CN105128572A - Aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square - Google Patents
Aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square Download PDFInfo
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- CN105128572A CN105128572A CN201510509821.2A CN201510509821A CN105128572A CN 105128572 A CN105128572 A CN 105128572A CN 201510509821 A CN201510509821 A CN 201510509821A CN 105128572 A CN105128572 A CN 105128572A
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- 229910001182 Mo alloy Inorganic materials 0.000 title claims abstract description 16
- UNQHSZOIUSRWHT-UHFFFAOYSA-N aluminum molybdenum Chemical compound [Al].[Mo] UNQHSZOIUSRWHT-UHFFFAOYSA-N 0.000 title abstract 3
- 230000007704 transition Effects 0.000 claims abstract description 24
- 230000006872 improvement Effects 0.000 claims abstract description 16
- ZXTFQUMXDQLMBY-UHFFFAOYSA-N alumane;molybdenum Chemical compound [AlH3].[Mo] ZXTFQUMXDQLMBY-UHFFFAOYSA-N 0.000 claims description 21
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000005864 Sulphur Substances 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 3
- 230000002459 sustained effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to special teaching aids for teaching and in particular to an aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square. According to improvement, the set square is characterized in that the upper surface of a rotating disc part is provided with an arch-shaped protruding beam, the lower surface of the rotating disc part is a lower sliding plane, and the upper surface of a ruler plate part is an upper plane of the ruler plate; the lower sliding plane is provided with a sliding through hole, and the upper plane of the ruler plate is provided with a ruler plate step hole; the upper plane of the ruler plate is provided with a circular protruding rail; a centrosymmetric transition protruding strip is arranged between the circular protruding rail and the upper scale plane; the lower sliding plane is provided with a circular groove, and a centrosymmetric transition groove is formed between the circular groove and the lower sliding plane; corner scales are formed on the upper plane of the ruler plate, the rotating disc part is provided with a rotating disc chamfer, and the rotating disc chamfer is provided with a corner pointer; the inner side of the upper plate of the ruler plate is provided with a scale slope, and the scale slope is further engraved with length scales; and a shaft pin rivet sequentially penetrates the sliding through hole and the ruler plate step hole, and the lower sliding plane is in butt joint onto the upper plane of the ruler plate in a rotating manner through the shaft pin rivet. The aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square has the beneficial effects of being changeable in size and angle and the like.
Description
Technical field
The present invention relates to the upper teaching aid special of a kind of teaching, International Classification of Patents is B43L, particularly relates to aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square.
Background technology
Mathematics is one of important subject, and in Junior Mathematics, triangle geometry is most important.Learning triangle geometry well is junior middle school's plane geometry and even the most important basis of senior middle school's solid geometry.
At present, in teaching, the teaching aid of religion geometry has ruler, set square etc., and they exist many drawbacks: carry inconvenience, uses also inconvenient, prior or function singleness.When imparting knowledge to students drawing, user can only be online basic previous step one step draw figure required for oneself, drawing course is loaded down with trivial details, and it is not directly perceived, more can not training student association, analogy, observation and manipulative ability preferably, teacher should draw and say again, very busy, adds great work difficulty to education personnel.Chinese patent: the adjustable set square (patent No.: 2011200369592), but cannot accomplish that its three bars chi is at same plane, there is comparatively big error, another Chinese patent: the adjustable multipurpose four bar chi (patent No.: 2013201682530), also be to accomplish that its four bars chi is at same plane, still exists comparatively big error; Also has only one China patent: (patent No.: 2014208739549) remains and cannot accomplish that each ruler is at same plane, is all to there is comparatively big error multifunctional teaching gauge.
Summary of the invention
For above prior art Problems existing, the present invention adopts round protruding rail, to the design that measurer regulates, achieve the different specification square of sizes or rectangle, aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square one step can be shared and accurately put in place.Specific as follows:
Aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, comprise the first portable plate, the second portable plate and the 3rd portable plate that three physical dimensions are identical, every portable plate is made up of, as improvement chi plate portion and dial portion:
The upper surface of described dial portion has the convex beam of arch, and the lower surface of described dial portion is slippage lower plane, and the upper surface of described chi plate portion is plane on chi plate; Slippage lower plane there is slippage through hole, chi plate plane has chi plate stepped hole; Plane there is round protruding rail to chi plate, and circular protruding rail and scale have centrosymmetric transition raised line between plane; Slippage lower plane there is round groove, and has centrosymmetric transition groove between circular groove and slippage lower plane; Plane has corner scale to chi plate, and described dial portion has rotating disk chamfering, rotating disk chamfering has corner pointer; On chi plate, planar inner has scale slope, and length scale is also engraved on scale slope;
Pivot pin rivet passes through slippage through hole and chi plate stepped hole successively, and pivot pin rivet to be overlapped on chi plate in plane by rotatable for slippage lower plane;
First portable plate is made up of the first chi plate portion and the first dial portion, and the second portable plate is made up of the second chi plate portion and the second dial portion, and the 3rd portable plate is made up of the 3rd chi plate portion and the 3rd dial portion;
Round protruding rail on the first described chi plate portion and between the round groove on the 3rd dial portion for being slidably matched, round protruding rail on the second described chi plate portion and between the round groove on the first dial portion for being slidably matched, the round protruding rail on the 3rd described chi plate portion and between the round groove on the second dial portion for being slidably matched;
As further improvement: the first described portable plate, the second portable plate, the 3rd portable plate and the 4th portable plate are all adopt the light-duty steel alloy of aluminium molybdenum on the whole, its material composition is: Mo(molybdenum): 11 ~ 13%, W (tungsten): 3.1 ~ 3.3%, Cu(copper): 2.1 ~ 2.3%, Zn(zinc): 1.4 ~ 1.6%, C(carbon): 1.1 ~ 1.3%, surplus is Al(aluminium) and inevitable impurity; The weight percent content of described impurity is: Sn(tin) be less than 0.05%, Si(silicon) be less than 0.20%, Mn(manganese) be less than 0.25%, S(sulphur) be less than 0.010%, P(phosphorus) be less than 0.015%; The Specifeca tion speeification of the described light-duty alloy steel material of aluminium molybdenum is: Rockwell hardness HRC value is 44 ~ 46, and density is 3.1 to 3.3 grams every cubic centimetre.
As further improvement: on described scale, plane is 3.4 to 3.6 millimeters to the distance of described circular protruding rail central axis, and the section radius of circular protruding rail is 3.1 to 3.3 millimeters, and the width of described transition raised line is 3.4 to 3.6 millimeters; Described slippage lower plane is 3.4 to 3.6 millimeters to the distance of described circular groove central axis, and the section radius of described circular groove is 3.1 to 3.3 millimeters, and the width of described transition groove is 3.4 to 3.6 millimeters;
For being slidably matched between circular groove respectively and in the 4th slippage part of circular protruding rail on the first described scale part and transition raised line and transition groove; For being slidably matched between circular groove respectively and in the 3rd slippage part of circular protruding rail on the 4th described scale part and transition raised line and transition groove.
As further improvement: the upper surface of described dial portion has the distance between arch convex beam peak to slippage lower plane to be 14 to 16 millimeters.
As further improvement: the angle on described scale slope and chi plate between plane is 47 ~ 49 degree.
As further improvement: described length scale texture depth is 0.24 to 0.26 millimeter.
As further improvement: there is stepped hole angle face chi plate stepped hole both sides, the angle between the stepped hole angle face of both sides is 55 to 57 degree.
beneficial effect of the present invention:
One, dial portion is positioned at chi plate portion one end and is overlapped on plane on chi plate portion, and on slippage lower plane and chi plate, plane is in sustained height, guarantees that the length scale on three limits is all in same level, avoids error on line of sight; And the round groove on every portable plate and between the round protruding rail on adjacent activities plate for being slidably matched, particularly plane there is chi plate corner scale corresponding in position with the corner pointer on the slippage lower plane back side, convenient, intuitively between control dial portion and chi plate portion the anglec of rotation can be accomplished.
Two, the present invention adopts the portable composite construction of three group, disassembles, the size that takes up room is little, is easy to carry after convenient each use.
Three, the aluminium molybdenum alloy in lightweight steel of integral light high rigidity of the present invention, has lightweight and advantage that is resistance to deformation.
Four, education activities plate provided by the present invention, has structure simple, easy to use, demonstrates the advantages such as size, angle are changeable simultaneously.
Teacher is when doing demonstration explanation to student, disposable continuous differentiation puts in place, more vividly understandable, makes student more have enjoyment in learning process.Multiple set square is not needed to demonstrate, do not need on blackboard, repeatedly draw not of uniform size, that angle is different triangle yet, to reduce measure error and to improve efficiency of teaching.
Accompanying drawing explanation
Fig. 1 is single outline drawing of the second portable plate 20 after the present invention disassembles.
Fig. 2 is the A-A profile in Fig. 1.
Fig. 3 is the outline drawing of the second dial portion 28 in Fig. 1.
Fig. 4 is the isometric front view of Fig. 3.
Fig. 5 is the rear isometric view of Fig. 3.
Fig. 6 is the B-B sectional view in Fig. 3.
Fig. 7 is the outline drawing of the second chi plate portion 29 in Fig. 1.
Fig. 8 is the C-C sectional view in Fig. 7.
The outline drawing of equilateral triangle is developed into after Fig. 9 the present invention combination.
The outline drawing of isosceles triangle is developed into after Figure 10 the present invention combination.
The outline drawing of right angled triangle is developed into after Figure 11 the present invention combination.
The outline drawing of right angled isosceles triangle is developed into after Figure 12 the present invention combination.
Figure 13 is the second dial portion 28 in Fig. 9 to Figure 12 and the profile at position of matching between the 3rd chi plate portion 39.
Detailed description of the invention
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Figure 13: the teaching set square of aluminium molybdenum alloys round groove corner pointer isoplanar, comprise the first identical portable plate 10, second portable plate 20 of three physical dimensions and the 3rd portable plate 30, every portable plate is made up of, as improvement chi plate portion and dial portion:
The upper surface of described dial portion has the convex beam 94 of arch, and the lower surface of described dial portion is slippage lower plane 61, and the upper surface of described chi plate portion is plane 16 on chi plate; Slippage lower plane 61 there is slippage through hole 108, chi plate plane 16 has chi plate stepped hole 109; Chi plate plane 16 there is round protruding rail 14, and circular protruding rail 14 and chi plate have centrosymmetric transition raised line 71 between plane 16; Slippage lower plane 61 there is round groove 41, and between circular groove 41 and slippage lower plane 61, have centrosymmetric transition groove 74; Plane 16 has corner scale 13 to chi plate, and described dial portion has rotating disk chamfering 103, rotating disk chamfering 103 has corner pointer 31; Chi plate there is scale slope 15 inside plane 16, scale slope 15 is also engraved length scale 51;
Pivot pin rivet 100 passes through slippage through hole 108 and chi plate stepped hole 109 successively, and pivot pin rivet 100 to be overlapped on chi plate in plane 16 by rotatable for slippage lower plane 61;
First portable plate 10 is made up of the first chi plate portion 19 and the first dial portion 18, and the second portable plate 20 is made up of the second chi plate portion 29 and the second dial portion 28, and the 3rd portable plate 30 is made up of the 3rd chi plate portion 39 and the 3rd dial portion 38;
Round protruding rail 14 on the first described chi plate portion 19 and between the round groove 41 on the 3rd dial portion 38 for being slidably matched, round protruding rail 14 on the second described chi plate portion 29 and between the round groove 41 on the first dial portion 18 for being slidably matched, the round protruding rail 14 on the 3rd described chi plate portion 39 and between the round groove 41 on the second dial portion 28 for being slidably matched;
As further improvement: described the first portable plate 10, second portable plate 20, the 3rd portable plate 30 and the 4th portable plate 40 are all adopt the light-duty steel alloy of aluminium molybdenum on the whole, its material composition is: Mo(molybdenum): 11 ~ 13%, W (tungsten): 3.1 ~ 3.3%, Cu(copper): 2.1 ~ 2.3%, Zn(zinc): 1.4 ~ 1.6%, C(carbon): 1.1 ~ 1.3%, surplus is Al(aluminium) and inevitable impurity; The weight percent content of described impurity is: Sn(tin) be less than 0.05%, Si(silicon) be less than 0.20%, Mn(manganese) be less than 0.25%, S(sulphur) be less than 0.010%, P(phosphorus) be less than 0.015%; The Specifeca tion speeification of the described light-duty alloy steel material of aluminium molybdenum is: Rockwell hardness HRC value is 44 ~ 46, and density is 3.1 to 3.3 grams every cubic centimetre.
As further improvement: on described chi plate, plane 16 is 3.4 to 3.6 millimeters to the distance of described circular protruding rail 14 central axis, and the section radius of circular protruding rail 14 is 3.1 to 3.3 millimeters, and the width of described transition raised line 71 is 3.4 to 3.6 millimeters; Described slippage lower plane 61 is 3.4 to 3.6 millimeters to the distance of described circular groove 41 central axis, and the section radius of described circular groove 41 is 3.1 to 3.3 millimeters, and the width of described transition groove 74 is 3.4 to 3.6 millimeters.
As further improvement: the upper surface of described dial portion has the distance between arch convex beam 94 peak to slippage lower plane 61 to be 14 to 16 millimeters.
As further improvement: the angle on described scale slope 15 and chi plate between plane 16 is 47 ~ 49 degree.
As further improvement: described length scale 51 texture depth 0.24 to 0.26 millimeter.
As further improvement: there is stepped hole angle face 102 chi plate stepped hole 109 both sides, the angle between the stepped hole angle face 102 of both sides is 55 to 57 degree.
In embodiment, the material composition of the light-duty steel alloy of aluminium molybdenum is: Mo(molybdenum): 12%, W (tungsten): 3.2%, Cu(copper): 2.2%, Zn(zinc): 1.5%, C(carbon): 1.2%, surplus is Al(aluminium) and inevitable impurity; The weight percent content of described impurity is: Sn(tin) be 0.04%, Si(silicon) be 0.16%, Mn(manganese) be 0.22%, S(sulphur) be 0.007%, P(phosphorus) be 0.012%; The Specifeca tion speeification of the light-duty alloy steel material of aluminium molybdenum is: Rockwell hardness HRC value is 45, and density is 3.2 grams every cubic centimetre.
On chi plate, plane 16 is 3.5 millimeters to the distance of circular protruding rail 14 central axis, and the section radius of circular protruding rail 14 is 3.2 millimeters, and the width of transition raised line 71 is 3.5 millimeters;
The upper surface of dial portion has the distance between arch convex beam 94 peak to slippage lower plane 61 to be 15 millimeters, the distance of slippage lower plane 61 to circular groove 41 central axis is 3.5 millimeters, the section radius of circular groove 41 is 3.2 millimeters, the width of transition groove 74 is 3.5 millimeters, and circular protruding rail 14 at least one end is unobstructed;
Angle on scale slope 15 and chi plate between plane 16 is 48 degree, length scale 51 texture depth 0.25 millimeter, adopts electric pulse processing to generate.
There is stepped hole angle face 102 chi plate stepped hole 109 both sides, and the angle between the stepped hole angle face 102 of both sides is 56 degree.
Angle between rotating disk chamfering 103 and slippage lower plane 61 is 45 degree.
Slippage lower plane 61 is in sustained height with plane 16 on the chi of limit.
When will carry out teaching differentiation to student, step is as follows:
One, in Fig. 9, equilateral triangle is developed into after the present invention will being combined, only the chi plate portion in every portable plate need be done relative rotation with dial portion, by the corner pointer 31 on slippage lower plane 61 back side, the corner scale 13 observed on chi plate in plane 16 have rotated 30 degree, namely 60 are developed into by 90 degree of rotations between the round protruding rail 14 of every portable plate self and round groove 41, scale slope 15 then on the first chi plate portion 19 and the scale slope 15 on the second chi plate portion 29 and the angle between the scale slope 15 on the 3rd chi plate portion 39 are all 60 degree, equilateral triangle is set up.
Two, Tu10Zhong, isosceles triangle is developed into after the present invention will being combined, only the chi plate portion in wherein two portable plates need be done the identical anglec of rotation with dial portion, such as: the anglec of rotation the 3rd chi plate portion 39 and the 3rd dial portion 38 being done counterclockwise 15 degree, second chi plate portion 29 and the second dial portion 28 are also done counterclockwise the anglec of rotation of 15 degree, then the first chi plate portion 19 and the first dial portion 18 necessarily do the anglec of rotation of 60 degree counterclockwise, and the equilateral triangle that interior angle is respectively 75 degree and 75 degree and 30 degree is set up.
Three, Tu11Zhong, right angled triangle is developed into after the present invention will being combined, only the chi plate portion in a wherein portable plate and dial portion need be kept centering position non rotating, such as: the second chi plate portion 29 and the second dial portion 28 are kept centering position non rotating, when the 3rd chi plate portion 39 and the 3rd dial portion 38 do the anglec of rotation of 60 degree counterclockwise, then the first chi plate portion 19 and the first dial portion 18 necessarily do the anglec of rotation of 30 degree counterclockwise, and the right angled triangle that interior angle is respectively 90 degree and 30 degree and 60 degree is set up.
Four, in Figure 12, isosceles right triangle is developed into after the present invention will being combined, only the chi plate portion in a wherein portable plate and dial portion need be kept centering position non rotating, chi plate portion in other two portable plates and all equidirectional anglec of rotation doing 45 degree of dial portion, such as: the second chi plate portion 29 and the second dial portion 28 are kept centering position non rotating, 3rd chi plate portion 39 and the 3rd dial portion 38 are done counterclockwise the anglec of rotation of 45 degree, second chi plate portion 29 and the second dial portion 28 are also done counterclockwise the anglec of rotation of 45 degree, the isosceles right triangle that then interior angle is respectively 90 degree and 45 degree and 45 degree is set up.
The above-mentioned outstanding substantive distinguishing features of the present invention, has following significant progressive effect:
One, dial portion is positioned at chi plate portion one end and is overlapped on plane on chi plate portion, and slippage lower plane 61 is in sustained height with plane 16 on chi plate, guarantees that the length scale 51 on three limits is all in same level, avoids error on line of sight; And the round groove 41 on every portable plate and between the round protruding rail 14 on adjacent activities plate for being slidably matched, particularly plane 16 there is chi plate corner scale 13 corresponding in position with the corner pointer 31 on slippage lower plane 61 back side, convenient, intuitively between control dial portion and chi plate portion the anglec of rotation can be accomplished.
Two, the present invention adopts the portable composite construction of three group, disassembles, the size that takes up room is little, is easy to carry after convenient each use.
Three, the aluminium molybdenum alloy in lightweight steel of integral light high rigidity of the present invention, has lightweight and advantage that is resistance to deformation.
Four, education activities plate provided by the present invention, has structure simple, easy to use, demonstrates the advantages such as size, angle are changeable simultaneously.
Teacher is when doing demonstration explanation to student, disposable continuous differentiation puts in place, more vividly understandable, makes student more have enjoyment in learning process.Multiple set square is not needed to demonstrate, do not need on blackboard, repeatedly draw not of uniform size, that angle is different triangle yet, to reduce measure error and to improve efficiency of teaching.
Claims (6)
1. aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, comprise the first portable plate (10), the second portable plate (20) and the 3rd portable plate (30) that three physical dimensions are identical, every portable plate is made up of chi plate portion and dial portion, it is characterized in that::
The upper surface of described dial portion has the convex beam of arch (94), and the lower surface of described dial portion is slippage lower plane (61), and the upper surface of described chi plate portion is plane (16) on chi plate; Slippage lower plane (61) there is slippage through hole (108), plane (16) has chi plate stepped hole (109) to chi plate; Plane (16) there is round protruding rail (14) to chi plate, and circular protruding rail (14) and scale have centrosymmetric transition raised line (71) between plane (16); Slippage lower plane (61) there is round groove (41), and have centrosymmetric transition groove (74) between circular groove (41) and slippage lower plane (61); Plane (16) has corner scale (13) to chi plate, and described dial portion has rotating disk chamfering (103), rotating disk chamfering (103) has corner pointer (31); On chi plate, there is scale slope (15) plane (16) inner side, scale slope (15) also engraves length scale (51);
Pivot pin rivet (100) passes through slippage through hole (108) and chi plate stepped hole (109) successively, and pivot pin rivet (100) to be overlapped on chi plate in plane (16) by rotatable for slippage lower plane (61);
First portable plate (10) is made up of the first chi plate portion (19) and the first dial portion (18), second portable plate (20) is made up of the second chi plate portion (29) and the second dial portion (28), and the 3rd portable plate (30) is made up of the 3rd chi plate portion (39) and the 3rd dial portion (38);
Round protruding rail (14) on the first described chi plate portion (19) and between the round groove (41) on the 3rd dial portion (38) for being slidably matched, round protruding rail (14) on the second described chi plate portion (29) and between the round groove (41) on the first dial portion (18) for being slidably matched, the round protruding rail (14) on the 3rd described chi plate portion (39) and between the round groove (41) on the second dial portion (28) for being slidably matched;
As further improvement: described the first portable plate (10), the second portable plate (20), the 3rd portable plate (30) and the 4th portable plate (40) are all adopt the light-duty steel alloy of aluminium molybdenum on the whole, its material composition is: Mo(molybdenum): 11 ~ 13%, W (tungsten): 3.1 ~ 3.3%, Cu(copper): 2.1 ~ 2.3%, Zn(zinc): 1.4 ~ 1.6%, C(carbon): 1.1 ~ 1.3%, surplus is Al(aluminium) and inevitable impurity; The weight percent content of described impurity is: Sn(tin) be less than 0.05%, Si(silicon) be less than 0.20%, Mn(manganese) be less than 0.25%, S(sulphur) be less than 0.010%, P(phosphorus) be less than 0.015%; The Specifeca tion speeification of the described light-duty alloy steel material of aluminium molybdenum is: Rockwell hardness HRC value is 44 ~ 46, and density is 3.1 to 3.3 grams every cubic centimetre.
2. according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: on described scale, plane (16) is 3.4 to 3.6 millimeters to the distance of described circular protruding rail (14) central axis, the section radius of circular protruding rail (14) is 3.1 to 3.3 millimeters, and the width of described transition raised line (71) is 3.4 to 3.6 millimeters; Described slippage lower plane (61) is 3.4 to 3.6 millimeters to the distance of described circular groove (41) central axis, the section radius of described circular groove (41) is 3.1 to 3.3 millimeters, and the width of described transition groove (74) is 3.4 to 3.6 millimeters;
For being slidably matched between circular groove (41) respectively and in the 4th slippage part (48) of circular protruding rail (14) on described the first scale part (19) and transition raised line (71) and transition groove (74); For being slidably matched between circular groove (41) respectively and in the 3rd slippage part (38) of circular protruding rail (14) on the 4th described scale part (49) and transition raised line (71) and transition groove (74).
3. according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: the upper surface of described dial portion has the distance between the convex beam of arch (94) peak to slippage lower plane (61) to be 14 to 16 millimeters.
4. according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: the angle on described scale slope (15) and chi plate between plane (16) is 47 ~ 49 degree.
5. according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: described length scale (51) texture depth is 0.24 to 0.26 millimeter.
6. according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: there is stepped hole angle face (102) chi plate stepped hole (109) both sides, the angle between the stepped hole angle face (102) of both sides is 55 to 57 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510509821.2A CN105128572B (en) | 2015-08-19 | 2015-08-19 | Aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510509821.2A CN105128572B (en) | 2015-08-19 | 2015-08-19 | Aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square |
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| Publication Number | Publication Date |
|---|---|
| CN105128572A true CN105128572A (en) | 2015-12-09 |
| CN105128572B CN105128572B (en) | 2017-01-18 |
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| CN201510509821.2A Active CN105128572B (en) | 2015-08-19 | 2015-08-19 | Aluminum molybdenum alloy circular-groove corner-pointer coplanar teaching set square |
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| CN105910889A (en) * | 2016-04-28 | 2016-08-31 | 张志雄 | Glass detector based on plate-wheel halo linkage camera shooting and molybdenum alloy bevel sliding-groove corner clamps |
| CN106018130A (en) * | 2015-11-26 | 2016-10-12 | 张志雄 | Verifying device for V-shaped splint manganese alloy glass of handle platen debris recoverer |
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| CN105128572B (en) | 2017-01-18 |
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