CN105196752A - Aluminium molybdenum alloy circular groove corner pointer adjusting teaching set square - Google Patents
Aluminium molybdenum alloy circular groove corner pointer adjusting teaching set square Download PDFInfo
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- CN105196752A CN105196752A CN201510788591.8A CN201510788591A CN105196752A CN 105196752 A CN105196752 A CN 105196752A CN 201510788591 A CN201510788591 A CN 201510788591A CN 105196752 A CN105196752 A CN 105196752A
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- plane
- pearl seat
- chi
- sliding pearl
- hole
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- 229910001182 Mo alloy Inorganic materials 0.000 title claims abstract description 29
- ZXTFQUMXDQLMBY-UHFFFAOYSA-N alumane;molybdenum Chemical compound [AlH3].[Mo] ZXTFQUMXDQLMBY-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 230000007704 transition Effects 0.000 claims description 17
- 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
- 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
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000002459 sustained effect Effects 0.000 claims description 5
- 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
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 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
- 230000006872 improvement Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 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
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to a special teaching set square and in particular relates to a aluminium molybdenum alloy circular groove corner pointer adjusting teaching set square which is characterized in that hole plane hasps are arranged on edge set square stepped holes; stepped screws comprise screw large head ends and screw cylindrical sections; screw plane hasps are arranged on the inner planes of the screw large head ends; one ends of cylinder springs are fixed on the screw plane hasps; the other ends of the cylinder springs are fixed on the hole plane hasps; the stepped screws pass through rotation through holes and the edge set square stepped holes in sequence; butterfly-shaped nuts are in fit with the outer thread ends of the stepped screws; the lower planes of sliding plates are in lapping joint on the upper planes of edge set squares in a rotation manner; the stepped screws are in clearance fit with the rotation through holes and the edge set square stepped holes; one ends of the cylinder springs are fixed on the screw plane hasps; the other ends of the cylinder springs are fixed on the hole plane hasps; butterfly-shaped spokes are supported on screw stepped surfaces; and by combination of the adjusting function of butterfly-shaped nuts, the rotation can be realized in a state that frictional resistance exists in the upper plane of the edge set square in each movable plate and the lower plane of the corresponding sliding plate.
Description
Technical field
The present invention relates to the upper Special set square of a kind of teaching, International Classification of Patents is B43L, particularly relates to aluminium molybdenum alloys round groove corner pointer and adjusts 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 grooved rail, set square is carried out to the design of isoplanar free of discontinuities adjustment, achieves the angle that sizes is different, can share aluminium molybdenum alloys round groove corner pointer and adjust teaching set square, a step accurately puts in place.Specific as follows:
Aluminium molybdenum alloys round groove corner pointer adjusts teaching set square, and 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 chi plate portion and dial portion; 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, round protruding rail on the 3rd described chi plate portion and between the round groove on the second dial portion for being slidably matched, it is characterized in that:
The upper surface of described dial portion has the convex beam of arch, and the lower surface of described dial portion is slide plate lower plane, and the upper surface of described chi plate portion is plane on the chi of limit; Slide plate lower plane there is slippage through hole, limit chi plane has chi plate stepped hole; Plane there is round protruding rail with limit chi, circular protruding rail and limit chi have centrosymmetric transition raised line between plane; Slide plate lower plane there is round groove, and has centrosymmetric transition groove between circular groove and slide plate lower plane; Plane has corner scale with limit chi, and described dial portion has rotating disk chamfering, rotating disk chamfering has corner pointer; On the chi of limit, planar inner has scale slope, and length scale is also engraved on scale slope;
Described limit chi stepped hole there are three to five hole plane lugs, stepped screw there are screw stub end and screw cylindrical section, screw stub end inner plane there are three to five screw plane lugs, cylindrical spring one end is fixed on described screw plane lug, and the cylindrical spring other end is fixed on described hole plane lug;
Described stepped screw passes through described rotation through hole and described limit chi stepped hole successively, wing nut coordinates with described stepped screw male end, to be overlapped on the chi of limit in plane by rotatable for slide plate lower plane, on described slide plate lower plane and described limit chi, plane is in sustained height, described stepped screw and rotate between through hole and limit chi stepped hole and be matched in clearance;
Described slide plate lower plane has pearl seat stepped hole, pearl seat stepped hole is arranged symmetrically in described transition groove both sides, in pearl seat stepped hole, step has stepped hole plane, and stepped hole planar central has pearl seat blind hole; In sliding pearl seat, half is measure-alike with the outer half shape and structure of sliding pearl seat, all include sliding pearl seat cylindrical, sliding pearl seat faying face, sliding pearl seat lateral surface, sliding pearl seat faying face there is circular hole in sliding pearl seat, in sliding pearl seat, circular hole bottom is connected to sliding pearl seat internal taper hole stub end, and the little head end of sliding pearl seat internal taper hole is crossing with described sliding pearl seat lateral surface;
Described pearl seat stepped hole inner circle is fixed wtih the sliding pearl seat cylindrical in sliding pearl seat cylindrical in sliding pearl seat in half and the outer half of sliding pearl seat simultaneously, the sliding pearl seat internal taper hole in sliding pearl seat in half and be slidably matched between the sliding pearl seat internal taper hole sliding outside pearl seat in half and be fixed wtih slippage ball; In sliding pearl seat lateral surface on slippage ball in outstanding described sliding pearl seat in half, outstanding sphere is accommodated among described pearl seat blind hole; Plane contact on the outer outstanding sphere of the sliding pearl seat lateral surface of sliding pearl seat outstanding described on slippage ball outward in half and described limit chi;
The first described adjustable rule, the second adjustable rule and the 3rd adjustable rule are all adopt aluminum alloy materials on the whole, plane there is described limit chi a layer thickness be the hard aluminium molybdenum alloys coating of 0.21 to 0.23 millimeter, this hard aluminium molybdenum alloys material is made up of the element of following percentage by weight: Mo(molybdenum): 11 ~ 13%, W (tungsten): 5.5 ~ 5.7%, 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%.
Aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: on described limit chi, plane is 3.4 to 3.6 millimeters to the distance of described circular protruding rail central axis, 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 slide plate 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.
Aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: the upper surface of described dial portion has the distance between arch convex beam peak to slide plate lower plane to be 14 to 16 millimeters.
Aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: the angle on described scale slope and limit chi between plane is 47 ~ 49 degree.
Aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: described length scale texture depth 0.24 to 0.26 millimeter.
Aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: there is stepped hole angle face chi plate stepped hole both sides, and 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 slide plate lower plane and limit chi, 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 limit chi corner scale corresponding in position with the corner pointer on the slide plate lower plane back side, convenient, intuitively between control dial portion and chi plate portion the anglec of rotation can be accomplished; Pearl seat stepped hole internal fixtion particularly on slide plate lower plane slippage ball; Plane contact on the outer outstanding sphere of slippage ball and described limit chi, make the slide plate lower plane in each portable plate relative on the limit chi in another portable plate between plane slippage more easily smooth; Cylindrical spring one end is fixed on described screw plane lug, and the cylindrical spring other end is fixed on described hole plane lug, and the holder of butterfly spring spoke on screw step surface; In conjunction with wing nut regulating action, guarantee on the limit chi in each portable plate rotatable under the state with frictional resistance between plane and the slide plate lower plane of self.
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, education activities plate provided by the present invention, has structure simple, easy to use, demonstrates the advantages such as size, angle are changeable simultaneously.
Four, the present invention's entirety adopts aluminum alloy materials, and plane 16 is electroplate with hard aluminium molybdenum alloys with limit chi, has lightweight and that wearability is strong two-fold advantage.
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.
Figure 14 is the partial enlarged drawing at cylindrical spring 110 position in Figure 13.
Figure 15 is the partial enlarged drawing at wherein cylindrical spring 110 position in Figure 14.
Figure 16 is the partial enlarged drawing at slippage ball 80 position in Figure 13.
Figure 17 unloads the state diagram except sliding pearl seat after half 82 in the pearl seat stepped hole 58 in Figure 16.
Figure 18 is the partial enlarged drawing of the outer half 82 of sliding pearl seat in Figure 16.
Figure 19 unloads the state diagram except half 81 in sliding pearl seat and sliding pearl seat after half 82 in the pearl seat stepped hole 58 in Figure 16.
Detailed description of the invention
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8,13 and Figure 14 in: aluminium molybdenum alloys round groove corner pointer adjust teaching set square, 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 chi plate portion and dial portion;
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, 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 improvement:
The upper surface of described dial portion has the convex beam 94 of arch, and the lower surface of described dial portion is slide plate lower plane 61, and the upper surface of described chi plate portion is plane 16 on the chi of limit; Slide plate lower plane 61 there is slippage through hole 108, limit chi plane 16 has chi plate stepped hole 109; Limit chi plane 16 there is round protruding rail 14, circular protruding rail 14 and limit chi have centrosymmetric transition raised line 71 between plane 16; Slide plate lower plane 61 there is round groove 41, and between circular groove 41 and slide plate lower plane 61, have centrosymmetric transition groove 74; Plane 16 has corner scale 13 with limit chi, and described dial portion has rotating disk chamfering 103, rotating disk chamfering 103 has corner pointer 31; Limit chi there is scale slope 15 inside plane 16, scale slope 15 is also engraved length scale 51;
Described limit chi stepped hole 109 there are three to five hole plane lugs 117, stepped screw 100 there are screw stub end 119 and screw cylindrical section 118, screw stub end 119 inner plane there are three to five screw plane lugs 112, cylindrical spring 110 one end is fixed on described screw plane lug 112, and cylindrical spring 110 other end is fixed on described hole plane lug 117;
Described stepped screw 100 passes through described rotation through hole 108 and described limit chi stepped hole 109 successively, wing nut 120 coordinates with described stepped screw 100 male end, to be overlapped on the chi of limit in plane 16 by rotatable for slide plate lower plane 61, described slide plate lower plane 61 is in sustained height with plane 16 on described limit chi, described stepped screw 100 and rotate between through hole 108 and limit chi stepped hole 109 and be matched in clearance;
Described slide plate lower plane 61 has pearl seat stepped hole 58, pearl seat stepped hole 58 is arranged symmetrically in described transition groove 74 both sides, in pearl seat stepped hole 58, step has stepped hole plane 57, and there is pearl seat blind hole 59 at stepped hole plane 57 center; In sliding pearl seat, half 81 is measure-alike with outer half 82 shape and structure of sliding pearl seat, all include sliding pearl seat cylindrical 86, sliding pearl seat faying face 84, sliding pearl seat lateral surface 85, sliding pearl seat faying face 84 there is circular hole 88 in sliding pearl seat, in sliding pearl seat, circular hole 88 bottom is connected to sliding pearl seat internal taper hole 83 stub end, and the little head end of sliding pearl seat internal taper hole 83 is crossing with described sliding pearl seat lateral surface 85;
Described pearl seat stepped hole 58 inner circle is fixed wtih the sliding pearl seat cylindrical 86 in sliding pearl seat cylindrical 86 in sliding pearl seat in half 81 and the outer half 82 of sliding pearl seat simultaneously, the sliding pearl seat internal taper hole 83 in sliding pearl seat in half 81 and be slidably matched between the sliding pearl seat internal taper hole 83 sliding outside pearl seat in half 82 and be fixed wtih slippage ball 80; In sliding pearl seat lateral surface 85 on slippage ball 80 in outstanding described sliding pearl seat in half 81, outstanding sphere 98 is accommodated among described pearl seat blind hole 59; The outer outstanding sphere 89 of the sliding pearl seat lateral surface 85 on slippage ball 80 in the outer half 82 of outstanding described sliding pearl seat contacts with plane 16 on described limit chi;
The first described adjustable rule 10, second adjustable rule 20 and the 3rd adjustable rule 30 are all adopt aluminum alloy materials on the whole, plane 16 there is described limit chi a layer thickness be the hard aluminium molybdenum alloys coating of 0.21 to 0.23 millimeter, this hard aluminium molybdenum alloys material is made up of the element of following percentage by weight: Mo(molybdenum): 11 ~ 13%, W (tungsten): 5.5 ~ 5.7%, 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%.
As further improvement: on described limit chi, 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 slide plate 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 slide plate lower plane 61 to be 14 to 16 millimeters.
As further improvement: the angle on described scale slope 15 and limit chi 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, plane 16 there is described limit chi a layer thickness be the hard aluminium molybdenum alloys coating of 0.22 millimeter, this hard aluminium molybdenum alloys material is made up of the element of following percentage by weight: Mo(molybdenum): 12%, W (tungsten): 5.6%, 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 described hard aluminium molybdenum alloys material is: Rockwell hardness HRC value is 47, and density is 2.94 grams every cubic centimetre.
On the chi of limit, 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 slide plate lower plane 61 to be 15 millimeters, the distance of slide plate 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 at least one end is unobstructed for circular protruding rail 14;
Angle on scale slope 15 and limit chi 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 slide plate lower plane 61 is 45 degree.
In Figure 13, Figure 16, Figure 17, Figure 18 and Figure 19: mounting slip ball 80 in eight pearl seat stepped holes 58 on slide plate lower plane 61, adopt following steps:
One, half 81 in sliding pearl seat is placed in the low temperature chest of subzero 125 degree of Celsius temperature together with the outer half 82 of sliding pearl seat, continues 55 minutes, make half 81 and the outer half 82 of sliding pearl seat in sliding pearl seat cool rear size and reduce;
Two, first by slide plate lower plane 61 upward, successively half 81 in cunning pearl seat is arranged in pearl seat stepped hole 58 again, the sliding pearl seat lateral surface 85 in the sliding pearl seat in each pearl seat stepped hole 58 in half 81 is made to touch stepped hole plane 57, when in sliding pearl seat, half 81 returns to normal temperature state, the sliding pearl seat cylindrical 86 in sliding pearl seat in half 81 and have between pearl seat stepped hole 58 0.04 to 0.06 interference fit;
Three, successively slippage ball 80 to be placed in the sliding pearl seat in each sliding pearl seat in half 81 among circular hole 88;
Four, successively outer for cunning pearl seat half 82 is arranged in pearl seat stepped hole 58, make the sliding pearl seat faying face 84 in the outer half 82 of sliding pearl seat touch sliding pearl seat faying face 84 in sliding pearl seat in half 81, slippage ball 80 rides in the sliding pearl seat internal taper hole 83 in sliding pearl seat in half 81 and slides half 82 outside pearl seat and makes to slide spacing rolling between pearl seat internal taper hole 83; When the outer half 82 of sliding pearl seat returns to normal temperature state, sliding pearl seat cylindrical 86 in the outer half 82 of sliding pearl seat and have between pearl seat stepped hole 58 0.04 to 0.06 interference fit, the sliding pearl seat lateral surface 85 in the outer half 82 of sliding pearl seat and described slide plate lower plane 61 fair.
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 slide plate lower plane 61 back side, the corner scale 13 observed on the chi of limit 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 slide plate lower plane 61 is in sustained height with plane 16 on the chi of limit, 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 limit chi corner scale 13 corresponding in position with the corner pointer 31 on slide plate lower plane 61 back side, convenient, intuitively between control dial portion and chi plate portion the anglec of rotation can be accomplished; Pearl seat stepped hole 58 internal fixtion particularly on slide plate lower plane 61 slippage ball 80; The outer outstanding sphere 89 of slippage ball 80 contacts with plane 16 on described limit chi, make the slide plate lower plane 61 in each portable plate relative on the limit chi in another portable plate between plane 16 slippage more easily smooth; Cylindrical spring 110 one end is fixed on described screw plane lug 112, and cylindrical spring 110 other end is fixed on described hole plane lug 117, and butterfly spring spoke 114 holds in the palm on screw step surface 112; In conjunction with wing nut 120 regulating action, guarantee on the limit chi in each portable plate rotatable under the state with frictional resistance between plane 16 and the slide plate lower plane 61 of self.
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, education activities plate provided by the present invention, has structure simple, easy to use, demonstrates the advantages such as size, angle are changeable simultaneously.
Four, the present invention's entirety adopts aluminum alloy materials, and plane 16 is electroplate with hard aluminium molybdenum alloys with limit chi, has lightweight and that wearability is strong two-fold advantage.
In addition, 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 adjusts 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; 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, 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, 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 slide plate lower plane (61), and the upper surface of described chi plate portion is plane (16) on the chi of limit; Slide plate lower plane (61) there is slippage through hole (108), plane (16) has chi plate stepped hole (109) with limit chi; Plane (16) there is round protruding rail (14) with limit chi, circular protruding rail (14) and limit chi have centrosymmetric transition raised line (71) between plane (16); Slide plate lower plane (61) there is round groove (41), and have centrosymmetric transition groove (74) between circular groove (41) and slide plate lower plane (61); Plane (16) has corner scale (13) with limit chi, and described dial portion has rotating disk chamfering (103), rotating disk chamfering (103) has corner pointer (31); On the chi of limit, there is scale slope (15) plane (16) inner side, scale slope (15) also engraves length scale (51);
Described limit chi stepped hole (109) there are three to five holes plane lug (117), stepped screw (100) there are screw stub end (119) and screw cylindrical section (118), screw stub end (119) inner plane there are three to five screw plane lugs (112), cylindrical spring (110) one end is fixed on described screw plane lug (112), and cylindrical spring (110) other end is fixed on described hole plane lug (117);
Described stepped screw (100) passes through described rotation through hole (108) and described limit chi stepped hole (109) successively, wing nut (120) coordinates with described stepped screw (100) male end, to be overlapped on the chi of limit in plane (16) by rotatable for slide plate lower plane (61), on described slide plate lower plane (61) and described limit chi, plane (16) is in sustained height, and described stepped screw (100) is matched in clearance with between rotation through hole (108) and limit chi stepped hole (109);
Described slide plate lower plane (61) there is pearl seat stepped hole (58), pearl seat stepped hole (58) is arranged symmetrically in described transition groove (74) both sides, pearl seat stepped hole (58) interior step has stepped hole plane (57), there is pearl seat blind hole (59) at stepped hole plane (57) center; In cunning pearl seat, half (82) shape and structure is measure-alike outward for half (81) and sliding pearl seat, all include sliding pearl seat cylindrical (86), sliding pearl seat faying face (84), sliding pearl seat lateral surface (85), sliding pearl seat faying face (84) there is circular hole (88) in sliding pearl seat, in sliding pearl seat, circular hole (88) bottom is connected to sliding pearl seat internal taper hole (83) stub end, and sliding pearl seat internal taper hole (83) little head end is crossing with described sliding pearl seat lateral surface (85);
Described pearl seat stepped hole (58) inner circle is fixed wtih the sliding pearl seat cylindrical (86) in sliding pearl seat cylindrical (86) in sliding pearl seat in half (81) and the outer half (82) of sliding pearl seat simultaneously, the sliding pearl seat internal taper hole (83) in sliding pearl seat in half (81) and be slidably matched between the sliding pearl seat internal taper hole (83) sliding outside pearl seat in half (82) and be fixed wtih slippage ball (80); The inner outstanding sphere (98) of sliding pearl seat lateral surface (85) in the upper outstanding described sliding pearl seat of slippage ball (80) in half (81) is accommodated among described pearl seat blind hole (59); The outer outstanding sphere (89) of the sliding pearl seat lateral surface (85) in the outer half (82) of the upper outstanding described sliding pearl seat of slippage ball (80) contacts with plane (16) on described limit chi;
Described the first adjustable rule (10), the second adjustable rule (20) and the 3rd adjustable rule (30) are all adopt aluminum alloy materials on the whole, plane (16) there is described limit chi a layer thickness be the hard aluminium molybdenum alloys coating of 0.21 to 0.23 millimeter, this hard aluminium molybdenum alloys material is made up of the element of following percentage by weight: Mo(molybdenum): 11 ~ 13%, W (tungsten): 5.5 ~ 5.7%, 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%.
2. aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: on described limit chi, 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 slide plate 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.
3. aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts 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 slide plate lower plane (61) to be 14 to 16 millimeters.
4. aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: the angle on described scale slope (15) and limit chi between plane (16) is 47 ~ 49 degree.
5. aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts teaching set square, it is characterized in that: described length scale (51) texture depth 0.24 to 0.26 millimeter.
6. aluminium molybdenum alloys according to claim 1 round groove corner pointer adjusts 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.
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| CN105196752B (en) | 2016-09-21 |
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