CN208796468U - It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle - Google Patents
It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle Download PDFInfo
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- CN208796468U CN208796468U CN201820657960.9U CN201820657960U CN208796468U CN 208796468 U CN208796468 U CN 208796468U CN 201820657960 U CN201820657960 U CN 201820657960U CN 208796468 U CN208796468 U CN 208796468U
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- face
- projection plate
- connecting rod
- guide rail
- cylindrical body
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Abstract
The utility model provides a kind of Teaching Instruction of Engineering Graphics device for visually demonstrating and changing face method principle, belongs to Teaching Instruction of Engineering Graphics field.The device includes connecting rod and gear mechanism, projection plate lifting mechanism, the face H projection plate, once changes the face V projection plate, secondary changes the face V projection plate and point-line-surface device.Pass through the mutual cooperation of connecting rod and gear mechanism and projection plate lifting mechanism, it realizes the face H projection plate, once change the face V projection plate, the secondary opposite overturning changed between the projection plate of the face V and move, and pass through the replacement of bulb, square toes, cylinder rod in point-line-surface device, realize projection of the space point, line, surface on projection plate in geometry, it is drawn on projection plate holding paper after projection with pencil, the principle of face method can be intuitively changed for student's demonstration.The mechanism kinematic completeness of the present apparatus is good, and mechanism kinematic part coupling part is easy to assemble, easy-maintaining, the service life is long, has good practicability.
Description
Technical field
The utility model belongs to Teaching Instruction of Engineering Graphics field, and in particular to a kind of to visually demonstrate the engineering drawing for changing face method principle
Learn instructional device.
Background technique
Engineering Drawing coverage is especially wide, it is an important technical links of modern industry, it may be said that does not have work
Cheng Tu, the birth for the modern industry just not standardized.Engineering Drawing subject is not only the basis of many engineer applications, and divides
Analysis problem, solution to the problem basis.As this characteristic of basic subject, " Engineering Drawing " mainly descriptive geometry is used in research
Theory solves the problems, such as space geometry, provides the theoretical basis of science, training student graphics thinking theory and expression to figure
Ability improves Students ' Engineering Quality.Common papery wall chart, writing on the blackboard and single mock-up, intuitive is strong, but relatively more single
One, it is inconvenient to carry.Now with class hour reduce, in classroom teaching, said content is limited, cannot be introduced in finite time compared with
More contents.Changing face method is that the knowledge of intuitivism apprehension is not easy in descriptive geometry, and to improve autonomous ability, culture figure is thought
Dimension, enables the teaching of graphics education more intuitively to show figure, it is necessary to design novel religion on original teaching basis
Tool improves teaching efficiency, meanwhile, the transformation that student is learnt the thinking to Practical learning from books is completed, abstract thinking is cultivated
Comprehensive, jumping characteristic, novelty.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of Engineering Drawing for visually demonstrating and changing face method principle
Instructional device.
The technical solution of the utility model includes:
A kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle, which includes connecting rod and gear mechanism, throwing
Shadow plate lifting mechanism, once changes the face V projection plate, secondary changes the face V projection plate and point-line-surface mechanism the face H projection plate；
The connecting rod and gear mechanism include rack gear, gear, first connecting rod, second connecting rod, third connecting rod, fourth link,
Sliding block, guide rail, link block, support, fixed plate and connector；Rack gear, first connecting rod, second connecting rod, third/fourth link head and the tail
Revolute pair is passed sequentially through to be connected；Wherein, rack gear and second connecting rod are horizontally disposed, first connecting rod and the vertical cloth of third/fourth link
It sets；Gear is placed on rack gear；Fixed plate is arranged by connector on second connecting rod；The bottom end of third connecting rod and fourth link difference
The two sides of second connecting rod are connected to, top is converged by a crossbeam；Sliding block is respectively set in the both ends of crossbeam, passes through and leads in sliding block
Rail, it is ensured that sliding block can be rotated around crossbeam, can also be slided along guide rail；Link block is arranged in the top of guide rail, for fixing the projection of the face H
Support is arranged in the lower section of plate, guide rail, for the positioning after the overturning of the face H projection plate；
The projection plate lifting mechanism includes small cuboid block, cylindrical body guide rail, sleeve, protractor, once changes the projection of the face V
Plate and hinge；Totally two, cylindrical body guide rail, the bottom end of cylindrical body guide rail is connected by screw thread with small cuboid block, each cylindrical body
Two sleeves up and down are arranged on guide rail, sleeve and the edge for once changing the face V projection plate are welded the thin slice with through-hole, passed through
Bolt realizes sleeve and once changes the connection of the face V projection plate, thus by once changing the face V projection plate is set to two cylindrical body guide rails
Between；The two sides for once changing the face V projection plate pass through hinge and are connected with the secondary face the V projection plate that changes；When once change the face V projection plate to
When side rotates, the sleeve disassembly of other side connection, realization once changes the face V projection plate around the relative rotation of cylindrical body guide rail；
Protractor is fixed on cylindrical body guide rail, positioned at once changing below the projection plate of the face V, once changes the face V projection plate and point for measuring
The angle of long cylinder body rod in Xian Mian mechanism；
The point-line-surface mechanism includes pedestal, long struts, long cylinder body rod, bulb, short cylindrical body rod, linkage and side
Head；Pedestal is set on the projection plate of the face H by screw, and long struts are set on pedestal by screw thread, and long cylinder body rod is laterally set
It sets in long struts, short cylindrical body rod is arranged on long cylinder body rod by linkage；When needing to indicate point, in long cylinder
Assemble bulb in the end of body rod；When needing to indicate line, only indicated with long cylinder body rod；When needing to indicate face, in long cylinder
Square toes are assembled in the end of body rod and short cylindrical body rod, and plane is fixed on square toes by magnet.
The cylindrical body guide rail is telescopic rod, including extension bar and fixed link, at elongation to maximum extension bar
If an aperture, a raised spring leaf, when extension bar extends to the limit, the raised bullet of fixed link are set at corresponding fixed link
Reed slides into the aperture of extension bar, completes the fixation of extension bar.
It is lectured the utility model has the beneficial effects that the present apparatus can break through traditional PPT, so that illustrative enhancing is lectured, it is real
Object model is simple and portable use is convenient.It can be adapted for the secondary of point, line, surface and change face projection.Present apparatus mechanism kinematic is completed
It spends, mechanism kinematic part coupling part is easy to assemble, and it is easy-maintaining, and the service life is long.
Detailed description of the invention
Fig. 1 is a kind of Teaching Instruction of Engineering Graphics schematic device for visually demonstrating and changing face method principle.
Fig. 2 is the face H rotating device schematic diagram.
Fig. 3 is riser schematic diagram.
Fig. 4 is telescopic rod telescopic section schematic diagram.
Fig. 5 is sleeve schematic diagram.
Fig. 6 is once to change the secondary face the V projection plate that changes of the face V projection plate rotation to rotate 270 degree of schematic diagrames.
Fig. 7 is point-line-surface constructing apparatus schematic diagram.
In figure: 1 connecting rod and gear mechanism；2 projection plate lifting mechanisms；The face 3H projection plate；4 once change the face V projection plate；5 two
It is secondary to change the face V projection plate；6 point-line-surface mechanisms；11 rack gears；12 gears；13 first connecting rods；14 second connecting rods；15a third connecting rod；15b
Fourth link；16 sliding blocks；17 guide rails；18 link blocks；19 supports；110 fixed plates；111 connectors；21 small cuboid blocks；22 circles
Cylinder guide rail；23 sleeves；24 protractors；26 hinges；221 raised spring leafs；61 pedestals；62 long struts；63 long cylinder body rods；64
Bulb；65 short cylindrical body rods；66 linkages；67 square toes.
Specific embodiment
The technical solution of the utility model is further described below according to specific embodiment.
A kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle, which includes connecting rod and gear mechanism 1, throws
Shadow plate lifting mechanism 2, once changes the face V projection plate 4, secondary changes the face V projection plate 5 and point-line-surface mechanism 6 face H projection plate 3；
The connecting rod and gear mechanism 1 include rack gear 11, gear 12, first connecting rod 13, second connecting rod 14, third connecting rod
15a, fourth link 15b, sliding block 16, guide rail 17, link block 18, support 19, fixed plate 110 and connector 111；Rack gear 11,
One connecting rod 13, second connecting rod 14, third/fourth link 15a/15b head and the tail pass sequentially through revolute pair and are connected；Wherein, 11 He of rack gear
Second connecting rod 14 is horizontally disposed, and first connecting rod 13 and third/fourth link 15a/15b are arranged vertically；Gear 12 is placed in rack gear 11
On；Fixed plate 110 is arranged by connector 111 on second connecting rod 14；The bottom end of third connecting rod 15a and fourth link 15b difference
The two sides of second connecting rod 14 are connected to, top is converged by a crossbeam；The both ends of crossbeam are respectively set sliding block 16, in sliding block 16
Across guide rail 17, it is ensured that sliding block 16 can be rotated around crossbeam, can also be slided along guide rail 17；Link block is arranged in the top of guide rail 17
18, for fixing the face H projection plate 3, support 19 is arranged in the lower section of guide rail 17, the positioning after overturning for the face H projection plate 3；
The projection plate lifting mechanism 2 includes small cuboid block 21, cylindrical body guide rail 22, sleeve 23, protractor 24, primary
Change the face V projection plate 4 and hinge 26；Totally two, cylindrical body guide rail 22, the bottom end of cylindrical body guide rail 22 passes through screw thread and small cuboid
Block 21 is connected, and two sleeves 23 up and down, sleeve 23 and the edge for once changing the face V projection plate 4 are arranged on each cylindrical body guide rail 22
Place's welding has the thin slice of through-hole, realizes sleeve 23 by bolt and once changes the connection of the face V projection plate 4, thus by primary
The face V projection plate is changed to be set between two cylindrical body guide rails 22；The two sides for once changing the face V projection plate 4 pass through hinge 26 and two
The secondary face the V projection plate 5 that changes is connected；When once changing the face V projection plate 4 to when the rotation of side, the sleeve 23 of other side connection is dismantled, real
The face V projection plate 4 is now once changed around the relative rotation of cylindrical body guide rail 22；Protractor 24 is fixed on cylindrical body guide rail 22, is located at
4 lower section of the face V projection plate is once changed, for measuring the folder for once changing long cylinder body rod 63 in the face V projection plate 4 and point-line-surface mechanism 6
Angle；
The point-line-surface mechanism 6 include pedestal 61, long struts 62, long cylinder body rod 63, bulb 64, short cylindrical body rod 65,
Linkage 66 and square toes 67；Pedestal 61 is set on the face H projection plate 3 by screw, and long struts 62 are set to bottom by screw thread
On seat 61, long cylinder body rod 63 is horizontally installed in long struts 62, and short cylindrical body rod 65 is arranged by linkage 66 oval
On cylinder bar 63；When needing to indicate point, bulb 64 is assembled in the end of long cylinder body rod 63；When needing to indicate line, only use
Long cylinder body rod 63 indicates；When needing to indicate face, square toes 67 are assembled in the end of long cylinder body rod 63 and short cylindrical body rod 65,
Plane is fixed on square toes 67 by magnet.
The cylindrical body guide rail 22 is telescopic rod, including extension bar and fixed link, in elongation to maximum extension bar
Place sets an aperture, and a raised spring leaf 221, when extension bar extends to the limit, fixed link are set at corresponding fixed link
Raised spring leaf 221 slides into the aperture of extension bar, completes the fixation of extension bar.
Working principle is as follows:
Face method principle changed for the face V, when original operating state, cylindrical body guide rail 22 is in retracted state, once changes the throwing of the face V
Shadow plate 4 is in non-propradation, and the secondary face the V projection plate 5 that changes is in non-rotation status.When start-up operation, first by point-line-surface mechanism 6
It is placed in 3 plane of the face H projection plate, stretches cylindrical body guide rail 22 to topmost, blocked with raised spring leaf 221 and do not fallen,
The face V projection plate 4 will once be changed again to rise by sleeve 23, suitable projection plate direction is selected according to point-line-surface mechanism 6, is revolved manually
Lower side sleeve 23 and the bolt for once changing the connection of the face V projection plate 4, then the rotation of protractor 24 is changed into the face V projection plate 4 to primary
Horizontal position, can be manually rotated once that change the face V projection plate 4 parallel with the long cylinder body rod 63 of point-line-surface mechanism 6, and record rotation angle
Degree, then the secondary face the V projection plate 5 that changes is rotated outward 270 °, realization is secondary to change face, by light projection, by subpoint, line projection
On projection plate, drawn on projection plate holding paper with pencil.Drafting finishes, and withdraws each mechanism according to work reverse-order, repeats
The point, line, surface of other positions change face method similarly.
Face method principle changed for the face H, when original state, each rod piece is static, and when work, gear 11 is driving link, gear 11
Rotation band carry-over bar 12 is mobile, passes through first connecting rod 13, second connecting rod 14, third connecting rod 15a, fourth link 15b, band movable slider
16 move on guide rail 17, while realizing that guide rail 17 is rotated around sliding block 16.First connecting rod 13, second connecting rod 14, third connecting rod
It is connected by a hinge between 15a, fourth link 15b, forms revolute pair, prismatic pair, guide rail 17 are formed between sliding block 16 and guide rail 17
Form revolute pair between support 19, link block 18 is ined succession the face H projection plate 3 above, below and guide rail 17 be connected.Connector 111 is logical
Cross fixed plate 110 connecting rod and gear mechanism 1 is fixed, fixed plate 110 finally rides in cuboid framework and fixed.When needing reality
When now once changing the face H, with 4 usage mode of the face V projection plate is once changed, using dotted line surface member, and drawn.Drafting finishes,
Each mechanism is withdrawn according to work reverse-order, repeat the point, line, surface of other positions changes face method similarly.
Claims (2)
1. a kind of visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle, which is characterized in that the device includes connecting rod and tooth
Wheel mechanism (1), the face H projection plate (3), once changes the face V projection plate (4), secondary changes the face V projection plate projection plate lifting mechanism (2)
(5) and point-line-surface mechanism (6)；
The connecting rod and gear mechanism (1) include rack gear (11), gear (12), first connecting rod (13), second connecting rod (14), third
Connecting rod (15a), fourth link (15b), sliding block (16), guide rail (17), link block (18), support (19), fixed plate (110) and company
Junctor (111)；Rack gear (11), first connecting rod (13), second connecting rod (14), third/fourth link (15a/15b) head and the tail successively lead to
Revolute pair is crossed to be connected；Wherein, rack gear (11) and second connecting rod (14) are horizontally disposed, first connecting rod (13) and third/fourth link
(15a/15b) is arranged vertically；Gear (12) is placed on rack gear (11)；It is solid by connector (111) setting on second connecting rod (14)
Fixed board (110)；The bottom end of third connecting rod (15a) and fourth link (15b) is connected to the two sides of second connecting rod (14), top
Converged by a crossbeam；The both ends of crossbeam are respectively set sliding block (16), pass through guide rail (17) in sliding block (16), it is ensured that sliding block
(16) it can rotate around crossbeam, can also be slided along guide rail (17)；Link block (18) are arranged in the top of guide rail (17), for fixing H
Support (19) are arranged in the lower section of face projection plate (3), guide rail (17), for the positioning after the face H projection plate (3) overturning；
The projection plate lifting mechanism (2) includes small cuboid block (21), cylindrical body guide rail (22), sleeve (23), protractor
(24), the face V projection plate (4) and hinge (26) are once changed；Totally two, cylindrical body guide rail (22), the bottom end of cylindrical body guide rail (22) is logical
It crosses screw thread to be connected with small cuboid block (21), two sleeves (23) up and down, sleeve (23) is arranged on each cylindrical body guide rail (22)
The thin slice with through-hole is welded with the edge for once changing the face V projection plate (4), sleeve (23) is realized by bolt and once changes
The connection of the face V projection plate (4), to be set to once the face V projection plate (4) is changed between two cylindrical body guide rails (22)；Once
The two sides for changing the face V projection plate (4) pass through hinge (26) and are connected with the secondary face the V projection plate (5) that changes；The face V projection plate is changed when primary
(4) when rotating to side, sleeve (23) disassembly of other side connection, realization once changes the face V projection plate (4) around cylindrical body guide rail
(22) relative rotation；Protractor (24) is fixed on cylindrical body guide rail (22), positioned at once changing below the face V projection plate (4), is used
The angle of long cylinder body rod (63) in the face V projection plate (4) and point-line-surface mechanism (6) is once changed in measurement；
The point-line-surface mechanism (6) includes pedestal (61), long struts (62), long cylinder body rod (63), bulb (64), short cylinder
Bar (65), linkage (66) and square toes (67)；Pedestal (61) is set on the face H projection plate (3) by screw, long struts (62)
It is set on pedestal (61) by screw thread, long cylinder body rod (63) is horizontally installed on long struts (62), short cylindrical body rod (65)
It is arranged on long cylinder body rod (63) by linkage (66)；When needing to indicate point, in the end of long cylinder body rod (63)
It assembles bulb (64)；When needing to indicate line, only indicated with long cylinder body rod (63)；When needing to indicate face, in elongated cylinder
Square toes (67) are assembled in the end of bar (63) and short cylindrical body rod (65), and plane is fixed on square toes (67) by magnet.
2. the Teaching Instruction of Engineering Graphics device that face method principle is changed in a kind of ocular demonstration according to claim 1, which is characterized in that
The cylindrical body guide rail (22) is telescopic rod, including extension bar and fixed link, sets one at elongation to maximum extension bar
Aperture sets a raised spring leaf (221) at corresponding fixed link, when extension bar elongation to the limit when, the protrusion of fixed link
Spring leaf (221) slides into the aperture of extension bar, completes the fixation of extension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820657960.9U CN208796468U (en) | 2018-05-04 | 2018-05-04 | It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820657960.9U CN208796468U (en) | 2018-05-04 | 2018-05-04 | It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle |
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| Publication Number | Publication Date |
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| CN208796468U true CN208796468U (en) | 2019-04-26 |
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| CN201820657960.9U Expired - Fee Related CN208796468U (en) | 2018-05-04 | 2018-05-04 | It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492638A (en) * | 2018-05-04 | 2018-09-04 | 江南大学 | It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle |
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2018
- 2018-05-04 CN CN201820657960.9U patent/CN208796468U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492638A (en) * | 2018-05-04 | 2018-09-04 | 江南大学 | It is a kind of to visually demonstrate the Teaching Instruction of Engineering Graphics device for changing face method principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190426 Termination date: 20210504 |
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| CF01 | Termination of patent right due to non-payment of annual fee |