CN108182865A - Special jig position error apparatus for demonstrating and its demenstration method - Google Patents
Special jig position error apparatus for demonstrating and its demenstration method Download PDFInfo
- Publication number
- CN108182865A CN108182865A CN201810182127.8A CN201810182127A CN108182865A CN 108182865 A CN108182865 A CN 108182865A CN 201810182127 A CN201810182127 A CN 201810182127A CN 108182865 A CN108182865 A CN 108182865A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- groove
- vernier
- position error
- scale
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000205 computational method Methods 0.000 abstract description 2
- 238000003801 milling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of special jig position error apparatus for demonstrating and its demenstration method, belong to teaching demonstration equipment technical field.The demenstration method includes the following steps：First cylinder is put into V-groove；The vernier scale of the mobile vernier height gauge, makes measuring jaw gradually be moved up in the lower section of the part for protruding from V-groove of the first cylinder, until upper surface and the first Down Highway of the first cylinder are inconsistent, records the scale H1 on vernier scale at this time；Second cylinder is put into V-groove；The vernier scale of the mobile vernier height gauge, makes the upper surface of measuring jaw and the second Down Highway of the second cylinder inconsistent, records the scale H2 on vernier scale at this time；It calculates with special jig position error Δ d during excircle orientation, Δ d=H1 H2.Advantage：Facilitate the principle concept of students' response position error and go deep into grasping knowledge point, grasp with the computational methods of special jig position error during excircle orientation.
Description
Technical field
The invention belongs to teaching demonstration equipment technical fields, and in particular to a kind of special jig position error demonstration dress
It puts and its demenstration method.
Background technology
When processing a collection of workpiece with quiet adjusting method, positioning datum can be encountered in the position fixing process of workpiece with process tolerances not
It overlaps and workpiece positioning datum (basal plane) is with positioning workpiece working surface there are the problems such as foozle, these problems all can
Process tolerances is caused to deviate ideal position and generate mismachining tolerance.The mismachining tolerance forms position error, and position error is work
The maximum displacement that the process tolerances of part occur along process dimension direction, size are whether judging fixture locating scheme rationally
Important evidence.
Position error is relatively abstract in actual production, and when especially being positioned with cylindrical surface, positioning datum axis can not be seen
It examines, student is difficult the deep Computing Principle for understanding position error.At present, existing position error measures untrue visible
Analysis of Positioning Error model carries out simulated measurement only by PPT and CAI subsidiary water reducing ratios, and it is fixed that student is difficult to intuitively recognize
Position everything real storage of error the phenomenon that.
As shown in Figure 1, it is illustrated by taking groove milling in the outer circle in cylindrical work as an example.Excircle of cylindrical workpiece diameter D
ForGuarantee groove width size b and slot bottom size h is needed in groove milling on cylindrical work using milling machine1, wherein, groove width
Size b is directly ensured by milling cutter size, unrelated with positioning, therefore its position error is equal to zero.By cylindrical work during groove milling
Down Highway B ensure slot bottom size h as process tolerances1.Positioning datum is the axes O of cylindrical work, and positioning basal plane is
The periphery of cylindrical work.Due to cylindrical work positioning basal plane, that is, cylindrical work periphery there are foozle,
Positioning datum is made to deviate ideal position, so as to generate datum drift error Δ j, y.Due to the axis of positioning datum, that is, cylindrical work
Line O and the Down Highway B of process tolerances, that is, cylindrical work are misaligned, therefore can cause Datum transfer Δ j, b.Positioning misses
Poor Δ d is the algebraical sum of datum drift error the Δ j, y and Datum transfer Δ j, b, i.e.,
Δ d=Δs j, y+ Δ j, b
Fig. 2 illustrates a large cylindrical workpiece and a roundlet cylindrical workpiece, wherein, the outside diameter D1 of large cylindrical workpiece
For dg, for representing the maximum value of qualified excircle of cylindrical workpiece diameter, the outside diameter D2 of roundlet cylindrical workpiece is dg-
Tdg, for representing the minimum value of qualified excircle of cylindrical workpiece diameter, TdgThe as public affairs of the outside diameter of cylindrical work
Difference.The center of circle of large cylindrical workpiece is set as O1, the center of circle of roundlet cylindrical workpiece is set as O2, by the periphery of large and small cylindrical work
As positioning basal plane, it is placed on V-block and positions.B in figure1For the Down Highway of large cylindrical workpiece, B2For roundlet cylindrical workpiece
Down Highway.The maximum displacement that position error Δ d occurs for the process tolerances B of cylindrical work along process dimension h1 directions at this time
The distance between the Down Highway B1 of i.e. large cylindrical workpiece, Down Highway B2 of roundlet cylindrical workpieceI.e.：
In view of above-mentioned prior art, more preferably geographical for instruction of papil if a kind of position error apparatus for demonstrating can be developed
Decorrelation concept will have good teaching significance, for this purpose, the applicant has made beneficial design, skill described below
Art scheme generates in this background.
Invention content
The present invention top priority be to provide a kind of special jig position error apparatus for demonstrating, student can be facilitated more
Add the Crack cause and correlation computations of position error when intuitively understanding cylindrical work with excircle orientation.
Another task of the present invention is to provide a kind of demenstration method of special jig position error apparatus for demonstrating, be somebody's turn to do
Method operating procedure is simple and can ensure the complete of the technique effect of the special jig position error apparatus for demonstrating
It embodies in face.
The top priority of the present invention is such to what is reached, a kind of special jig position error apparatus for demonstrating, special
Sign is：Including bottom plate, positioning table, vernier height gauge and workpiece is measured, the positioning table is fixed on bottom
On plate, positioning table in upper surface and open up along its length be used to support measure workpiece V-groove, the height vernier
Slide calliper rule include pedestal, main scale, fine motion frame, vernier scale and measuring jaw, and vernier height gauge is fixedly mounted by pedestal and bottom plate, institute
The measurement workpiece stated includes the first cylinder and the second cylinder, wherein, the diameter of the first cylinder is used to represent qualified circle
The maximum value of cylindrical workpiece outside diameter, the excircle of cylindrical workpiece that the diameter of second cylinder is used to represent qualification are straight
The minimum value of diameter, first cylinder and the second cylinder are laterally placed on successively in the V-shaped groove, and the two
One end end of length direction protrude from the end face of V-shaped groove, the upper surface of the measuring jaw is configured to horizontal plane, successively with
First Down Highway of the first cylinder and the second Down Highway of the second cylinder are inconsistent, for measuring the first Down Highway and
Difference in height between two Down Highways.
In the specific embodiment of the present invention, the angle a of the V-groove is 90 °, 120 ° or 150 °.
What another task of the present invention was performed by, a kind of demonstration of special jig position error apparatus for demonstrating
Method, which is characterized in that include the following steps：
S1) the first cylinder is put into V-groove, the periphery of the first cylinder is in contact with the both sides inclined-plane of V-groove；
S2) the vernier scale of the mobile vernier height gauge, makes measuring jaw in the portion for protruding from V-groove of the first cylinder
The lower section divided gradually moves up, until upper surface and the first Down Highway of the first cylinder are inconsistent, records on vernier scale at this time
Scale H1；
S3 the first cylinder) is removed out of V-groove, and the second cylinder is put into V-groove, the outer circle of the second cylinder
Face is in contact with the both sides inclined-plane of V-groove；
S4) the vernier scale of the mobile vernier height gauge, makes measuring jaw in the portion for protruding from V-groove of the second cylinder
The lower section divided gradually moves up, until upper surface and the second Down Highway of the second cylinder are inconsistent, records on vernier scale at this time
Scale H2；
S5 it) calculates with special jig position error Δ d during excircle orientation, Δ d=H1-H2.
The present invention compared with prior art, has an advantageous effect in that due to the above structure,：Simple in structure, behaviour
Facilitate, can be combined theoretical with experiment, preferably allow students' response position error principle concept and go deep into grasping knowledge point,
It grasps with the computational methods of special jig position error during excircle orientation.
Description of the drawings
Fig. 1 is the outer circle groove milling schematic diagram of cylindrical work.
Fig. 2 is schematic diagram of the large and small cylindrical work using periphery as positioning basal plane.
Fig. 3 is the overall structure diagram of the present invention.
Fig. 4 is the schematic diagram of the first cylinder of the present invention and the second cylinder using periphery as positioning basal plane.
In figure：1. bottom plate；2. positioning table, 21.V type grooves；3. vernier height gauge, 31. pedestals, 32. main scales, 33.
Fine motion frame, 34. vernier scales, 35. measuring jaws；4. measure workpiece, 41. first cylinders, 42. second cylinders.
Specific embodiment
In order to which the public is enable to fully understand the technical spirit and advantageous effect of the present invention, applicant will be below with reference to attached drawing
The specific embodiment of the present invention is described in detail, but applicant appoints the limitation that the description of embodiment is not to technical solution
What conceives to change in the form rather than substance according to the present invention should all be considered as protection scope of the present invention.
Referring to Fig. 3, the present invention relates to a kind of special jig position error apparatus for demonstrating, including bottom plate 1, positioning work
Make platform 2, vernier height gauge 3 and measure workpiece 4.The positioning table 2 is fixed on bottom plate 1, and positioning table 2 exists
Upper surface and opening up along its length is used to support the V-groove 21 for measuring workpiece 4, and the angle a of the V-groove 21 can be
90 °, 120 ° or 150 °.The vernier height gauge 3 is herein using conventional products, including pedestal 31, main scale 32, fine motion frame
33rd, vernier scale 34 and measuring jaw 35 etc..Vernier height gauge 3 is fixedly mounted by pedestal 31 and bottom plate 1.The measurement workpiece
4 include the first cylinder 41 and the second cylinder 42, and the diameter of the first cylinder 41 is more than the diameter of the second cylinder 42,
In, the diameter of the first cylinder 41 is used to represent the maximum value of qualified excircle of cylindrical workpiece diameter, second cylinder
The diameter of body 42 is used to represent the minimum value of qualified excircle of cylindrical workpiece diameter.During demonstration, first cylinder 41
It need to be placed across successively with the second cylinder 42 in the V-shaped groove 21, and one end end of the length direction of the two is equal
Protrude from the end face of V-shaped groove 21, with facilitate measuring jaw 35 can respectively with the first Down Highway B of the first cylinder 411' and second
Second Down Highway B of cylinder 422' inconsistent.The upper surface of the measuring jaw 35 is configured to horizontal plane, being capable of accurate positioning
With the first Down Highway B of the first cylinder 411' and the second cylinder 42 the second Down Highway B2' inconsistent, and first time is female
Line B1' and the second Down Highway B2' between difference in heightAs with special jig position error Δ d during excircle orientation.
Please continue to refer to Fig. 3 and with reference to Fig. 4, a kind of demenstration method of special jig position error apparatus for demonstrating, packet
Include following steps：
S1) the first cylinder 41 is put into V-groove 21, the periphery of the first cylinder 41 and two skew backs of V-groove 21
Face is in contact；
S2) the vernier scale 34 of the mobile vernier height gauge 3, makes measuring jaw 35 protrude from V in the first cylinder 41
The lower section of the part of type groove 21 gradually moves up, until upper surface and the first Down Highway B of the first cylinder 411' inconsistent, record
The scale H1 on vernier scale 34 at this time；
S3 the first cylinder 41) is removed out of V-groove 21, and the second cylinder 42 is put into V-groove 21, the second cylinder
The periphery of body 42 is in contact with the both sides inclined-plane of V-groove 21；
S4) the vernier scale 34 of the mobile vernier height gauge 3, makes measuring jaw 35 protrude from V in the second cylinder 42
The lower section of the part of type groove 21 gradually moves up, until upper surface and the second Down Highway B of the second cylinder 422' inconsistent, record
The scale H2 on vernier scale 34 at this time；
S5 it) calculates with special jig position error Δ d during excircle orientation, Δ d=H1-H2.
Claims (3)
1. a kind of special jig position error apparatus for demonstrating, it is characterised in that：Including bottom plate (1), positioning table (2),
Vernier height gauge (3) and measurement workpiece (4), the positioning table (2) are fixed on bottom plate (1), positioning table
(2) in upper surface and open up along its length be used to support measure workpiece (4) V-groove (21), the vernier height gauge
(3) including pedestal (31), main scale (32), fine motion frame (33), vernier scale (34) and measuring jaw (35), vernier height gauge (3) leads to
It crosses pedestal (31) to be fixedly mounted with bottom plate (1), the measurement workpiece (4) includes the first cylinder (41) and the second cylinder
(42), wherein, the diameter of the first cylinder (41) is used to represent the maximum value of qualified excircle of cylindrical workpiece diameter, described
The diameter of second cylinder (42) is used to represent the minimum value of qualified excircle of cylindrical workpiece diameter, first cylinder
(41) it is laterally placed on successively in the V-shaped groove (21), and the one of the length direction of the two with the second cylinder (42)
End end protrudes from the end face of V-shaped groove (21), and the upper surface of the measuring jaw (35) is configured to horizontal plane, justifies successively with first
First Down Highway (B of cylinder (41)1') and the second cylinder (42) the second Down Highway (B2') inconsistent, for measuring
One Down Highway (B1') and the second Down Highway (B2') between difference in height.
2. special jig position error apparatus for demonstrating according to claim 1, it is characterised in that the V-groove
(21) angle a is 90 °, 120 ° or 150 °.
3. a kind of demenstration method of special jig position error apparatus for demonstrating, it is characterised in that include the following steps：
S1) the first cylinder (41) is put into V-groove (21), the periphery of the first cylinder (41) and the two of V-groove (21)
Skew back face is in contact；
S2) the vernier scale (34) of the mobile vernier height gauge (3), makes measuring jaw (35) in the protrusion of the first cylinder (41)
It is gradually moved up in the lower section of the part of V-groove (21), until upper surface and the first Down Highway (B of the first cylinder (41)1') phase
It contradicts, records the scale H1 on vernier scale (34) at this time；
S3 the first cylinder (41)) is removed out of V-groove (21), and the second cylinder (42) is put into V-groove (21), second
The periphery of cylinder (42) is in contact with the both sides inclined-plane of V-groove (21)；
S4) the vernier scale (34) of the mobile vernier height gauge (3), makes measuring jaw (35) in the protrusion of the second cylinder (42)
It is gradually moved up in the lower section of the part of V-groove (21), until upper surface and the second Down Highway (B of the second cylinder (42)2') phase
It contradicts, records the scale H2 on vernier scale (34) at this time；
S5 it) calculates with special jig position error Δ d during excircle orientation, Δ d=H1-H2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182127.8A CN108182865A (en) | 2018-03-01 | 2018-03-01 | Special jig position error apparatus for demonstrating and its demenstration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182127.8A CN108182865A (en) | 2018-03-01 | 2018-03-01 | Special jig position error apparatus for demonstrating and its demenstration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108182865A true CN108182865A (en) | 2018-06-19 |
Family
ID=62553440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810182127.8A Withdrawn CN108182865A (en) | 2018-03-01 | 2018-03-01 | Special jig position error apparatus for demonstrating and its demenstration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108182865A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387499A (en) * | 2008-10-15 | 2009-03-18 | 天津大学 | Cylinder on-line diameter measurement apparatus and measurement method thereof |
| CN105118375A (en) * | 2015-09-23 | 2015-12-02 | 东北大学 | Visual teaching aid for measuring workpiece positioning errors |
| CN205448923U (en) * | 2016-03-29 | 2016-08-10 | 南京瓯谱光电科技有限公司 | Cylinder prism excircle detects instrument |
| CN106839944A (en) * | 2016-12-28 | 2017-06-13 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft engine drive gear disk V-groove angle on-site measurement method |
| CN107121078A (en) * | 2017-05-12 | 2017-09-01 | 新疆维吾尔自治区计量测试研究院 | A kind of piston special comprehensive measuring system based on temperature, difference in height and rotating speed |
| CN208548098U (en) * | 2018-03-01 | 2019-02-26 | 常熟理工学院 | Special jig position error apparatus for demonstrating |
-
2018
- 2018-03-01 CN CN201810182127.8A patent/CN108182865A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387499A (en) * | 2008-10-15 | 2009-03-18 | 天津大学 | Cylinder on-line diameter measurement apparatus and measurement method thereof |
| CN105118375A (en) * | 2015-09-23 | 2015-12-02 | 东北大学 | Visual teaching aid for measuring workpiece positioning errors |
| CN205448923U (en) * | 2016-03-29 | 2016-08-10 | 南京瓯谱光电科技有限公司 | Cylinder prism excircle detects instrument |
| CN106839944A (en) * | 2016-12-28 | 2017-06-13 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft engine drive gear disk V-groove angle on-site measurement method |
| CN107121078A (en) * | 2017-05-12 | 2017-09-01 | 新疆维吾尔自治区计量测试研究院 | A kind of piston special comprehensive measuring system based on temperature, difference in height and rotating speed |
| CN208548098U (en) * | 2018-03-01 | 2019-02-26 | 常熟理工学院 | Special jig position error apparatus for demonstrating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109186858B (en) | Gravity center measuring device and method | |
| WO2021042631A1 (en) | Three-dimensional movement deformation measurement system and application thereof in three-dimensional similar simulation experiment | |
| CN103026310B (en) | Method for realizing the spatial transformation from machining points to reference points of installation survey | |
| CN105004252A (en) | Detection method for verticality between splicing surface of long and thin workpiece with square cross section and reference surface | |
| CN115979118B (en) | Device and method for measuring verticality error and error azimuth angle of cylindrical part | |
| CN103471572A (en) | Total station networking measurement method of large-scale structural component | |
| CN112828878B (en) | Three-dimensional measurement and tracking method for large-scale equipment in butt joint process | |
| CN103615957A (en) | Measuring tool for measuring size of D-shaped head | |
| CN204854519U (en) | Five -axle linkage lathe RTCP dynamic precision calibration device | |
| CN102128601B (en) | Precision measurement device for key dimensions of computerized numerical control bending die | |
| CN208548098U (en) | Special jig position error apparatus for demonstrating | |
| CN202411823U (en) | Casting initial datum machining device with balanced machining allowance | |
| CN108182865A (en) | Special jig position error apparatus for demonstrating and its demenstration method | |
| CN204115609U (en) | A kind of quantification detection apparatus for detecting hole in piece part | |
| CN114964056B (en) | Self-calibration method for micro-assembly equipment | |
| CN107643032B (en) | Design and use method of reverse detection space positioning device | |
| CN116299740A (en) | Space domain gravity multi-parameter analysis forward modeling method of rotary rectangular prism | |
| CN113102811B (en) | Machining and measuring method for continuous casting fan-shaped section frame space hole | |
| CN205363291U (en) | Omnipotent space angle spot facing work locator | |
| CN101344378B (en) | Internal hole reference positioning auxiliary measuring device | |
| CN203869647U (en) | Measuring tool measuring dimension of D-shaped head | |
| CN210603109U (en) | Two-hole coordinate measuring scale | |
| CN205981022U (en) | Specific high inside width measuring tool of fork truck portal channel -section steel | |
| CN205718746U (en) | A kind of robot motion accuracy detecting device | |
| CN105118375B (en) | Workpiece's Tack Error is measured and visualization teaching aid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180619 |