751, and lock-screw 753 is installed in and is used for locking jig 752 on the rod support 751, and jig 752 is provided with scale value.Rod support 751 is plastic on sliding sleeve 52, also can dismountablely be installed on the sliding sleeve 52.Stop part 76 is provided with a perforation and supplies jig 752 to pass; Jig 752 is equipped with butting section 755 near an end of support 4; Butting section 755 can be a nut; Screw, perhaps perhaps " L " type of T-shape that is shaped as of jig 752 is promptly as long as jig 752 can be stuck on the stop part 76 near the end of support 4.Indicating on the jig 752 has scale, the sliding stroke that corresponding saw 6 is different or the width of diagonal cutting saw institute ability cut workpiece.Above said be the restriction saw 6 with respect to workbench 2 motion forward, if the restriction saw 6 with respect to workbench 2 motion backward, then jig 752 directly is resisted against on the stop part 76 and gets final product.

When the width of cut workpiece during, just can make the diagonal cutting saw cutting of in different sliding stroke scopes, sliding through regulating scale assembly 75 greater than saw blade cutting width S.With reference to Figure 11; Slip sliding sleeve 52 makes it to be in primary importance, and promptly sliding sleeve 52 can only slide and can not slide to the rear side 22 of workbench 2 to the front side of workbench 2 21 along guide rail 51 this moment, sets sliding stroke or the width of diagonal cutting saw institute ability cut workpiece of the saw 6 of needs according to the scale on the jig 752; The lock-screw 753 of screwing is fixing with jig 752; Along guide rail 51 to the front side of workbench 2 21 slip sliding sleeves 52 till can not sliding, shown in figure 12, the butting section 755 on the jig 752 is stuck on the stop part 76; Sliding sleeve 52 is positioned at first terminal location of setting sliding stroke, places the workpiece cutting of can sliding this moment.

When length control device 7a is set on diagonal cutting saw; The position of its scale assembly 75 and stop part 76 can exchange; Promptly can stop part 76 be arranged on the sliding sleeve 52; Scale assembly 75 is arranged on the support 4, because sliding sleeve 52 slides with respect to workbench 2, support 4 is fixed with respect to workbench 2; So as long as sliding sleeve 52 and support 4 the two one of on scale assembly 75 is set, on the two the another one of sliding sleeve 52 and support 4 stop part 76 is set and just can realizes saw 6 is controlled in the different scopes of sliding stroke accurately with respect to workbench 2.

Above specification the is described diagonal cutting saw of cutting a kind of of diagonal cutting saw that just slide that slide because slide mechanism 5 is arranged on the work top, also can be called the slip diagonal cutting saw of rail structure pattern; And the structural shape of slip diagonal cutting saw also has a lot; As belong to the rail structure form equally, and slide mechanism comprises slidably rack-mount guide rail, saw 6 is fixed on the guide rail; Saw can slide with respect to workbench along with guide rail; The slip side of the diagonal cutting saw of this version is a guide rail so, and the sliding support side is a support, when length control device 7 is set; Locating slot 71 is arranged on the guide rail 51, and keeper 72 is arranged on the support; When setting includes the length control device 7a of scale assembly 75; With scale assembly 75 be arranged on slip side and sliding support side the two one of on; Stop part 76 is arranged on the two the another one of slip side and sliding support side, can realize that also saw has different sliding strokes accurately with respect to workbench 2.

Length control device also is applicable to the slip diagonal cutting saw of glidepath structural shape; And the slip diagonal cutting saw of two-stage rail structure pattern up and down; When length control device 7 was set, locating slot 71 was arranged on the guide rail 51, and keeper 72 is arranged on respect to guide rail 51 fixing sides of perhaps sliding; When setting includes the length control device 7a of scale assembly 75; With scale assembly 75 be arranged on slip side and sliding support side the two one of on; Stop part 76 is arranged on the two the another one of slip side and sliding support side, can realize that also saw has different sliding strokes accurately with respect to workbench 2.

Length control device in the diagonal cutting saw of the present invention may be used in the slip diagonal cutting saw of above-mentioned any structural shape; As long as being installed in other words, the diagonal cutting saw of slide mechanism can use the length control device among the present invention; Concrete structure those skilled in the art can expect easily, repeat no more here.Certainly, no matter used the structure of the length control device described in the above-mentioned specification in the slip diagonal cutting saw of any structural shape, all dropped in the protection domain of claim of the present invention.

Diagonal cutting saw provided by the present invention can be arranged on saw in the different sliding stroke scopes with exact length; Make diagonal cutting saw when the different in width of workpiece that cuts different in width or cut workpiece, can select needed sliding stroke accurately; Thereby when cut workpiece, can set the sliding stroke of saw by cutting width as required with respect to workbench; Saved the time of cut workpiece, improved operating efficiency and operational comfort, helped on industry, applying.

Claims

1. diagonal cutting saw comprises being used for the workbench (2) of place work piece that said workbench (2) has front side (21) and the rear side (22) that limits first direction; Saw (6), comprise be used for cut workpiece saw blade (61) and drive said saw blade (61) motor rotating (62); Slide mechanism (5); Said slide mechanism (5) is coupled between workbench (2) rear side (22) and the saw (6); Said saw (6) is sliding between the primary importance and the second place with respect to workbench (2) on the first direction through slide mechanism (5); Said slide mechanism (5) have the length control device that restriction saw (6) slides on first direction (7,7a), through regulating length control device (7; 7a) can make saw (6) between the primary importance and the second place, have at least two terminal locations that slide in the same way with respect to said workbench (2); It is characterized in that: said slide mechanism (5) has with respect to fixing sliding support side of workbench (2) and the slip side of sliding with respect to workbench (2), said slide mechanism (5) comprise with sliding support side and slip side the two one of the guide rail (51) that connects, said length control device (7) comprises and being arranged on the guide rail (51) and along guide rail (51) longitudinally length or at least one locating slot (71 of highly increasing progressively; 71b; 71c) and along perpendicular to guide rail (51) longitudinally move and the part extend into said locating slot (71,71b, keeper 71c) (72).

2. diagonal cutting saw as claimed in claim 1 is characterized in that: said guide rail (51) go up the positioned adjacent groove (71,71b, position 71c) is provided with scale, the corresponding sliding stroke that shows saw (6) with respect to workbench (2) of said scale.

3. diagonal cutting saw as claimed in claim 1 is characterized in that: and said keeper (72,72a) be arranged on the two the another one of sliding support side and slip side.

4. diagonal cutting saw as claimed in claim 1 is characterized in that: and described locating slot (71, be step shape 71b) along guide rail (51) longitudinally or perpendicular to guide rail (51) longitudinally.

5. diagonal cutting saw as claimed in claim 1; It is characterized in that: said saw (6) is through length control device (7; Adjusting 7a) can have three terminal locations that slide in the same way with respect to said workbench (2) between the primary importance and the second place, thereby saw (6) can slide in three different sliding strokes.