CN103372680A

CN103372680A - Circular saw

Info

Publication number: CN103372680A
Application number: CN2012101282627A
Authority: CN
Inventors: 陈荣火
Original assignee: Rexon Industrial Corp Ltd
Current assignee: Rexon Industrial Corp Ltd
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2013-10-30
Anticipated expiration: 2032-04-27
Also published as: CN103372680B

Abstract

The invention relates to a circular saw which comprises a base, a sliding platform and a saw cutting device, wherein the sliding platform comprises at least a sliding rod and a fixed seat; the sliding rod is movably arranged on the base in a penetrating manner; the fixed base is fixed at one end of the sliding rod and defines a reference surface; the saw cutting device comprises a saw arm pivoted with the fixed seat and a saw web pivoted with the saw arm, so that the saw web can be driven by the saw arm to move up and down between a lowest position and a highest position, with respect to the base; when the saw web is located at the lowest position, the saw web and the reference surface of the fixed seat are intersected or tangential. Therefore, the circular saw can achieve the effects of reducing material volume, reducing swinging and improving precision.

Description

Circular sawing machine

Technical field

The present invention is relevant with circular sawing machine, refers to especially a kind ofly reduce the volume of timber, reduce and to rock, and carries high-precision circular sawing machine.

Background technology

The U.S. announces US5,241, No. 888 and disclose No. 2007/0163409 Patent Case and expose respectively a kind of sliding circular sawing machine, all has excessive the reaching of the volume of timber and rock easily in use and affect the problem of cutting precision in the design of aforementioned two Patent Cases.In details of the words, aforementioned saw cutting device must keep under the limit sawing stroke, the sliding bar sliding stroke length of sliding stand must be certain, add from the extended saw arm length of sliding stand front end, when yet extended saw arm length is long, workbench is bound to such an extent that increase dimensioned area for the stroke that cooperates saw cutting device and the length of itself saw arm, just can offer the enough support effects of workpiece, but the result who increases dimensioned area but can cause the increase of the whole volume of timber and then increase transportation and storage cost; On the other hand, because the arm of force difference in length of saw cutting device is to depend on the distance of stretching out from sliding stand, yet in aforementioned two Patent Cases, all have no idea effectively to shorten this segment distance, therefore, saw cutting device is easy in use because the long arm of force produces than the rocking of long arc, and then the related sawing precision that affects.

Summary of the invention

Main purpose of the present invention is to provide a kind of circular sawing machine, and it can reduce the volume of timber, and can reduce the problem of rocking that produces in use, increases simultaneously the sawing precision.

In order to reach above-mentioned purpose, circular sawing machine of the present invention includes a pedestal, a sliding stand, and a saw cutting device.This sliding stand has at least one sliding bar and a holder, this sliding bar can be arranged in this pedestal with moving axially, this holder has an anchor portion and is fixed in an end of this sliding bar with this anchor portion, so that this holder can be subjected to the drive of this sliding bar and move relative to this pedestal; This saw cutting device has the saw blade that a saw arm and that is hubbed at this holder is hubbed at this saw arm, so that this saw blade can be subjected to this saw arm drive and in up and down start of relative this pedestal between an extreme higher position and the extreme lower position, wherein, the anchor portion of the holder of this sliding stand defines a datum level at the leading section towards this saw blade, this saw blade when this extreme lower position can and this datum level between form to intersect or tangent, so can reach and reduce the volume of timber, reduce the problem of rocking and promote the purpose of precision.

Secondary objective of the present invention is to provide a kind of circular sawing machine, and it can promote the smooth degree of start.

In order to reach above-mentioned purpose, circular sawing machine of the present invention also provides a holding protective cover device, include a protecting cover, a supporting seat and a connecting rod, this protecting cover is hubbed at this saw arm and cover is established this saw blade, this supporting seat is located at the end face of this holder and is had a guide groove and a contact groove, and an end of this connecting rod is hubbed at this protecting cover, and the other end of this connecting rod has a guidance part and a top, this guidance part is embedded in this guide groove slippingly, and this top is embedded in this contact groove slippingly.Thus, when this saw blade is switched to this extreme lower position from this extreme higher position, this protecting cover can be subjected to this connecting rod drive and relatively this saw blade pivot, this saw blade is exposed, in order to reach smoothly purpose of start.

Description of drawings

Fig. 1 is the plane of a preferred embodiment of the present invention, shows that mainly saw blade is positioned at the state of extreme higher position.

Fig. 2 to Fig. 3 is the plane of a preferred embodiment of the present invention, shows that mainly saw blade deflects to the state of extreme lower position from the extreme higher position.

Fig. 4 is the plane of a preferred embodiment of the present invention, mainly shows the state of the relative movable workbench of saw cutting device.

The main element symbol description

10 circular sawing machines, 20 pedestals

22 bracing frames, 30 sliding stands

32 sliding bars, 34 holders

342 anchor portion, 344 leading sections

346 rearward end P datum levels

PR back plane 348 extensions

40 saw cutting devices, 42 saw arms

44 saw blade R saw blade radiuses

46 rotating shafts of 442 axles

P1 extreme higher position P2 extreme lower position

L1 horizontal range L2 horizontal range

L3 horizontal range 50 holding protective cover devices

51 protecting covers, 52 supporting seats

53 connecting rods, 54 guide grooves

55 contact grooves, 56 first tilting sections

57 second tilting sections, 58 guidance parts

59 tops

The specific embodiment

In order to describe structure of the present invention, feature and effect place in detail, hereby enumerate a preferred embodiment and cooperate following graphic explanation as after.

See also Fig. 1, be the circular sawing machine 10 that a preferred embodiment of the present invention provides, include a pedestal 20, a sliding stand 30, a saw cutting device 40, and a holding protective cover device 50.

Pedestal 20 is set up on desktop or other supporting surface, uses for workpiece and puts, and a rear end of pedestal 20 arranges a bracing frame 22, and bracing frame 22 is extended towards the top by pedestal 20.

Sliding stand 30 has at least one sliding bar 32 and a holder 34.Sliding bar 32 can along itself be arranged in bracing frame 22 on the pedestal 20 with moving axially so that sliding stand 30 can be with respect to the predetermined stroke of bracing frame 22 linear slide one, to reach a predetermined sawing stroke; Holder 34 has an anchor portion 342 and an extension 348, the anchor portion 342 of holder 34 is fixed in an end of sliding bar 32, so that holder 34 can be subjected to the drive of sliding bar 32 and move relative to pedestal 20, in addition, the anchor portion 342 of holder 34 has a leading section 344 and a rearward end 346, define a datum level P at the leading section 344 away from sliding bar 32, datum level P in fact perpendicular to sliding bar 32 axially, and defining a back plane PR in anchor portion 342 in the rearward end 346 near sliding bar 32, back plane PR essence is parallel to datum level P; Extend away from the rearward end 346 of anchor portion 342 with the axial direction court that is roughly prolonging sliding bar 32 backward extension 348 self-retaining ends 342.

Saw cutting device 40 has a saw arm 42 and a saw blade 44.Saw arm 42 is hubbed at the extension 348 of holder 34 by a rotating shaft 46, and rotating shaft 46 is positioned at the rear of the back plane PR of anchor portion 342; Saw blade 44 has Radius R, and by an axle 442 be hubbed at saw arm 42 and the drive that can be subjected to saw arm 42 in the up and down start of datum level P of relative holder 34 between an extreme higher position P1 and the extreme lower position P2, simultaneously, saw blade 44 is adopted suitable configuration with the relative position of holder 34, both are interfered in unlikely generation, when saw blade 44 is positioned at extreme higher position P1, as shown in Figure 1, can form between saw blade 44 and the datum level P and intersect, when saw blade 44 is positioned at extreme lower position P2, as shown in Figure 3, saw blade 44 can form crossing with datum level P, at this moment, axle 442 to rotating shaft 46 has a horizontal range L1, and rotating shaft 46 has a horizontal range L2 to datum level P, datum level P has a horizontal range L3 to axle 442, the pass of three's horizontal range is L3=L1-L2, and namely datum level P equals axle 442 to the horizontal range L3 of axle 442 and deducts rotating shaft 46 to the horizontal range L2 of datum level P to the horizontal range L1 of rotating shaft 46, and namely L3 is less than the saw blade radius R.Also can design and make L3 equal the saw blade radius R, then can form tangent between saw blade 44 and the datum level P.

Holding protective cover device 50 has a protecting cover 51, a supporting seat 52 and a connecting rod 53.Protecting cover 51 is hubbed at saw arm 42 and cover is established saw blade 44; Supporting seat 52 is located at the end face of holder 34 and is had a guide groove 54 and a contact groove 55, guide groove 54 is strip, contact groove 55 has one first tilting section 56 and one second tilting section 57, the first tilting section 56 by the direction of a relative convergence datum level P towards away from the direction of datum level P obliquely toward downward-extension, the second tilting section 57 is communicated with this first tilting section 56, and from the bottom of the first tilting section 56 by relatively away from the direction of this datum level P towards near the direction of datum level P obliquely toward downward-extension; One end of connecting rod 53 is hubbed at protecting cover 51, and the other end of connecting rod 53 stretches out a guidance part 58 and a top 59 integratedly from the one side, and guidance part 58 wherein is embedded in the guide groove 54 slippingly, and top 59 is embedded in the contact groove 55 slippingly.

Before use, as shown in Figure 1, saw blade 44 is positioned at extreme higher position P1, and the top 59 of the connecting rod 53 of this moment is positioned at the top of the first tilting section 56 of contact groove 55.When user's wish is used, with saw arm 42 to pressing down towards pedestal 20 convergences, when saw blade 44 be subject to saw arm 42 drive and during from extreme higher position P1 towards extreme lower position P2 deflection, as shown in Figure 2, top 59 meetings of connecting rod 53 move down along the medial surface of the first tilting section 56 of

contact groove

55,58 of the guidance parts of connecting rod 53 are backward mobile along guide groove 54, contact between the top 59 of connecting rod at this moment 53 meeting utilizations itself and the first tilting section 56 of contact groove 55 concerns to produce the strength of pulling protecting cover 51, the part that allows the relative saw blade 44 of protecting cover 51 beginnings pivot and to allow saw blade 44 increases expose.

When saw arm 42 continues to deflect down, top 59 meetings of connecting rod 53 move down along the medial surface of the second tilting section 57 of contact groove 55, and the contact relation between the second tilting section 57 of simultaneously maintenance and contact groove 55, the angle that allows protecting cover 51 relative saw blades 44 pivot so that connecting rod 53 will continue to spur protecting cover 51 is larger, the part that saw blade 44 exposes is also just more, when the top 59 of connecting rod 53 is positioned at the bottom of the second tilting section 57 of contact groove 55, as shown in Figure 3, saw blade 44 is positioned at extreme lower position P2 and forms crossing with the datum level P of holder 34, the saw cutting device 40 of this moment can see through sliding bar 32 and move relative to pedestal 20, when the least significant end of running saw cutting apparatus 40 to the sawing stroke, rearward end 346 essence of the anchor portion 342 of holder 34 are against the bracing frame 22 of pedestal 20 at this moment, by exposing partly of saw blade 44 workpiece is carried out sawing processing as shown in Figure 4, and in mobile process.

Thus, the design of circular sawing machine 10 of the present invention can allow saw cutting device 40 shorten the distance of stretching out from sliding stand 30 under identical sawing stroke, so can effectively reduce the whole volume of timber and arm of force contraction in length and reduce the problem of rocking that produces when using, in order to reach the effect that increases the sawing precision.In addition, the connecting rod 53 that circular sawing machine 10 of the present invention provides has guidance part 58 and top 59 simultaneously, so that the guidance part 58 of connecting rod 53 and top 59 can be simultaneously along with connecting rod 53 relative supporting seat 52 beats, thereby can cooperate very swimmingly the guide groove 54 of supporting seat 52 and contact groove 55 to spur protecting cover 51 generation pivots, to reach the purpose that increases the start smoothness.

The above, only be detailed description and the diagram of preferred embodiment of the present invention, all closing in the embodiment of the spirit variation similar with it of claim scope of the present invention, all be contained in the category of the present invention, anyly be familiar with this skill person in the field of the invention, can think easily and variation or modify and all can be encompassed in claim of the present invention.

Claims

1. a circular sawing machine is characterized in that, includes:

One pedestal;

One sliding stand, have at least one sliding bar and a holder, this sliding bar can be along itself be arranged in this pedestal with moving axially, this holder has an anchor portion, this anchor portion is fixed in an end of this sliding bar, so that this holder can be subjected to the drive of this sliding bar and move relative to this pedestal, and the anchor portion of this holder defines a datum level at the leading section away from this sliding bar; And

One saw cutting device, have a saw arm and a saw blade, this saw arm is hubbed at this holder, this saw blade be hubbed at this saw arm and the drive that can be subjected to this saw arm in up and down start of relative this datum level between an extreme higher position and the extreme lower position, when this saw blade was positioned at this extreme lower position, this saw blade and this datum level formed crossing or tangent.

2. circular sawing machine as claimed in claim 1, it is characterized in that, the anchor portion of this holder has a leading section and a rearward end, this leading section is away from this sliding bar and define this datum level, this datum level in fact perpendicular to sliding bar axially, this rearward end is near this sliding bar and define a back plane, and this back plane essence is parallel to this datum level.

3. circular sawing machine as claimed in claim 2 is characterized in that, the holder of this sliding stand has an extension, and this extension is roughly prolonging the axial direction of this sliding bar towards extend away from this rearward end backward from this anchor portion; This saw arm is hubbed at the extension of this holder by a rotating shaft, and this rotating shaft is positioned at the rear of this back plane.

4. circular sawing machine as claimed in claim 3, it is characterized in that, this saw blade has Radius R, and be hubbed at this saw arm by an axle, this axle to this rotating shaft has a horizontal range L1, and this rotating shaft to this datum level has a horizontal range L2, and this datum level to this axle has a horizontal range L3, pass between the described horizontal range is L3=L1-L2, and L3≤R.

5. circular sawing machine as claimed in claim 1, it is characterized in that, also include a holding protective cover device, it has a protecting cover, a supporting seat and a connecting rod, and this protecting cover is hubbed at this saw arm and cover is established this saw blade, and this supporting seat is located at the end face of this holder and is had a guide groove and a contact groove, one end of this connecting rod is hubbed at this protecting cover, the other end of this connecting rod has a guidance part and a top, and this guidance part can be embedded in this guide groove slippingly, and this top can be embedded in this contact groove slippingly; When this saw blade is switched to this extreme lower position from this extreme higher position, this protecting cover can be subjected to this connecting rod drive and relatively this saw blade pivot, this saw blade is exposed.

6. circular sawing machine as claimed in claim 5 is characterized in that, a side of this connecting rod stretches out this guidance part and this top integratedly.

7. circular sawing machine as claimed in claim 5, it is characterized in that, this contact groove has one first tilting section and one second tilting section, this first tilting section towards away from the direction of this datum level obliquely toward downward-extension, this second tilting section from the bottom of this first tilting section towards near the direction of this datum level obliquely toward downward-extension; When this saw blade was positioned at this extreme higher position, the top of this connecting rod was positioned at the top of the first tilting section of this contact groove, and when this saw blade was positioned at this extreme lower position, the top of this connecting rod was positioned at the bottom of the second tilting section of this contact groove.