CN104108096A - Method for feeding and scribing right-angle profile of angle iron type and method for cutting right-angle profile of angle steel type - Google Patents
Method for feeding and scribing right-angle profile of angle iron type and method for cutting right-angle profile of angle steel type Download PDFInfo
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- CN104108096A CN104108096A CN201310554154.0A CN201310554154A CN104108096A CN 104108096 A CN104108096 A CN 104108096A CN 201310554154 A CN201310554154 A CN 201310554154A CN 104108096 A CN104108096 A CN 104108096A
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Abstract
The invention discloses a method for feeding and scribing angle steel. The method includes scribing a straight line AM perpendicular to a ridge line of the angle steel in a plane of a first straight plane of the angle steel and near end sides of the angle steel; taking a point M' on the straight line AM; drawing a straight line M'K passing the point M' to be parallel to the ridge line of the angle steel; taking the point M' as a first start point, taking the length /0.5a on the straight line M'K in the direction away from the end side of the angle steel, acquiring the point N', wherein the a is the length of the AM'; connecting the point A and the point N' by a straight line and extending the straight line to a sideline of the first straight plane to obtain an intersection point N of the straight line AN' and an end line, opposite to the ridge line, of the first straight plane of the angle steel, namely a first cutting point, wherein the AN is a first cutting line; acquiring a second cutting point L and a second cutting line AL of a second straight plane of the angle steel by the same method. Via the method, feeding and cutting lines of the angle steel can be quickly scribed.
Description
Technical field
The present invention relates to angle steel process field, relate in particular to angle steel class right angle cutting of material scribble method and angle steel class right angle section bar cutting method.
Background technology
In practice, conventionally section bar end, the angle steel class right angle fastening of two certain specifications need to be spliced into right angle ridge 90 degree frameworks outwardly.As shown in Figure 1, it shows the angle steel of two certain specifications (for example length of side is 30mm) end is fastened and is spliced into the right angle ridge situation of 90 degree when framework outwardly.But two angle steel are after line cutting, easily occur dehiscing at joint line place (i.e. gap is spliced in existence), as shown in Figure 2, maximum place has 10mm gap unexpectedly.Even if adopt the method for amplifying sample, mark accurate blanking line of cut also not easily, may consume many man-hours on the one hand, slightly careless in amplification sample overall process on the other hand, just there will be error, in the time of angle splice joint, also may produce subtended angle phenomenon (, the angle of the stitching portion of two angle steel is greater than 90 degree), as shown in Figure 3.
Therefore need to find a kind of not only easy, fast, but also accurate, practical angle steel class right angle cutting of material scribble method.
Summary of the invention
In view of the above problems, the present invention has been proposed to a kind of angle steel class right angle cutting of material scribble method that overcomes the problems referred to above or address the above problem at least in part and angle steel class right angle section bar cutting method are provided.
According to one aspect of the present invention, a kind of angle steel class right angle cutting of material scribble method is provided, the method comprises: the straight line AM in the plane of the first straight plane of angle steel class right angle section bar, at the distolateral picture near angle steel class right angle section bar perpendicular to the ridge line of angle steel class right angle section bar, wherein A is positioned on the ridge line of angle steel class right angle section bar, and M is positioned on the sideline of the first straight plane of angle steel class right angle section bar; On described straight line AM, get 1 M '; Be the straight line M ' K of the ridge line that is parallel to angle steel class right angle section bar through a M '; Taking a M ' as starting point, in the direction distolateral away from angle steel class right angle section bar, measure on straight line M ' K
length, obtain some a N ', wherein a is the length of A M '; And with straight line tie point A and some N ' and extend to the sideline of the first straight plane of angle steel class right angle section bar, obtain the intersection point N in straight line A N ' and the sideline of the first straight plane of angle steel class right angle section bar, i.e. the first cut point, AN is the first line of cut.
Alternatively, in above-mentioned angle steel class of the present invention right angle cutting of material scribble method, the second cut point L of the second straight plane of described angle steel class right angle section bar and the second line of cut AL adopt with the first cut point N of the first straight plane and the same method of the first line of cut AN that obtain angle steel class right angle section bar and obtain, or adopt with the following method and obtain: in the second straight plane of angle steel class right angle section bar, draw the straight line perpendicular to the ridge line of angle steel class right angle section bar through an A, on this straight line, intercept AJ '=A M ', obtain some J '; Be parallel to the straight line J ' K ' of the ridge line of angle steel class right angle section bar through a J ' work; Taking an A as the center of circle, taking an AN ' as radius, with the picture camber line of planing, describedly plan crossingly with straight line J ' K ', obtain a L ', tie point A and some L ' also extend with the sideline of the second straight plane of angle steel class right angle section bar crossing, obtain a L, obtain the second line of cut AL.
According to another aspect of the present invention, a kind of angle steel class right angle section bar cutting method is provided, and it comprises: obtain the first line of cut AN of the first straight plane of angle steel class right angle section bar and the second line of cut AL of the second straight plane of angle steel class right angle section bar according to aforementioned angle steel class right angle cutting of material scribble method; And during along the first line of cut AN and/or the second line of cut AL cutting, the cut surface forming after cutting appliance cutting is positioned in the plane at △ NANL place with cutting appliance.
Alternatively, in above-mentioned angle steel class of the present invention right angle section bar cutting method, described with cutting appliance during along the first line of cut AN and/or the second line of cut AL cutting, the step that the cut surface that makes to form after cutting appliance cutting is positioned in the plane at △ ANL place comprises: on first line of cut of the first straight plane of described angle steel class right angle section bar and the second line of cut of the second straight plane of angle steel class right angle section bar, get respectively n point, n on the first line of cut AN puts N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2..., L
n, and AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n; With cutting appliance along the first line of cut AN, the first straight plane of starting to cut angle steel class right angle section bar from a N, when cutting appliance during at some N place the cut direction of cutting appliance point to a some L; Cutting appliance is at a N
n-1, the cut direction of cutting appliance is pointed to some L when at the place
n-1, by that analogy, cutting appliance is at a N
1, the cut direction of cutting appliance is pointed to some L when at the place
1, until be cut to an A; With cutting appliance along the second line of cut AL, the second straight plane of starting to cut angle steel class right angle section bar from a L, when cutting appliance during at some L place the cut direction of cutting appliance point to a some N; Cutting appliance is at a L
n-1, the cut direction of cutting appliance is pointed to some N when at the place
n-1, by that analogy, cutting appliance is at a L
1, the cut direction of cutting appliance is pointed to some N when at the place
1, until be cut to an A.
Alternatively, in above-mentioned angle steel class of the present invention right angle section bar cutting method, described with cutting appliance during along the first line of cut AN and/or the second line of cut AL cutting, the step that the cut surface that makes to form after cutting appliance cutting is positioned in the straight plane at △ ANL place comprises: on first line of cut of the first straight plane of described angle steel class right angle section bar and the second line of cut of the second straight plane of angle steel class right angle section bar, get respectively n point, n on the first line of cut AN puts N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2..., L
n, and AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n; Cut harmful utensil from A point, and towards straight line N
1l
1, or towards a N
1with a L
1the first and second straight planes of direction cutting angle steel class right angle section bar, when being cut to a N
1with a L
1time, cutting appliance is towards straight line N
2l
2, or towards a N
2, or towards a L
2cutting, by that analogy, until be cut to a N, some L; Or cutting appliance cuts the first straight plane of angle steel class right angle section bar since the first line of cut AN, cutting appliance is towards the second line of cut AL or the point on it; Or the first and second straight planes that cutting appliance cuts angle steel class right angle section bar since the first cut point N and the second cut point L, along the first line of cut AN and the second line of cut AL simultaneously, cutting appliance is towards a L
n-1or towards a N
n-1; When being cut to a L
n-1with a N
n-1time, cutting appliance is towards a L
n-2or towards a N
n-2; By that analogy, until be cut to an A.
Utilize angle steel class of the present invention right angle cutting of material scribble method can simply, efficiently, accurately mark the blanking line of cut of angle steel class right angle section bar, can be by the work that need to spend just can complete for one, two hour by conventional method, shorten to once, can complete in two minutes, and greatly improved precision.In addition, utilize angle steel class of the present invention right angle section bar cutting method, can cut out the angle steel class right angle section material section that is suitable for being spliced into an angle of 90 degrees.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of description, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by the specific embodiment of the present invention.
Brief description of the drawings
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skill in the art.Accompanying drawing is only for the object of preferred embodiment is shown, and do not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 shows that prior art medial end portions fastens, two angle steel that are stitched together and the schematic diagram of the 90 degree frameworks that form; Fig. 2 and Fig. 3 show two kinds of possible situations of in prior art, two angle steel after the blanking line of cut cutting of the angle steel along adopting common amplification quadrat method to mark being spliced to rear appearance;
Fig. 4 shows the flow chart of angle steel class right angle cutting of material scribble method according to the embodiment of the present invention;
Fig. 5 shows the diagram that utilizes angle steel class of the present invention right angle cutting of material scribble method to mark blanking line of cut on angle steel;
Fig. 6 shows the first line of cut based on marking, adopt the diagram of the second line of cut that marks angle steel of planing;
Fig. 7 shows the schematic diagram that draws angle steel class of the present invention right angle cutting of material scribble method;
Fig. 8 and Fig. 9 show respectively a kind of special case of angle steel class of the present invention right angle cutting of material scribble method;
Figure 10 shows and works as
the method of a kind of blanking line of cut that marks angle steel class right angle section bar while getting approximation 0.7a;
Figure 11 shows the cut direction that while adopting angle steel class of the present invention right angle section bar cutting method to cut, cutting appliance should keep;
Figure 12 shows the schematic diagram that uses cutting torch cutting angle steel;
Figure 13 mono-Figure 15 shows the schematic diagram that uses handsaw cutting angle steel.
Detailed description of the invention
Exemplary embodiment of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown exemplary embodiment of the present disclosure in accompanying drawing, but should be appreciated that and can realize the disclosure and the embodiment that should do not set forth limits here with various forms.On the contrary, it is in order more thoroughly to understand the disclosure that these embodiment are provided, and can be by the those skilled in the art that conveys to complete the scope of the present disclosure.
In following embodiment of the present invention, mainly taking angle steel as example illustrates angle steel class of the present invention right angle cutting of material scribble method and angle steel class right angle section bar cutting method, but of the present invention being not limited to for angle steel, can such as, for the right angle section bar of other material of angle steel class, aluminium alloy, plastic-steel etc.In addition, in following embodiment of the present invention, mainly taking uniform thickness angle steel and equal leg angle as example illustrates method of the present invention, but the present invention is not limited to for uniform thickness angle steel and equal leg angle, can be for not uniform thickness angle steel, unequal angle etc.
In the time making some frameworks with angle steel, usually need two angle steel ends to cut, so that can fastening, two angle steel ends are spliced into ridge right angle frame outwardly.But, due to two angle steel jointing lines and corresponding four limits not in one plane, but in a specific locus, so it is not so simple to mark the accurate blanking cutting money of angle steel, must require its particular spatial location to take into account according to angle.In the time adopting amplification quadrat method to solve, because the condition of working site is limit, by the time while obtaining line of cut, may oneself many man-hours have been consumed, in addition, if slightly careless in amplification sample overall process, just there will be error, like this, in the time of angle splice joint, also may produce dehisce (as shown in Figure 2) or subtended angle (as shown in Figure 3) phenomenon.
For this reason, the present invention proposes a kind of angle steel class right angle cutting of material scribble method.Before describing method of the present invention, first the title of the each several part to angle steel class right angle section bar defines, and as shown in Figure 5, angle steel class right angle section bar has two straight plane A ' BEF and A ' CDF, the intersection of two straight planes is called the ridge line of angle steel class right angle section bar, i.e. line A ' F.For the each straight plane of angle steel class right angle section bar, the side crossing with the ridge line of angle steel class right angle section bar is called the end line of straight plane, be line A ' B, line A ' C, line EF and line DF, the side relative with the ridge line of angle steel class right angle section bar is called the sideline of straight plane, i.e. line BE and line CD.
Below as an example of angle steel example, specifically introduce angle steel class of the present invention right angle cutting of material scribble method in conjunction with Fig. 4 and Fig. 5.Fig. 4 shows the flow chart of angle-steel blanking scribble method according to the embodiment of the present invention; Fig. 5 shows the angle-steel blanking scribble method utilizing shown in Fig. 4 and marks on angle steel the diagram of blanking line of cut.As shown in Figure 4, method of the present invention starts from step S410, at step S410, and the straight line AM in the plane of the first straight plane of angle steel, at the distolateral picture near angle steel perpendicular to the ridge line of angle steel, wherein A is positioned on the ridge line of angle steel, and M is positioned on the sideline of the first straight plane of angle steel.For example, as shown in Figure 5, it is upper that A is positioned at the ridge line A ' F of angle steel, and M is positioned on the sideline BE of first straight plane A ' BEF of angle steel.
Next,, at step S420, on straight line AM, get 1 M '.
Next,, at step S430, be the straight line M ' K of the ridge line that is parallel to angle steel through a M '.
Next, at step S440, taking a M ' as starting point, in the direction distolateral away from angle steel, measure on straight line M ' K
length, obtain some a N ', wherein a is the length of A M '.Here,
can get numerical approximation 0.7071a, 0.707a or 0.7a according to the requirement of accuracy.
Next, at step S450, with straight line tie point A and some N ' and extend to the sideline of the first straight plane of angle steel, obtain the intersection point N in straight line A N ' and the sideline of the first straight plane of angle steel, i.e. the first cut point, AN is the first line of cut.
By above-mentioned steps S410 to S450, obtain the first line of cut AN of angle steel the first straight plane.
In described method, also can get a M ' and overlap with some M in the above.
As shown in Figure 5, the sideline of two straight planes of angle steel (being line BE and line CD) locates to be all small circle arcuation, and therefore, in practice, 2 of M and N are difficult for accurately location, so line of cut is definite error that naturally easily produces of line AN.In addition, the not necessarily flat shape of rule of the end of angle steel sometimes, because the reason such as collide with produces distortion etc., this location for A ' is also inaccurate, and these all can affect and mark exactly line of cut.But adopt the method shown in Fig. 4 of the present invention and Fig. 5, because A point has moved some distances from the end line of the first straight plane of angle steel in plane inner side, in M ' the first straight plane that is taken at angle steel but not on the line of the first straight plane of angle steel, thereby be not orthogonal under the situation of ridge line of angle steel and/or the sideline of the straight plane of angle steel is not parallel under the situation of ridge line of angle steel and can marks quickly and accurately line of cut even if make at the end line of the straight plane of angle steel.
Alternatively, the ridge line that can get angle steel is an A at end points distolateral described in angle steel, then mark line of cut according to the method shown in Fig. 4 and Fig. 5, in this way, under the situation of angle steel end comparison rule, can save a part of angle steel material, but this method, because A point location differs very definitely surely, especially for example,, in the case of the irregular shape of distolateral appearance (waveform) of angle steel, can affect to a certain extent the accuracy that marks blanking line of cut.
In addition, when the end line of the straight plane of angle steel is during perpendicular to the ridge line of angle steel, the ridge line that can get angle steel for a some A, is got a M ' at this distolateral end points on angle steel end line, gets a M and be the sideline of straight plane of angle steel at end points distolateral described in angle steel.Alternatively, also can get a M ' and overlap with some M, as shown in Figure 8.
In addition, as shown in Figure 9, in the time of the sideline of straight plane of described angle steel and the ridge line parallel of angle steel, can get a M ' and overlap with some M, at this moment, the sideline of the straight plane of angle steel is straight line M ' K, and along the sideline of the described first straight plane, oneself puts M and measures
length, the some N ' obtaining, also i.e. the first cut point N.
In addition, when the end of angle steel comparison rule, be that sideline that the end line of the straight plane of angle steel is basically perpendicular to the ridge line of angle steel and the straight plane of angle steel is while being basically parallel to the ridge line of angle steel, in the less demanding situation of accuracy, method shown in Fig. 4 and Fig. 5 can be able to be simplified, as shown in Figure 8, in the first straight plane of angle steel, point A is positioned at the end points of the ridge line of angle steel, point M ' and some M overlap and be the sideline of straight plane of angle steel at same distolateral end points, certainly put M along the sideline of the first straight plane and measure
length can obtain a N, at this moment, some N ' overlaps with some N, thereby can mark very rapidly line of cut AN, in this case, can economize and reaches a M ', picture straight line M ' K and ask the step of the position of a N '.
For the second cut point L and the second line of cut AL of angle steel the second straight plane, also can obtain by the same method shown in above-mentioned Fig. 4 and Fig. 5.In addition, alternatively, also can adopt the method shown in Fig. 6 to obtain, as shown in Figure 6, in the second straight plane of angle steel, draw the straight line AJ perpendicular to the ridge line of angle steel through an A, on this straight line, intercept AJ '=A M ', obtain some J '; Be parallel to the straight line J ' K ' of the ridge line of angle steel through a J ' work; Taking an A as the center of circle, taking an AN ' as radius, with the picture camber line of planing, describedly plan crossingly with straight line J ' K ', obtain intersection point L ', tie point A is with some L ' and extend, crossing with the sideline of the second straight plane of angle steel, obtain a L, i.e. the second cut point, obtains the second line of cut AL.Method shown in Fig. 6 can be suitable for the angle steel of any kind, for example, and equal leg angle, unequal angle, uniform thickness angle steel or not uniform thickness angle steel.When angle steel is equal leg angle, and when the end comparison rule of angle steel, it is the ridge line that the end line of the straight plane of angle steel is basically perpendicular to angle steel, and when the sideline of the straight plane of angle steel is basically parallel to the ridge line of angle steel, in the less demanding situation of accuracy, method shown in Fig. 6 can be simplified, , taking an A as the center of circle, taking AN ' as radius (situation on the sideline of N ' be positioned at angle steel the first straight plane), with the picture camber line of planing, described planing is the second cut point L with the intersection point in the sideline of the second straight plane, tie point A and described the second cut point L can obtain the second line of cut AL.
Below specific explanations once angle-steel blanking scribble method of the present invention based on principle.
As shown in Figure 7, draw the full-size drawing of angle steel I and angle steel II, comprising drawing elevation and sectional drawing in the ratio of angle steel I and II actual size 1 to 1.Consider influence of wall thickness, need be as the criterion with angle steel outer wall, picture line chart, here suppose that angle steel I and angle steel II have desirable shape, that is, the sideline of angle steel is parallel to the ridge line of angle steel, and the end line of angle steel is perpendicular to the ridge line of angle steel, in derivation below, the physical length of the end line that a is angle steel.
In order to map conveniently, can first draw sectional drawing, and then draw elevation, the first half of Fig. 7 shows elevation, and the Lower Half of Fig. 7 shows sectional drawing.Particularly, set up rectangular coordinate system XOY, wherein O is the initial point of coordinate system, and OX is the transverse axis of rectangular coordinate system, and OY is the longitudinal axis of rectangular coordinate system.Next, make respectively the angular bisector of first quartile and fourth quadrant, on two angular bisectors, intercept out length of side OP and the OQ of angle steel by the length of side specification a of angle steel, obtain sectional drawing, as the diagram of the latter half of Fig. 7.Next, draw elevation according to projection relation, as the diagram of the first half of Fig. 7, wherein ABCD is the elevation of the 1st block of angle steel (being called angle steel I), ABEF is the elevation of the II piece angle steel (being called angle steel II) that will engage with angle steel I, the projection of angle steel I and angle steel II is congruent figures, that is, and and ABCD and ABEF congruence.AB line segment is the intersecting lens of two angle steel.The physical length that it has been generally acknowledged that AB line segment is the blanking line of cut of requirement, but in fact, the distance of AB line segment on figure, be not the length of actual blanking line of cut, because ABCD and ABEF are not the actual size of the straight plane of angle steel, but the straight plane of angle steel and the XOY plane perspective view on XOY plane when angled.
Next, according to the physical length of the elevation in Fig. 7 and sectional drawing calculating blanking line of cut.Here the main realistic regular way of rotation of using, with the O center of circle, does orphan taking OQ or OP as radius, and transverse cross axle OX, in K point, upwards draws the vertical line of transverse axis OX through some K, meet at N point with ME line segment in elevation, and tie point A and some N, obtain line segment AN.Length on the figure of this AN line segment is the physical length of intersecting lens AB, namely the physical length line of blanking line of cut.
If solved with putting large sample method, after obtaining the physical length line of above-mentioned blanking line of cut, just can intercept with planing AN length, taking AN length as radius, on angle steel, do lonely taking angle steel summit A as the center of circle, the sideline of angle of cut steel the first straight plane is in N point, and the some A on angle cleat and some N mark blanking line of cut on angle steel.But, do full-size drawing process trouble, mistake and take a lot of work, restricted by field condition, be not easy successfully to draw figure accurately and come.In addition, plan need to be on angle steel ridge line A point location, easily go out error, not easy to operate.In order to address these problems, increase work efficiency and quality, also need to proceed following derivation.
Ask the physical length AN of AB according to Fig. 7.Because the distance length of AN on Fig. 7 is exactly the physical length of the seam AB of angle steel I and angle steel II, ask the distance length of AN on Fig. 7 so just change into.In △ ABN, AN is the physical length value of wanting to ask.If calculate the length of AB line segment, BN line segment and the angle of ∠ ABN, just can use the cosine law to calculate the true length of AN.Concrete computational process is as follows:
First ask the distance length of AB on Fig. 7.Extend EB and hand over AD in G point, then connect PQ transverse cross coordinate in H point.Because OP is the angular bisector of first quartile, length equals the length of side a of angle steel end line, thus angle POH=45 °, OH=cos45 ° of a, i.e. OH=cos45 °
again according to ∠ AGB=90 °, AG=FE, DC=FE=GB=OH, can obtain
meanwhile, ∠ GAB and △ GBA are 45 °.Can calculate AB length on Fig. 7 by Pythagorean theorem or trigonometric function relation below.
Can obtain with Pythagorean theorem:
, then ask the length of BN next.Because
can be drawn by mapping process again: GN=OQ=OK=a, therefore,
?
, then ask ∠ ABN next.
∠ABN=180°-∠ABG=180°—45°=135°
Drawn by the cosine law:
After abbreviation, obtain
Thus, calculated the physical length AN of AB.But, although calculated the physical length of AB, but while line on angle steel, still exist the position of bad location, A point place, N ordering not difficult to find, easily go out the problems such as error, if can look for point location in two straight planes of angle steel from the sideline of angle steel two straight planes or directly, will handled easily, increase the degree of accuracy, as shown in Figure 6, A point is taken to the inboard of the end points of the ridge line of angle steel.For this reason, continue derivation below, further to try to achieve the physical length (at this moment supposing that MN is parallel to the ridge line of angle steel) of MN in Fig. 6.Specifically solve as follows:
Usually, in Fig. 6, ∠ AMN is right angle, and A point, M point, N point are three summits of flat square triangle △ AMN, wherein,
aM=α (α is the actual length of side of angle steel here), so, can calculate with Pythagorean theorem the length of MN.
In real work, conventionally can select as the case may be
approximation: 0.7071,0.707 or 0.7, in the time that 0.7071 can't meet the requiring of accuracy, available
as coefficient.General accurate is 0.7.Like this, MN just approximates 0.7071a, 0.707a or 0.7a.0.7071,0.707 or 0.7 is a constant coefficient, and a is the length of side of angle steel, determines according to the angle steel specification of selecting.
Trying to achieve MN length equals
result after, on angle steel, mark line of cut and just become simple and easy to operate.Describe as example to get 0.7, the operating process that marks line of cut on angle steel is: with one, Steel Ruler is directly measured on the sideline of the straight plane of angle steel to 0.7 numerical value that is multiplied by a taking M as starting point, make cut point N, by summit A and some N line, just can obtain easily meeting the line of cut AN that accuracy requires again.Due to here 0.7 be a constant, so angle-steel blanking scribble method of the present invention also can be called constant coefficient method.The method has overcome the deficiency of prior art method used.
In foregoing angle steel cutting method of the present invention, all need to use graduated ruler (as Steel Ruler etc.) to mark the blanking line of cut of angle steel because to measure in the appropriate position of angle steel by
the length numerical value calculating.But there is no rule, only having in a situation of planing, not high (in the accuracy requiring
get numerical approximation 0.7a) time, also can only mark line of cut with planing.Particularly, in practical operation, the length of 0.7a can obtain by the following method.As shown in figure 10, on straight line AM, get 1 M ', be the straight line M ' K of the ridge line that is parallel to angle steel through a M '; Next, in the straight plane of angle steel, draw arbitrarily a ray AC through some A; Next, taking an A as initial point, on ray AC, intercept continuously 10 any equal line segments, obtain successively respectively some A
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8, A
9, and A
0, the length of the line segment wherein intercepting on ray AC can be arbitrarily, engineering staff can select according to the hobby of oneself or convenience degree, in addition, for illustrate clear for the purpose of, 10 points getting on ray AC in Figure 10, have only indicated some A
7with an A
0, other 8 points are all not shown; Next, with straight line tie point M ' and some A
0, obtain straight line M ' A
0; Next, through A
7do and be parallel to M ' A
0straight line, obtain intersection point N crossing with AM '
0, AN
0length be 0.7a, a is the length of AM ' here.Then, taking a M ' as the first starting point, on straight line M ' K, measure AN in the direction distolateral away from angle steel
0length, obtain some a N '.Subsequently, as previously mentioned, with straight line tie point A and some N ' and extend to the sideline of the first straight plane of angle steel, obtain the intersection point N in straight line A N ' and the sideline of the first straight plane of angle steel, i.e. the first cut point, AN is the first line of cut.Use similar method, can obtain the second line of cut of the second straight plane of angle steel.Certainly, can adopt method that the use shown in prior figures 6 plans to obtain the second cut point and second line of cut of the second straight plane.
Scribble method shown in Figure 10 is that the derivation based on following obtains.
Because
here get
approximate 0.7a.M ' N ': a=7:10, again due to a=AM ', so M ' N ': AM '=7:10, so, only need the M ' N ' that proves that the scribble method shown in Figure 10 obtains: AM '=7:10 is correct with regard to the scribble method shown in provable Figure 10.Prove as follows:
(1) at conplane right angled triangle AA
7n
0with AA
0in M ', there is a common angles ∠ A; From mapping process, its hypotenuse A
0m ' and A
7n
0parallel to each other, so draw triangle AA
7n
0with AA
0m ' is two similar triangles.
(2) according to the character of similar triangles: corresponding sides are proportional, can obtain geometric ratio relational expression:
AN
0：AM′=AA
7：AA
0。
(3) from mapping process, A
1-A
9each point is line segment AA
0along ent, so can obtain geometric ratio relational expression:
AA
7：AA
0=7：10。
(4) by two geometric ratio relational expression simultaneous of deriving in aforementioned (2) and (3), can obtain new geometric ratio relational expression:
AN
0：AM′=7：10。
(5) again from mapping process, the length of M ' N ' equals AN
0length, so AN
0=M ' N '.By the geometric ratio relational expression in it substitution (4), obtain M ' N ': AM '=7:10.Pull line of cut at the outer wall from the straight plane of angle steel, need to cut angle steel along line of cut, at this moment, if do not consider the wall thickness impact of angle steel self, directly, according to conventional method cutting, produce " harelip " at angle steel seam crossing possibly,, only in angle steel, bark graft touches, and crust does not intersect, and causes the size of finished product to increase after assembly welding.Wall thickness is larger, and problem is more obvious.So when angle steel cutting, the wall thickness processing of angle steel is the problem of not avoiding.For this reason, the present invention proposes a kind of angle steel cutting method, and the method is mainly to adjust the angle of cutting appliance by when cutting, and the line of cut that the cutting part of cutting appliance is pointed in relative straight plane is realized.Particularly, angle steel cutting method of the present invention comprises: obtain the first line of cut AN of the first straight plane of angle steel and the second line of cut AL of the second straight plane of angle steel according to foregoing angle-steel blanking scribble method; Subsequently, along the first line of cut AN and/or the second line of cut AL cutting, make cutting appliance along cutting in the straight plane at △ ANL place as shown in figure 11 with cutting appliance.
Have multiplely for the cutter that cuts angle steel, conventionally can adopt cutting torch, handsaw, toothless saw etc.
When with cutting torch cutting angle steel, conventionally first start cutting from a straight plane of angle steel along line of cut, and the sideline side direction ridge line side of the first straight plane of angle steel (from) cuts conventionally from the bottom up.Figure 12 shows the schematic diagram that uses cutting torch cutting angle steel.As shown in figure 12, can on the second line of cut of straight the first line of cut of plane of first of described angle steel and the second straight plane of angle steel, get respectively n point, i.e. the point of n on the first line of cut AN N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2, L
n, wherein AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n.These points can actual be marked on the line of cut of angle steel, so that cutting personnel can be clear that, alternatively, cutting personnel also can go out according to the empirical estimating of oneself position of these points, are marked clearly and not be used on the line of cut of angle steel.Subsequently, when along the first line of cut AN cutting, first cutting torch starts to cut the first straight plane of angle steel from a N, at this moment makes cutting nozzle point to L point; When cutting torch is at a N
n-1, make cutting nozzle point to L when at the place
n-1point, by that analogy, when cutting torch is at a N
1, make cutting nozzle point to L when at the place
1point, until be cut to an A.Then, the second straight plane along the second line of cut AL cutting angle steel with same method.Particularly, cutting torch starts from a L, at this moment makes cutting nozzle point to some N; When cutting torch is at a L
n-1, make cutting nozzle point to some N when at the place
n-1, by that analogy, when cutting torch is at a L
1, make cutting nozzle point to N when at the place
1point, until be cut to an A.
In addition, also can adopt handsaw cutting angle steel.When with handsaw cutting angle steel, can start from the some A of the ridge line side of angle steel, the while is along two lines of cut cuttings of two straight planes of angle steel.As shown in figure 13, particularly, with the same shown in Figure 12, can on the second line of cut of straight the first line of cut of plane of first of described angle steel and the second straight plane of angle steel, get respectively n point, i.e. the point of n on the first line of cut AN N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2, L
n, wherein AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n.These points can actual be marked on the line of cut of angle steel, so that cutting personnel can be clear that, alternatively, cutting personnel also can go out according to the empirical estimating of oneself position of these points, are marked clearly and not be used on the line of cut of angle steel.Subsequently, start cutting from an A, handsaw is towards straight line N
1l
1, or towards a N
1with a L
1the first and second straight planes of cutting angle steel, thus handsaw is cut along △ ANL plane.When handsaw is cut to a N
1, some L
1time, handsaw is towards N
2l
2or towards a N
2or towards a L
2cutting, thus make handsaw keep cutting along △ ANL plane.By that analogy, when handsaw is cut to a L
n, some L
ntime, handsaw, towards straight line NL or towards a N or towards a L cutting, until be cut to a N, some L, cuts complete.
Alternatively, in the time using handsaw cutting angle steel, also can be first start cutting from the line of cut of a straight plane of angle steel.For example, as shown in figure 14, first, since the second line of cut AL cutting, at this moment handsaw should (for example be put N towards the first line of cut AN or a point on the first line of cut AN
1) cut, thereby make handsaw in the time of the second straight plane along the second line of cut AL cutting angle steel, the cutting planes of handsaw remains in △ ANL plane.When having cut after the second straight plane of angle steel, then the first straight plane of cutting angle steel with same method along the first line of cut AN.Wherein, the some N of the first line of cut AN of angle steel
1, some N
2..., some N choose and the second line of cut AL on some L
1, some L
2..., some L the mode of choosing as previously described choose.In this case, in fact, can on line of cut, selected point as cutting reference point, even if choose reference point, also can only choose one or a small amount of point.Figure 14 shows since the situation of the second line of cut cutting, in fact also can be since the first line of cut cutting.
Alternatively, in the time using handsaw cutting angle steel, can also be from the lower end of angle steel, the sideline side of the straight plane of angle steel start, simultaneously along two lines of cut cuttings of two straight planes of angle steel.As shown in figure 15, first handsaw is positioned at a L, some N place, and the while is from the sideline side direction ridge line side cutting of two straight planes of angle steel.The point N of the first line of cut AN of angle steel
1, some N
2..., some N choose and the second line of cut AL on some L
1, some L
2..., some L the mode of choosing as previously described choose.In the time that handsaw cuts from a L, some N, handsaw is towards straight line N
nl
nor towards a N
nor towards a L
ncut, to handsaw is cut along △ ANL plane; By that analogy, when being cut to straight line N
2l
2be cut in other words a N
2, some L
2time, handsaw is towards straight line N
1l
1or towards a N
1or towards a L
1cut; When being cut to straight line N
1l
1be cut in other words a N
1, some L
1time, handsaw cuts towards an A, until cut complete.
By above-mentioned angle steel cutting method of the present invention, can make the plane cutting out be positioned at triangle △ ANL plane, be convenient to form neat, identical faying face, thereby ensure that angle steel engages well with another angle steel, ensure the dimensional requirement of finished product.
Utilize angle-steel blanking scribble method of the present invention and angle steel cutting method, as long as it is carefully conscientious to accomplish in the time of operation, the angle steel obtaining after cutting need not be repaiied, can directly dock welding for common thickness or thinner angle steel, and for the heavy wall angle steel that need to make bevel for welding, cut out regular standard cutting section because angle steel has utilized angle-steel blanking scribble method of the present invention and angle steel cutting method, thereby can produce easily qualified bevel for welding, then dock welding.In addition, angle-steel blanking scribble method of the present invention and angle steel cutting method are applicable to the Corner butt joint of any specification angle steel, as unequal-sided angle steel etc.When quantity is many, can first make a model, in order to reduce the workload of many repetitions.Method of the present invention is simple, practical, quick, accurately, can be by the line work that need to spend just can complete for one, two hour by conventional method, shorten to once, can complete in two minutes, and greatly improved precision.Under common execution conditions, staff only need remember 0.707a (or
) task such as angle steel line and blanking that can complete easily, efficiently different accuracy requirement.
It should be noted that, in the description of the above embodiment of the present invention, in different situations, the implication of a is different, is deriving
process in, a refers to the physical length of the length of side of the end line of angle steel.In the time describing angle steel scribble method of the present invention, overlap with M under situation at M ', a refers to the physical length of the length of side of the end line of angle steel, under the situation not overlapping with M at M ', a refers to the length of the line segment AM ' getting in the straight plane of angle steel.
In the description that provided herein, a large amount of details are described.But, can understand, embodiments of the invention can be put into practice in the situation that there is no these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand one or more in each inventive aspect, in the above in the description of exemplary embodiment of the present invention, each feature of the present invention is grouped together into single embodiment, figure or sometimes in its description.But, the method for the disclosure should be construed to the following intention of reflection: the present invention for required protection requires than the more feature of feature of clearly recording in each claim.Or rather, as reflected in claims, inventive aspect is to be less than all features of disclosed single embodiment above.Therefore, claims of following detailed description of the invention are incorporated to this detailed description of the invention thus clearly, and wherein each claim itself is as independent embodiment of the present invention.
In addition, those skilled in the art can understand, although embodiment more described herein comprise some feature instead of further feature included in other embodiment, the combination of the feature of different embodiment means within scope of the present invention and forms different embodiment.For example, in claims, the one of any of embodiment required for protection can be used with combination arbitrarily.
It should be noted above-described embodiment the present invention will be described instead of limit the invention, and those skilled in the art can design alternative embodiment in the case of not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has multiple such elements.The present invention can be by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In the unit claim of having enumerated some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (10)
1. an angle steel class right angle cutting of material scribble method, comprising:
Straight line AM in the plane of the first straight plane of angle steel class right angle section bar, at the distolateral picture near angle steel class right angle section bar perpendicular to the ridge line of angle steel class right angle section bar, wherein A is positioned on the ridge line of angle steel class right angle section bar, and M is positioned on the sideline of the first straight plane of angle steel class right angle section bar;
On described straight line AM, get 1 M ';
Be the straight line M ' K of the ridge line that is parallel to angle steel class right angle section bar through a M ';
Taking a M ' as starting point, in the direction distolateral away from angle steel class right angle section bar, measure on straight line M ' K
length, obtain some a N ', wherein a is the length of A M '; And
With straight line tie point A and some N ' and extend to the sideline of the first straight plane of angle steel class right angle section bar, obtain the intersection point N in straight line A N ' and the sideline of the first straight plane of angle steel class right angle section bar, i.e. the first cut point, AN is the first line of cut.
2. method according to claim 1, wherein,
The ridge line that some A is taken as angle steel class right angle section bar is at this distolateral end points.
3. method according to claim 2, wherein,
At the end line of the first straight plane of described angle steel class right angle section bar during perpendicular to the ridge line of angle steel class right angle section bar, described some M is taken as the sideline of the first straight plane of angle steel class right angle section bar at this distolateral end points.
4. according to the method in claim 2 or 3, wherein,
In the time of the sideline of the first straight plane of described angle steel class right angle section bar and the ridge line parallel of angle steel class right angle section bar, get described some M ' and overlap with some M,
Sideline along the described first straight plane measures from putting M
length, the some N ' obtaining, is the first cut point N.
5. according to the method described in any one in claim 1-4, wherein,
The second cut point L of the second straight plane of described angle steel class right angle section bar and the second line of cut AL adopt with the first cut point N of the first straight plane and the same method of the first line of cut AN that obtain angle steel class right angle section bar and obtain, or adopt acquisition with the following method:
In the second straight plane of angle steel class right angle section bar, draw the straight line perpendicular to the ridge line of angle steel class right angle section bar through an A, on this straight line, intercept AJ '=A M ', obtain some J ';
Be parallel to the straight line J ' K ' of the ridge line of angle steel class right angle section bar through a J ' work;
Taking an A as the center of circle, taking an AN ' as radius, with the picture camber line of planing, describedly plan crossingly with straight line J ' K ', obtain a L ', tie point A is with some L ' and extend, crossing with the sideline of the second straight plane of angle steel class right angle section bar, obtain a L, obtain the second line of cut AL.
6. according to the method described in any one in claim 1-5, wherein,
get numerical approximation 0.7071a, 0.707a or 0.7a.
7. method according to claim 6, wherein, when
while getting numerical approximation 0.7a,
The length of described 0.7a obtains as follows:
In the first straight plane of angle steel class right angle section bar, draw arbitrarily a ray AC through some A;
Taking an A as initial point, intercept continuously 10 equal line segments, obtain successively respectively some A
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8, A
9, and A
0;
With straight line tie point M ' and some A
0, obtain straight line M ' A
0;
Through A
7do and be parallel to M ' A
0straight line, obtain intersection point N crossing with AM '
0, AN
0length be 0.7a.
8. an angle steel class right angle section bar cutting method, comprising:
Obtain the first line of cut AN of the first straight plane of angle steel class right angle section bar and the second line of cut AL of the second straight plane of angle steel class right angle section bar according to the method described in any one in claim 1-7; And
During along the first line of cut AN and/or the second line of cut AL cutting, the cut surface forming after cutting appliance cutting is positioned in the plane at △ ANL place with cutting appliance.
9. method according to claim 8, wherein,
Described with cutting appliance during along the first line of cut AN and/or the second line of cut AL cutting, the step that the cut surface that makes to form after cutting appliance cutting is positioned in the plane at △ ANL place comprises:
On first line of cut of the first straight plane of described angle steel class right angle section bar and the second line of cut of the second straight plane of angle steel class right angle section bar, get respectively n point, i.e. the point of n on the first line of cut AN N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2..., L
n, and AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n;
With cutting appliance along the first line of cut AN, the first straight plane of starting to cut angle steel class right angle section bar from a N, when cutting appliance during at some N place the cut direction of cutting appliance point to a some L; Cutting appliance is at a N
n-1, the cut direction of cutting appliance is pointed to some L when at the place
n-1, by that analogy, cutting appliance is at a N
1, the cut direction of cutting appliance is pointed to some L when at the place
1, until be cut to an A; With cutting appliance along the second line of cut AL, the second straight plane of starting to cut angle steel class right angle section bar from a L, when cutting appliance during at some L place the cut direction of cutting appliance point to a some N; Cutting appliance is at a L
n-1, the cut direction of cutting appliance is pointed to some N when at the place
n-1, by that analogy, cutting appliance is at a L
1, the cut direction of cutting appliance is pointed to some N when at the place
1, until be cut to an A.
10. method according to claim 8, wherein,
Described with cutting appliance during along the first line of cut AN and/or the second line of cut AL cutting, the step that the cut surface that makes to form after cutting appliance cutting is positioned in the straight plane at △ ANL place comprises:
On first line of cut of the first straight plane of described angle steel class right angle section bar and the second line of cut of the second straight plane of angle steel class right angle section bar, get respectively n point, i.e. the point of n on the first line of cut AN N
1, N
2..., N
n, n some L on the second line of cut AL
1, L
2..., L
n, and AN
1=AL
1, AN
2=AL
2..., AN
n=AL
n;
Cutting appliance is from A point, and towards straight line N
1l
1, or towards a N
1with a L
1the first and second straight planes of direction cutting angle steel class right angle section bar; When being cut to a N
1with a L
1time, cutting appliance is towards straight line N
2l
2, or towards a N
2, or towards a L
2cutting, by that analogy, until be cut to a N, some L; Or
Cutting appliance cuts the first straight plane of angle steel class right angle section bar since the first line of cut AN, cutting appliance is towards the second line of cut AL or the point on it; Or
The first and second straight planes that cutting appliance cuts angle steel class right angle section bar since the first cut point N and the second cut point L, along the first line of cut AN and the second line of cut AL simultaneously, cutting appliance is towards a L
n-1or towards a N
n-1; When being cut to a L
n-1with a N
n-1time, cutting appliance is towards a L
n-2or towards a N
n-2; By that analogy, until be cut to an A.
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|---|---|---|---|
| CN201310554154.0A CN104108096B (en) | 2013-11-08 | 2013-11-08 | Angle steel class right angle cutting of material scribble method and angle steel class right angle section bar cutting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554154.0A CN104108096B (en) | 2013-11-08 | 2013-11-08 | Angle steel class right angle cutting of material scribble method and angle steel class right angle section bar cutting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149724A (en) * | 2015-08-11 | 2015-12-16 | 多维联合集团有限公司 | Device and method for cutting angle iron |
| CN106735582A (en) * | 2016-12-14 | 2017-05-31 | 中国十九冶集团（防城港）设备结构有限公司 | The imitative type cutter process of angle steel |
| CN106891191A (en) * | 2017-04-13 | 2017-06-27 | 中国十九冶集团（防城港）设备结构有限公司 | Two-sided angle steel profiling cutter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136090Y (en) * | 1992-08-20 | 1993-06-16 | 冯振海 | Horizontal shearing machine for angle steel |
| JP2002264078A (en) * | 2001-03-08 | 2002-09-18 | Sankyo Giken:Kk | Cutting position marking device and cutting method using cutting position marking device |
| FR2878179A1 (en) * | 2004-11-24 | 2006-05-26 | Concetto Giancola | Cutting line, cutting arc and cutting circle marking device for tiles, has sliding tube and inclinable angle iron locked by manual locking devices, and forty five degree and ninety degree set squares covered with triangular protection |
| CN201095013Y (en) * | 2007-09-28 | 2008-08-06 | 董智德 | Cutting device for angle steel |
| CN201186435Y (en) * | 2008-04-29 | 2009-01-28 | 永城煤电控股集团有限公司 | Angle steel angle guider |
-
2013
- 2013-11-08 CN CN201310554154.0A patent/CN104108096B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136090Y (en) * | 1992-08-20 | 1993-06-16 | 冯振海 | Horizontal shearing machine for angle steel |
| JP2002264078A (en) * | 2001-03-08 | 2002-09-18 | Sankyo Giken:Kk | Cutting position marking device and cutting method using cutting position marking device |
| FR2878179A1 (en) * | 2004-11-24 | 2006-05-26 | Concetto Giancola | Cutting line, cutting arc and cutting circle marking device for tiles, has sliding tube and inclinable angle iron locked by manual locking devices, and forty five degree and ninety degree set squares covered with triangular protection |
| CN201095013Y (en) * | 2007-09-28 | 2008-08-06 | 董智德 | Cutting device for angle steel |
| CN201186435Y (en) * | 2008-04-29 | 2009-01-28 | 永城煤电控股集团有限公司 | Angle steel angle guider |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149724A (en) * | 2015-08-11 | 2015-12-16 | 多维联合集团有限公司 | Device and method for cutting angle iron |
| CN106735582A (en) * | 2016-12-14 | 2017-05-31 | 中国十九冶集团（防城港）设备结构有限公司 | The imitative type cutter process of angle steel |
| CN106891191A (en) * | 2017-04-13 | 2017-06-27 | 中国十九冶集团（防城港）设备结构有限公司 | Two-sided angle steel profiling cutter |
| CN106891191B (en) * | 2017-04-13 | 2023-06-09 | 中国十九冶集团（防城港）设备结构有限公司 | Profiling cutter for double-sided angle steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104108096B (en) | 2016-01-20 |
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