CN105128572B - 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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- CN105128572B CN105128572B CN201510509821.2A CN201510509821A CN105128572B CN 105128572 B CN105128572 B CN 105128572B CN 201510509821 A CN201510509821 A CN 201510509821A CN 105128572 B CN105128572 B CN 105128572B
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- plane
- chi plate
- chi
- dial portion
- groove
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- 229910001182 Mo alloy Inorganic materials 0.000 title claims description 14
- UNQHSZOIUSRWHT-UHFFFAOYSA-N aluminum molybdenum Chemical compound [Al].[Mo] UNQHSZOIUSRWHT-UHFFFAOYSA-N 0.000 title claims description 11
- 230000007704 transition Effects 0.000 claims description 14
- ZXTFQUMXDQLMBY-UHFFFAOYSA-N alumane;molybdenum Chemical compound [AlH3].[Mo] ZXTFQUMXDQLMBY-UHFFFAOYSA-N 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 7
- 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
- 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
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 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
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 230000006872 improvement Effects 0.000 abstract description 12
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical class [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 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
- 238000005259 measurement 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to special set squares for teaching, in particular to an inclined surface rail groove through hole corner aluminum-nickel alloy movable teaching set square. According to improvement of the set square, the lower plane of a slide plate is provided with a sliding through hole, and the upper plane of an edge ruler is provided with an edge ruler step hole; the lower plane of the slide plate is provided with an inclined surface convex rail, and the upper plane of the edge ruler is provided with an inclined surface groove; the lower plane of the slide plate is provided with a corner eyehole, and the upper plane of the edge ruler is provided with corner scales; the inner side of the upper plane of the edge ruler is provided with a scale slope, and a length scale is further engraved on the scale slope; the edge ruler step hole is provided with a step hole plane; a stepped screw is provided with a large screw head end and a screw column section; the joint of the large screw head end and the screw column section is a screw step surface; a belleville spring is provided with an outer belleville spring ring and a belleville spring spoke; the outer belleville spring ring is fixed to the included angle of the edge ruler step hole and the step hole plane; the screw step surface is supported by the belleville spring spoke; the step screw sequentially penetrates through the rotary through hole and the edge ruler step hole; and a belleville nut is matched with the outer thread end of the step screw.
Description
Technical field
The present invention relates to a kind of teaching above teaching aid special, International Classification of Patents is b43l, and more particularly, to aluminium molybdenum alloys are 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
Plane geometry or 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 have many drawbacks: carry not side
Just, using also inconvenient, prior or single function.Teaching drawing when, user can only online on the basis of a step
Draw to one step oneself required figure, drawing course is loaded down with trivial details, and not directly perceived, can not preferably training student association,
Analogy, observation and manipulative ability, teacher should draw and say again, very busy, increased great work difficulty to education personnel.
Chinese patent: the adjustable set square (patent No.: 2011200369592), but cannot accomplish that its three bars chi, in same plane, exists
Larger error, another Chinese patent: adjustable multipurpose four bar chi (patent No.: 2013201682530), be also cannot accomplish its four
Bar chi is in same plane, however it remains larger error；Also only one China patent: multifunctional teaching gauge (patent No.:
2014208739549), remain and cannot accomplish that each ruler, in same plane, is all to there is larger error.
Content of the invention
The problem existing for above prior art, the present invention adopts round protruding rail, the design that measurer is adjusted, reality
Show the different specification square of sizes or rectangle, the teaching of aluminium molybdenum alloys round groove corner pointer isoplanar can have been shared
Set square one step accurately puts in place.Specific as follows:
Aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, including three physical dimension identicals first activity
Plate, the second portable plate and the 3rd portable plate, every portable plate is made up of chi plate part and dial portion, as improvement:
The upper surface of described dial portion has arch convex beam, and the lower surface of described dial portion is sliding lower plane,
The upper surface of described chi plate part is plane on chi plate；Sliding through hole is had on sliding lower plane, plane on chi plate has chi plate
Stepped hole；There is round protruding rail in plane on chi plate, and have centrosymmetric transition raised line between plane on circular protruding rail and chi plate；
There is round groove on sliding lower plane, and between circular groove and sliding lower plane, have centrosymmetric transition groove；On chi plate
Corner scale is had on plane, described dial portion has rotating disk chamfering, and rotating disk chamfering has corner pointer；Planar inner on chi plate
There is scale slope, scale slope is also engraved length scale；
Pivot pin rivet passes through sliding through hole and chi plate stepped hole successively, and pivot pin rivet is overlapped on rotatable for sliding lower plane
In plane on chi plate；
First portable plate is made up of the first chi plate part and the first dial portion, and the second portable plate is by the second chi plate part
Formed with the second dial portion, the 3rd portable plate is made up of the 3rd chi plate part and the 3rd dial portion；
Join for slip between the round groove on round protruding rail and the 3rd dial portion in the first described chi plate part
Close, be to be slidably matched between the round groove on round protruding rail and the first dial portion in the second described chi plate part, institute
It is to be slidably matched between the round groove on round protruding rail and the second dial portion in the 3rd chi plate part stated；
Described the first portable plate, the second portable plate and the 3rd portable plate are all using the light-duty steel alloy of aluminum 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%th, c(carbon): 1.1～1.3%, balance of al(aluminum) and inevitable impurity；The weight percent content of described impurity is:
Sn(stannum) less than 0.05%, si(silicon) less than 0.20%, mn(manganese) less than 0.25%, s(sulfur) less than 0.010%, p(phosphorus) be less than
0.015%；The Specifeca tion speeification of the described light-duty alloy steel material of aluminum molybdenum is: Rockwell hardness hrc value is 44～46, and density is
3.1 to 3.3 grams per cubic centimeter.
As further improve: on described chi plate plane arrive described circular protruding rail central axis distance for 3.4 to
3.6 millimeters, the section radius of circular protruding rail are 3.1 to 3.3 millimeters, and the width of described transition raised line is 3.4 to 3.6 millimeters；
The distance of described sliding lower plane to described circular groove central axis is 3.4 to 3.6 millimeters, described circular groove
Section radius are 3.1 to 3.3 millimeters, and the width of described transition groove is 3.4 to 3.6 millimeters.
As improvement further: the upper surface of described dial portion has arch convex beam peak to sliding lower plane
Distance be 14 to 16 millimeters.
As improvement further: on described scale slope and chi plate, the angle between plane is 47 ~ 49 degree.
As improvement further: described length scale texture depth is 0.24 to 0.26 millimeter.
As improvement further: there is stepped hole angle face chi plate stepped hole both sides, between the stepped hole angle face of both sides
Angle is 55 to 57 degree.
Beneficial effects of the present invention:
First, dial portion is located at chi plate part one end and is overlapped on plane in chi plate part, and sliding lower plane and chi plate
Upper plane is in sustained height it is ensured that the length scale on three sides is all in same level, it is to avoid error on line of sight；And every portable plate
On round groove and adjacent activities plate on round protruding rail between for being slidably matched, particularly have corner to carve in plane on chi plate
Degree corresponding in position with the corner pointer on the sliding lower plane back side, can accomplish convenient, intuitively control dial portion
The anglec of rotation and chi plate part between.
2nd, the present invention adopts three one group of portable composite construction, and disassemble afterwards every time, take up room chi by use for convenience
Very little little, be easy to carry.
3rd, the aluminum molybdenum alloy in lightweight steel of integral light high rigidity of the present invention, has the advantages that lightweight and resistance to deformation.
4th, education activities plate provided by the present invention, has structure simply, easy to use, simultaneously demonstration size, angle
The advantages of spend changeable.
When doing demonstration explanation to student, disposably continuous differentiation puts in place teacher, more vividly understandable so that student
More there is enjoyment in learning process.Do not need the demonstration of multiple set squares, also without repeatedly not of uniform size, angle being drawn on blackboard
Spend different trianglees, to reduce measurement error and to improve teaching efficiency.
Brief description
Fig. 1 disassemble for the present invention after the second portable plate 20 single outline drawing.
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 part 29 in Fig. 1.
Fig. 8 is the c-c sectional view in Fig. 7.
Develop into the outline drawing of equilateral triangle after Fig. 9 present invention combination.
Develop into the outline drawing of isosceles triangle after Figure 10 present invention combination.
Develop into the outline drawing of right angled triangle after Figure 11 present invention combination.
Develop into the outline drawing of right angled isosceles triangle after Figure 12 present invention combination.
Figure 13 is the section at position of matching between the second dial portion 28 in Fig. 9 to Figure 12 and the 3rd chi plate part 39
Figure.
Specific embodiment
To describe the present invention with reference to the accompanying drawings and detailed description in detail:
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Figure 13: aluminium molybdenum alloys round groove corner pointer isoplanar
Teaching set square, including three physical dimension identical the first portable plates 10, the second portable plate 20 and the 3rd portable plate 30, every
Portable plate is made up of chi plate part and dial portion, as improvement:
The upper surface of described dial portion has arch convex beam 94, and the lower surface of described dial portion is sliding lower plane
61, the upper surface of described chi plate part is plane 16 on chi plate；Sliding through hole 108 is had on sliding lower plane 61, flat on chi plate
Chi plate stepped hole 109 is had on face 16；Round protruding rail 14 is had on plane 16 on chi plate, and circular protruding rail 14 and plane 16 on chi plate it
Between have centrosymmetric transition raised line 71；Round groove 41 is had on sliding lower plane 61, and circular groove 41 and sliding lower plane
There is centrosymmetric transition groove 74 between 61；Corner scale 13 is had on plane 16 on chi plate, described dial portion has rotating disk
Chamfering 103, rotating disk chamfering 103 has corner pointer 31；There is scale slope 15, on scale slope 15 also inside plane 16 on chi plate
Engrave length scale 51；
Pivot pin rivet 100 passes through sliding through hole 108 and chi plate stepped hole 109 successively, and pivot pin rivet 100 is by sliding lower plane
61 rotatable are overlapped in plane 16 on chi plate；
First portable plate 10 is made up of the first chi plate part 19 and the first dial portion 18, and the second portable plate 20 is by second
Chi plate part 29 and the second dial portion 28 are formed, and the 3rd portable plate 30 is by the 3rd chi plate part 39 and the 3rd dial portion 38
Formed；
Between the round groove 41 on round protruding rail 14 and the 3rd dial portion 38 in the first described chi plate part 19
For being slidably matched, the round groove 41 on round protruding rail 14 and the first dial portion 18 in the second described chi plate part 29 it
Between for being slidably matched, the round groove 41 on round protruding rail 14 and the second dial portion 28 in the 3rd described chi plate part 39
Between for being slidably matched；
Described the first portable plate 10, the second portable plate 20 and the 3rd portable plate 30 are all using the light-duty conjunction of aluminum molybdenum on the whole
Jin Gang, 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%, balance of al(aluminum) and inevitable impurity；The percentage by weight of described impurity contains
Measure and be: sn(stannum) less than 0.05%, si(silicon) less than 0.20%, mn(manganese) less than 0.25%, s(sulfur) less than 0.010%, p(phosphorus)
Less than 0.015%；The Specifeca tion speeification of the described light-duty alloy steel material of aluminum molybdenum is: Rockwell hardness hrc value is 44～46, close
Spend for 3.1 to 3.3 grams per cubic centimeter.
As improvement further: on described chi plate, the distance of plane 16 to described circular protruding rail 14 central axis is
3.4 to 3.6 millimeters, the section radius of circular protruding rail 14 are 3.1 to 3.3 millimeters, the width of described transition raised line 71 be 3.4 to
3.6 millimeter；The distance that described sliding lower plane 61 arrives described circular groove 41 central axis is 3.4 to 3.6 millimeters, described
The section radius of circular groove 41 be 3.1 to 3.3 millimeters, the width of described transition groove 74 is 3.4 to 3.6 millimeters.
As improvement further: the upper surface of described dial portion has arch convex beam 94 peak to sliding lower plane 61
The distance between be 14 to 16 millimeters.
As improvement further: on described scale slope 15 and chi plate, the angle between plane 16 is 47 ~ 49 degree.
As improvement further: 0.24 to 0.26 millimeter described of length scale 51 texture depth.
As improvement further: there are stepped hole angle face 102, the stepped hole angle face of both sides in chi plate stepped hole 109 both sides
Angle between 102 is 55 to 57 degree.
In embodiment, the material composition of the light-duty steel alloy of aluminum molybdenum is: mo(molybdenum): 12%, w (tungsten): 3.2%, cu(copper):
2.2%th, zn(zinc): 1.5%, c(carbon): 1.2%, balance of al(aluminum) and inevitable impurity；The weight percent of described impurity
Than content it is: sn(stannum) be 0.04%, si(silicon) be 0.16%, mn(manganese) be 0.22%, s(sulfur) be 0.007%, p(phosphorus) be
0.012%；The Specifeca tion speeification of the light-duty alloy steel material of aluminum molybdenum is: Rockwell hardness hrc value is 45, and density is per cubic centimeter
3.2 gram.
On chi plate, plane 16 is 3.5 millimeters to the distance of circular protruding rail 14 central axis, the section radius of circular protruding rail 14
For 3.2 millimeters, the width of transition raised line 71 is 3.5 millimeters；
The upper surface of dial portion has arch convex beam 94 peak to be 15 millimeters to the distance between sliding lower plane 61, sliding
The distance moving lower plane 61 to circular groove 41 central axis is 3.5 millimeters, and the section radius of circular groove 41 are 3.2 millimeters,
The width of transition groove 74 is 3.5 millimeters, and circular protruding rail 14 at least one end is unobstructed；
On scale slope 15 and chi plate, the angle between plane 16 is 48 degree, 0.25 millimeter of length scale 51 texture depth,
Processed using electric pulse and 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 sliding lower plane 61 is 45 degree.
Sliding lower plane 61 is in sustained height with plane 16 on the chi of side.
When student is carried out with teaching differentiation, step is as follows:
First, in Fig. 9, after the present invention is combined, develop into equilateral triangle, only need to be by the chi plate portion in every portable plate
Point rotate against with dial portion, by the corner pointer 31 on sliding lower plane 61 back side it was observed that plane 16 on chi plate
On corner scale 13 have rotated 30 degree, that is, between the round protruding rail 14 of every portable plate itself and round groove 41 by 90 degree revolve
Turn and develop into 60, then the scale slope 15 on the scale slope 15 and the second chi plate part 29 in the first chi plate part 19 and the
The angle between scale slope 15 in three chi plate parts 39 is all 60 degree, and equilateral triangle is set up.
2nd, Tu10Zhong, develops into isosceles triangle after the present invention is combined, only need to be by the chi in wherein two portable plates
Plate part and dial portion do the identical anglec of rotation, for example: will be counterclockwise with the 3rd dial portion 38 for the 3rd chi plate part 39
Do 15 degree of the anglec of rotation, the second chi plate part 29 and the second dial portion 28 are also done counterclockwise 15 degree of the anglec of rotation, then
First chi plate part 19 and the first dial portion 18 necessarily do 60 degree of the anglec of rotation counterclockwise, and interior angle is respectively 75 degree and 75
Spend and 30 degree of equilateral triangle is set up.
3rd, Tu11Zhong, develops into right angled triangle after the present invention is combined, only need to be by the chi in wherein portable plate
Plate part and dial portion keep center position not rotate, for example: the second chi plate part 29 is kept with the second dial portion 28
Center position does not rotate, when the 3rd chi plate part 39 and the 3rd dial portion 38 do 60 degree of the anglec of rotation counterclockwise, then first
Chi plate part 19 and the first dial portion 18 necessarily do 30 degree of the anglec of rotation counterclockwise, interior angle be respectively 90 degree and 30 degree with
And 60 degree right angled triangle set up.
4th, Tu12Zhong, develops into isosceles right triangle after the present invention is combined, only need to be by wherein portable plate
Chi plate part and dial portion keep center position not rotate, in addition the chi plate part in two portable plates is with dial portion all
The equidirectional anglec of rotation doing 45 degree, for example: the second chi plate part 29 is kept center position not revolve with the second dial portion 28
Turn, the 3rd chi plate part 39 and the 3rd dial portion 38 done counterclockwise 45 degree of the anglec of rotation, by the second chi plate part 29 and
Second dial portion 28 also does 45 degree of the anglec of rotation counterclockwise, then the isosceles of respectively 90 degree and 45 degree and 45 degree of interior angle are straight
Angle triangle is set up.
The above-mentioned prominent substantive distinguishing features of the present invention, have as follows significantly improve effect:
First, dial portion is located at chi plate part one end and is overlapped on plane in chi plate part, and sliding lower plane 61 and chi
On plate, plane 16 is in sustained height it is ensured that the length scale 51 on three sides is all in same level, it is to avoid error on line of sight；And every
It is to be slidably matched between the round protruding rail 14 on round groove 41 and adjacent activities plate on portable plate, particularly plane on chi plate
Have corner scale 13 corresponding in position with the corner pointer 31 on sliding lower plane 61 back side on 16, can accomplish convenient,
Intuitively control the anglec of rotation between dial portion and chi plate part.
2nd, the present invention adopts three one group of portable composite construction, and disassemble afterwards every time, take up room chi by use for convenience
Very little little, be easy to carry.
3rd, the aluminum molybdenum alloy in lightweight steel of integral light high rigidity of the present invention, has the advantages that lightweight and resistance to deformation.
4th, education activities plate provided by the present invention, has structure simply, easy to use, simultaneously demonstration size, angle
The advantages of spend changeable.
When doing demonstration explanation to student, disposably continuous differentiation puts in place teacher, more vividly understandable so that student
More there is enjoyment in learning process.Do not need the demonstration of multiple set squares, also without repeatedly not of uniform size, angle being drawn on blackboard
Spend different trianglees, to reduce measurement error and to improve teaching efficiency.
Claims (6)
1. aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, including three physical dimension identical first portable plates
(10), the second portable plate (20) and the 3rd portable plate (30), every portable plate is made up of chi plate part and dial portion, and it is special
Levying is:
The upper surface of described dial portion has arch convex beam (94), and the lower surface of described dial portion is sliding lower plane
(61) upper surface of, described chi plate part is plane (16) on chi plate；Sliding through hole (108) is had on sliding lower plane (61),
Chi plate stepped hole (109) is had on plane (16) on chi plate；Round protruding rail (14) is had on plane (16) on chi plate, and circular protruding rail
And centrosymmetric transition raised line (71) is had between plane (16) on chi plate (14)；Sliding lower plane has round groove on (61)
Have centrosymmetric transition groove (74), and between circular groove (41) and sliding lower plane (61) (41)；Plane on chi plate
(16) there is corner scale (13) on, described dial portion has rotating disk chamfering (103), rotating disk chamfering has corner pointer on (103)
(31)；There is scale slope (15) inside plane (16) on chi plate, scale slope (15) also engrave length scale (51)；
Pivot pin rivet (100) passes through sliding through hole (108) and chi plate stepped hole (109) successively, and pivot pin rivet (100) is by under sliding
Plane (61) is rotatable to be overlapped in plane (16) on chi plate；
First portable plate (10) is made up of the first chi plate part (19) and the first dial portion (18), the second portable plate (20) by
Second chi plate part (29) and the second dial portion (28) are formed, and the 3rd portable plate (30) is by the 3rd chi plate part (39) and
Three dial portion (38) are formed；
Round protruding rail (14) in the first described chi plate part (19) and the round groove (41) on the 3rd dial portion (38)
Between circle for being slidably matched, on the round protruding rail (14) in the second described chi plate part (29) and the first dial portion (18)
It is to be slidably matched between type groove (41), the round protruding rail (14) in the 3rd described chi plate part (39) and the second dial portion
(28) it is to be slidably matched between the round groove (41) on；
Described the first portable plate (10), the second portable plate (20) and the 3rd portable plate (30) are all light-duty using aluminum molybdenum on the whole
Steel alloy, 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%, balance of al(aluminum) and inevitable impurity；The percentage by weight of described impurity contains
Measure and be: sn(stannum) less than 0.05%, si(silicon) less than 0.20%, mn(manganese) less than 0.25%, s(sulfur) less than 0.010%, p
(phosphorus) is less than 0.015%；The Specifeca tion speeification of the described light-duty alloy steel material of aluminum molybdenum is: Rockwell hardness hrc value for 44～
46, density is 3.1 to 3.3 grams per cubic centimeter.
2., according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: described chi plate
The distance that upper plane (16) arrives described circular protruding rail (14) central axis is 3.4 to 3.6 millimeters, the section of circular protruding rail (14)
Radius is 3.1 to 3.3 millimeters, and the width of described transition raised line (71) is 3.4 to 3.6 millimeters；Described sliding lower plane
(61) distance arriving described circular groove (41) central axis is 3.4 to 3.6 millimeters, the section of described circular groove (41)
Radius is 3.1 to 3.3 millimeters, and the width of described transition groove (74) is 3.4 to 3.6 millimeters.
3., according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: described rotating disk
Partial upper surface has arch convex beam (94) peak to be 14 to 16 millimeters to the distance between sliding lower plane (61).
4., according to claim 1 aluminium molybdenum alloys round groove corner pointer isoplanar teaching set square, it is characterized in that: described scale
On slope (15) and chi plate, the angle 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: chi plate stepped hole
(109) there is stepped hole angle face (102) both sides, and 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105128572A CN105128572A (en) | 2015-12-09 |
| CN105128572B true CN105128572B (en) | 2017-01-18 |
Family
ID=54714297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| 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 |
| 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 |
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| JPH02126101A (en) * | 1988-11-05 | 1990-05-15 | Sachiko Iida | Freely elongatable and contractable scale |
| JP2001225590A (en) * | 2000-02-18 | 2001-08-21 | Mitsuo Kawashima | Case for triangular scale and manufacturing method therefor |
| CN201109308Y (en) * | 2007-06-21 | 2008-09-03 | 王伟诚 | Adjustable square |
| CN201970704U (en) * | 2011-01-31 | 2011-09-14 | 颜勇 | Adjustable set square |
| CN202080002U (en) * | 2011-06-21 | 2011-12-21 | 赵凌云 | Mathematical teaching aid |
| CN202862938U (en) * | 2012-10-31 | 2013-04-10 | 哈尔滨商业大学 | Triangle for drawing triangles on blackboard |
| CN203004808U (en) * | 2012-12-30 | 2013-06-19 | 杜珂芯 | Combination drawing training aid |
| CN203713324U (en) * | 2013-05-03 | 2014-07-16 | 深圳信息职业技术学院 | Foldable triangular plate |
| CN104354503B (en) * | 2014-11-13 | 2016-08-24 | 北京信息科技大学 | A kind of multifunctional drawing ruler |
| CN204278857U (en) * | 2014-12-02 | 2015-04-22 | 郭伟 | A kind of Multifunctional math teaching aid |
| CN204547483U (en) * | 2014-12-31 | 2015-08-12 | 卢慧美 | Multifunctional teaching gauge |
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