CN201586788U

CN201586788U - Diagonal cutter

Info

Publication number: CN201586788U
Application number: CN2009201588157U
Authority: CN
Inventors: 龙军
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-09-22
Anticipated expiration: 2019-05-27

Abstract

A diagonal cutter comprises a working bench for holding work pieces, and a sawing mechanism, wherein the working bench is provided with a front side and a rear side which limit a first direction, the sawing mechanism is slidably connected with the working bench in the first direction relatively to the working bench through a slide rail device, the sawing mechanism includes a saw disc cutting the work pieces and a motor driving the saw disc to rotate, and a length fixing device leading the sawing mechanism to have a plurality of fixed slide strokes relative to the working bench is arranged between the slide rail device and the working bench. The diagonal cutter can set the saw mechanism within different correct slide stroke ranges, can set the slide stroke of the sawing mechanism relative to the working bench according to widths of the work pieces when cutting the work pieces, and accordingly increases working efficiency.

Description

Bias cutter

Technical field

The utility model relates to a kind of bias cutter, especially a kind of bias cutter with slip cutting mechanism.

Background technology

Traditional bias cutter 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.Bias cutter 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 on the support and drive the saw of the motor of saw blade.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 in actual use, the cutting width of traditional bias cutter is limited, the width of cut workpiece wideer a little the time cut just cumbersome, to this, industry staff has carried out some improvement, is provided with the slip cutting structure on bias cutter, makes saw to slide with respect to workbench, like this, the cutting width of bias cutter just can have been regulated.A kind of mitre saw is disclosed as the open utility application CN1672844A of China, the base part that keeps workpiece to be cut above comprising, retainer is supported to the rear side of described base part movably, the fixed mechanism fixed retainer is with respect to the pivot location of base part, guide post partly comprises two guide posts that are supported on the retainer, the saw blade support section is mounted slidably with respect to described guide post, but and with respect to described guide post fixed-site selectively.When the saw blade support section is fixed with respect to the position of described guide post, the same like this with traditional bias cutter, the cutting of can not sliding, and can only cut workpiece less than the saw blade cutting width; And, just the saw blade support section need be slided into range with respect to described guide post than the workpiece of broad in cutting when saw blade support section with respect to described guide post slidably the time, cut fully with the assurance workpiece.

Though above-mentioned mitre saw has the slip cutting mechanism, can cut workpiece than broad, but when the workpiece of cutting different in width, Artificial Control difficulty relatively when not needing to use full sliding stroke, cause workpiece not cut fully, perhaps 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.

The utility model content

At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of and has the slip cutting mechanism and bias cutter that sliding stroke can accurately be controlled.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of bias cutter comprises being used for the workbench of place work piece that described workbench has front side and the rear side that limits first direction; Saw, what wherein saw slided on first direction with respect to workbench by railroad connects with workbench, described saw comprise be used for cut workpiece saw blade and drive described saw blade motor rotating, be provided with between described saw and the workbench and make described saw have several fixedly length control devices of sliding stroke with respect to described workbench.

Preferably, described railroad comprises the guide rail that connects with workbench, described length control device comprise with respect to saw and workbench the two one of the scale assembly that fixedly installs and the stop part that fixedly installs with respect to the two another one of saw and workbench, described scale assembly comprises rod support, passing rod support can be along the jig that moves on the guide rail longitudinally and offset with described stop part.

Preferably, described scale assembly also wrap be installed on the rod support with jig with respect to rod support be fixed on several positions locking member.

Preferably, described locking member is a screw.

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

Preferably, described jig is shaped as T-shape.

Preferably, be connected with support on the described workbench, described guide rail is fixedly mounted on the support, described railroad also comprises the sliding sleeve that slidably is installed on the guide rail, described saw is connected on the sliding sleeve and can slides with respect to workbench along guide rail together with sliding sleeve, described scale assembly be arranged on support and sliding sleeve the two one of on, described stop part is arranged on the two the another one of support and sliding sleeve.

Preferably, be connected with support on the described workbench, described guide rail is slidably rack-mount, described saw is connected on the guide rail and can slides with respect to workbench together with guide rail, described scale assembly be arranged on support and guide rail the two one of on, described stop part is arranged on the two the another one of support and guide rail.

Preferably, described guide rail slidably is connected with workbench, on the described guide rail support is installed, described saw is rack-mount and along with support and guide rail slide with respect to workbench together, described scale assembly be arranged on workbench and guide rail the two one of on, described stop part is arranged on the two the another one of workbench and guide rail.

Preferably, described guide rail is connected with stationary table, described railroad also comprises the sliding sleeve that slidably is installed on the guide rail, on the described sliding sleeve support is installed, described saw is rack-mount and along with support and sliding sleeve slide with respect to workbench along guide rail together, described scale assembly be arranged on workbench and sliding sleeve the two one of on, described stop part is arranged on the two the another one of workbench and sliding sleeve.

Compared with prior art, the beneficial effects of the utility model are: bias cutter of the present utility model can be arranged on saw in the different sliding stroke scopes with exact length by length control device is set, make bias cutter when the workpiece of cutting different in width, can select needed sliding stroke accurately, 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

Be described in further detail below in conjunction with accompanying drawing and preferred embodiment of the present utility model.

Fig. 1 is the front view of the utility model bias cutter.

Fig. 2 is the stereogram that is provided with length control device first embodiment on the utility model bias cutter.

Fig. 3 is the cutaway view that is provided with the railroad part of length control device first embodiment on the utility model bias cutter, and sliding sleeve was locked in first sliding stroke scope and slided this moment.

Fig. 4 is the cutaway view that is provided with the railroad part of length control device first embodiment on the utility model bias cutter, and sliding sleeve was locked in second sliding stroke scope and slided this moment.

Fig. 5 is the another kind of version schematic diagram that is provided with the locating slot of length control device first embodiment on the utility model bias cutter.

Fig. 6 is another the version schematic diagram that is provided with the locating slot of length control device first embodiment on the utility model bias cutter.

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

Fig. 8 is another the version schematic diagram that is provided with the locating slot of length control device first embodiment on the utility model bias cutter.

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

Figure 10 is the stereogram that is provided with length control device second embodiment on the bias cutter.

Figure 11 is the cutaway view that is provided with the railroad part of length control device second embodiment on the utility model bias cutter, and this moment, sliding sleeve was positioned at the extreme position near support.

Figure 12 is the cutaway view that is provided with the railroad part of length control device second embodiment on the utility model bias cutter, and this moment, sliding sleeve was positioned at the extreme position away from support of setting sliding stroke.

Figure 13 is the front view that is provided with length control device first embodiment on the bias cutter of the another kind of structure of the utility model.

Figure 14 is the front view that is provided with length control device second embodiment on the bias cutter of the another kind of structure of the utility model.

Figure 15 is the front view that is provided with length control device first embodiment on the bias cutter of another structure of the utility model.

Figure 16 is the front view that is provided with length control device second embodiment on the bias cutter of another structure of the utility model.

Figure 17 is the front view that is provided with length control device first embodiment on the bias cutter of another structure of the utility model.

Figure 18 is the front view that is provided with length control device second embodiment on the bias cutter of another structure of the utility model.

Wherein, the related elements reference numeral is as follows:

1. pedestal 2. workbench 4,4a, 4b, 4c. support

5,5a, 5b, 5c. railroad 6. saws

7,7a. length control device 21. front sides 22. rear sides

51,51a, 51b, 51c.

guide rail

52,52c. sliding sleeve

53,53a, 53b, 53c. locating part

521. locating hole 61. saw blades 62. motors

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

slot

72,72a. keeper

75. scale assembly 76. stop parts 751. rod supports

752. jig 753. locking members 755. butting sections

The specific embodiment

With reference to Fig. 1, the utility model 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, the railroad 5 that connects with workbench 2, wherein railroad 5 is connected on the workbench 2 by support 4, workbench 2 has front side 21 and the rear side 22 that limits first direction, the saw 6 of cut workpiece connects with workbench 2 with respect to workbench 2 is that slide on first direction by railroad 5, railroad 5 comprises the guide rail 51 that is fixed on the support 4 and slidably is installed in sliding sleeve 52 on the guide rail 51, 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 on first direction with respect to workbench 2 on guide rail 51 along with sliding sleeve 52, is provided with between railroad 5 and the workbench 2 to make saw 6 have several fixedly length control devices 7 of sliding stroke with respect to workbench 2.

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, 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, skid off guide rail 51 because of operate miss when preventing that sliding sleeve 52 from sliding in front and back, length control device 7 comprises the locating slot 71 that is arranged on the guide rail 51 and is arranged on 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, under each step to there being scale to show, indicate the different sliding stroke of saw 6 or the width of diagonal cutting saw institute energy cut workpiece, keeper 72 is by being arranged on screwed hole on the sliding sleeve 52 and being installed on the sliding sleeve 52 and extend in the locating slot 71, thereby sliding sleeve 52 can be controlled at saw 6 in the different sliding stroke scopes by the lock height of regulating keeper 72.Locating slot 71 also can conveniently be processed like this along being arranged to inclined plane shape perpendicular to the longitudinally of guide rail 51, only needs to indicate scale at the sliding stroke place of correspondence and gets final product.The preferred keeper 72 of the utility model is a screw, not only can position, and also can realize fine setting.

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 energy 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 cut 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, this moment, saw 6 just was controlled in 9 inches sliding stroke scopes that deduct S, sliding sleeve 52 is locked in first sliding stroke scope and slides in other words, and promptly saw 6 can only slide between first step and support 4.

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, this moment, saw 6 just was controlled in 13 inches sliding stroke scopes that deduct S, sliding sleeve 52 is locked in second sliding stroke scope and slides in other words, and promptly saw 6 can only slide between second step and support 4.Certainly, be not limited to 9 inches or 13 inches when the scale of the length of step of locating slot 71 and quantity or locating slot 71 is set on guide rail 51, can set according to the needs that reality is used.

With reference to Fig. 5, be the another kind of version 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.Keeper 72a can be connected on locating part 53 or support 4 or the sliding sleeve 52 by 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 another version 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 the sliding stroke place of saw 6 correspondences 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 being inserted into keeper 72a in the different locating hole 521 and extending in the locating slot 71b is controlled at saw 6 in the different sliding stroke scopes.

With reference to Fig. 8 and Fig. 9, be another version 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 a screw, pin or pin, thus keeper 72a can directly be inserted among the different locating slot 71c or be inserted into by 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.

On diagonal cutting saw shown in Figure 10, be provided with in second preferred 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 stop part 76 on the support 4, scale assembly 75 comprises rod support 751, jig 752 and locking member 753, jig 752 passes rod support 751, locking member 753 is installed in and is used for locking jig 752 on the rod support 751, 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 passes for jig 752, jig 752 is equipped with butting section 755 near an end of support 4, butting section 755 can be a nut, screw, perhaps jig 752 be shaped as T-shape or " L " type, promptly as long as jig 752 can be stuck on the stop part 76 near the end of supports 4.Jig 752 subscripts are shown with scale, sliding stroke that corresponding saw 6 is different or diagonal cutting saw can cut workpiece width.

When the width of cut workpiece during, just can make the diagonal cutting saw cutting of in different sliding stroke scopes, sliding by 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 the extreme position of support 4 ends, promptly sliding sleeve 52 can only slide and can not slide to the rear side 22 of workbench 2 to the front side 21 of workbench 2 along guide rail 51 this moment, set the sliding stroke of saw 6 of needs or the width of diagonal cutting saw institute energy cut workpiece according to the scale on the jig 752, it is fixing with jig 752 to screw locking member 753, along guide rail 51 to the front side of workbench 2 21 slip sliding sleeves 52 till can not sliding, as shown in figure 12, butting section 755 on the jig 752 is stuck on the stop part 76, sliding sleeve 52 is positioned at the extreme position away from support 4 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 stop part 76 can 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 railroad 5 is arranged on the work top, the slip diagonal cutting saw that also can be called the rail structure pattern, and the structural shape of slip diagonal cutting saw also has a lot, as belonging to the rail structure form equally, with reference to Figure 13, railroad 5a comprises the guide rail 51a that slidably is installed on the support 4a, saw 6 is fixed on the end of guide rail 51a, the other end of guide rail 51a is provided with locating part 53a, skid off support 4a because of operate miss when preventing that guide rail 51a from sliding in front and back, saw 6 can slide with respect to workbench 2 along with guide rail 51a, be provided with on the diagonal cutting saw of this rail structure pattern in the length control device 7, locating slot 71 is arranged on the guide rail 51a, and keeper 72 is arranged on the support 4a; With reference to Figure 14, when setting includes the length control device 7a of scale assembly 75, scale assembly 75 is arranged on the support 4a, stop part 76 is arranged on the guide rail 51a, otherwise scale assembly 75 is arranged on the guide rail 51a, stop part 76 is arranged on the support 4a, can realize that also saw has different sliding strokes accurately with respect to workbench 2.

With reference to Figure 15, railroad 5b and workbench 2 connect, be positioned under the work top, the slip diagonal cutting saw that also is called the glidepath structural shape, railroad 5b comprises and being connected with workbench 2 and can be with respect to the guide rail 51b of workbench 2 telescopic slide, support 4b is installed in the end of guide rail 51b, the other end of guide rail 51b is provided with locating part 53b, skid off workbench 2 because of operate miss when preventing that guide rail 51b from sliding in front and back, saw 6 is connected on the support 4b, saw 6 and support 4b can be along with guide rail 51b slides with respect to workbench 2, on the diagonal cutting saw of this rail structure pattern, be provided with in the length control device 7, locating slot 71 is arranged on the guide rail 51b, and keeper 72 is arranged on the workbench 2; With reference to Figure 16, when setting includes the length control device 7a of scale assembly 75, scale assembly 75 is arranged on the workbench 2, stop part 76 is arranged on guide rail 51b or the support 4b, otherwise scale assembly 75 is arranged on guide rail 51b or the support 4b, stop part 76 is arranged on the workbench 2, can realize that also saw 6 has different sliding strokes accurately with respect to workbench 2.

With reference to Figure 17, another kind of type for the slip diagonal cutting saw of glidepath structural shape, railroad 5c comprises the guide rail 51c of fixedlying connected with workbench 2 and slidably is arranged on sliding sleeve 52c on the guide rail 51c, guide rail 51c is positioned at workbench 2 outer ends and is provided with locating part 53c, skid off guide rail 51c because of operate miss when preventing that sliding sleeve 52c from sliding in front and back, support 4c is fixedly connected on the sliding sleeve 52c, saw 6 is connected on the support 4c, saw 6 and support 4c can slide with respect to workbench 2 along guide rail 51c along with sliding sleeve 52c, on the diagonal cutting saw of this rail structure pattern, be provided with in the length control device 7, locating slot 71 is arranged on the guide rail 51c, and keeper 72 is arranged on the sliding sleeve 52c; With reference to Figure 18, when setting includes the length control device 7a of scale assembly 75, scale assembly 75 is arranged on the sliding sleeve 52c, stop part 76 is arranged on guide rail 51c or the workbench 2, otherwise scale assembly 75 is arranged on guide rail 51c or the workbench 2, stop part 76 is arranged on the sliding sleeve 52c, can realize that so equally also saw 6 has different sliding strokes accurately with respect to workbench 2.

Certainly the slip diagonal cutting saw also has work top all to be provided with the version of railroad up and down, also can be called the double sided slider bar structure, can be arbitrarily made with the slip diagonal cutting saw of double sided slider bar structure according to the slip diagonal cutting saw of different structure form recited above, its railroad just comprises first railroad that is connected with workbench so, second railroad that connects saw, wherein first railroad is connected by support with second railroad, those skilled in the art can expect the compound mode of the diagonal cutting saw of this double sided slider bar structure easily, on length control device and the above-mentioned several slip diagonal cutting saws length control device to be set the same being provided with on the diagonal cutting saw of this rail structure pattern, only need to select is to be provided with on setting or the glidepath device on the last railroad, perhaps on the upper and lower slide rail device length control device can be set.

Length control device in the utility model diagonal cutting saw 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 railroad can use length control device in the utility model, 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 the utility model claim.

Diagonal cutting saw provided by the utility model can be arranged on saw in the different sliding stroke scopes with exact length, make diagonal cutting saw when the workpiece of cutting different in width, can select needed sliding stroke accurately, thereby when cut workpiece, can set the sliding stroke of saw according to the width of workpiece with respect to workbench, saved the time of cut workpiece, improved operating efficiency and operational comfort, helped on industry, applying.

Claims

1. bias cutter comprises being used for the workbench (2) of place work piece that described workbench (2) has front side (21) and the rear side (22) that limits first direction; Saw (6), wherein saw (6) is by railroad (5,5a, 5b, that 5c) slides on first direction with respect to workbench (2) connects with workbench (2), described saw (6) comprise be used for cut workpiece saw blade (61) and drive described saw blade (61) motor rotating (62), it is characterized in that: be provided with between described saw (6) and the workbench (2) make described saw (6) with respect to described workbench (2) have several fixedly the length control device of sliding stroke (7,7a).

2. bias cutter as claimed in claim 1, it is characterized in that: described railroad (5,5a, 5b, 5c) comprise the guide rail (51 that connects with workbench (2), 51a, 51b, 51c), described length control device (7a) comprise with respect to saw (6) and workbench (2) the two one of the scale assembly (75) that fixedly installs and the stop part (76) that fixedly installs with respect to the two another one of saw (6) and workbench (2), described scale assembly (75) comprises rod support (751), pass rod support (751) can along guide rail (51,51a, 51b, the jig (752) that 51c) moves on the longitudinally and offset with described stop part (76).

3. bias cutter as claimed in claim 2 is characterized in that: described scale assembly (75) also wrap be installed in rod support (751) go up with jig (752) with respect to rod support (751) be fixed on several positions locking member (753).

4. bias cutter as claimed in claim 3 is characterized in that: described locking member (753) is a screw.

5. bias cutter as claimed in claim 2 is characterized in that: an end of described jig (752) is provided with butting section (755), and described butting section (755) offset with described stop part (76).

6. bias cutter as claimed in claim 2 is characterized in that: described jig (752) be shaped as T-shape.

7. bias cutter as claimed in claim 2, it is characterized in that: be connected with support (4) on the described workbench (2), described guide rail (51) is fixedly mounted on the support (4), described railroad (5) also comprises the sliding sleeve (52) that slidably is installed on the guide rail (51), described saw (6) be connected that sliding sleeve (52) is gone up and can and sliding sleeve (52) slide with respect to workbench (2) along guide rail (51) together, described scale assembly (75) be arranged on support (4) and sliding sleeve (52) the two one of on, described stop part (76) is arranged on the two the another one of support (4) and sliding sleeve (52).

8. bias cutter as claimed in claim 2, it is characterized in that: it is characterized in that: be connected with support (4a) on the described workbench (2), described guide rail (51a) slidably is installed on the support (4a), described saw (6) be connected that guide rail (51a) is gone up and can and guide rail (51a) slide with respect to workbench (2) together, described scale assembly (75) be arranged on support (4a) and guide rail (51a) the two one of on, described stop part (76) is arranged on the two the another one of support (4a) and guide rail (51a).

9. bias cutter as claimed in claim 2, it is characterized in that: described guide rail (51b) slidably is connected with workbench (2), support (4b) is installed on the described guide rail (51b), described saw (6) is installed on the support (4b) and along with support (4b) and guide rail (51b) slide with respect to workbench (2) together, described scale assembly (75) be arranged on workbench (2) and guide rail (51b) the two one of on, described stop part (76) is arranged on the two the another one of workbench (2) and guide rail (51b).

10. bias cutter as claimed in claim 2, it is characterized in that: described guide rail (51c) is fixedlyed connected with workbench (2), described railroad (5c) also comprises the sliding sleeve (52c) that slidably is installed on the guide rail (51c), support (4c) is installed on the described sliding sleeve (52c), described saw (6) is installed on the support (4c) and along with support (4c) and sliding sleeve (52c) slide with respect to workbench (2) along guide rail (51c) together, described scale assembly (75) be arranged on workbench (2) and sliding sleeve (52c) the two one of on, described stop part (76) is arranged on the two the another one of workbench (2) and sliding sleeve (52c).