Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 1

Quelle: http://www.sk.mb.uni-siegen.de/interaktiveuebung.htmAufgabe13: Welche Ansicht ist die richtige? (Which of the views is the right one?)

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 2

Quelle: http://www.sk.mb.uni-siegen.de/interaktiveuebung.htmAufgabe14: Welche Ansicht ist die richtige? (Which of the views is the right one?)

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 3

Aufgabe 15:

Zeichnen den Halbschnitt des aufgeschnitten dargestellten Drehteils! (Draw the half-sectionview of the displayed revolution)

Lösung:

40

40

40

30

60

30

Ø120Ø80

Ø40

Ø20Ø60

Ø100

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 4

Aufgabe 16:

Welche der dargestellten Schnittansichten ist korrekt? (Which of the displayed section views is correct?)

Links auf unserer Web-Seite

(http://www.uni-due.de/cae/konstruktionslehre_I.shtml)

Seminar Technisches Zeichnen

Weitere Aufgaben und Lösungen:

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 5

Aufgabe 17:

Zeichnen Sie einen geeigneten Stufenschnitt für das Bauteil, so dass alle Innenformen (Durchgangsbohrungen) in der Seitenansicht sichtbar werden! Ein der beiden Bohrungen hat auf einer Seite eine 45°-Fase.

(Draw a useful staircut for the diplayed part in a way that all inner forms (through holes) areproperly displayed in the sideview. One of the two through holes has a 45°-chamfer!

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 6

Lösung zu Aufgabe 17:

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 7

Aufgabe 18:

Skizzieren Sie die erforderlichen Ansichten des dargestellten Bauteiles!

(Sketch the necessary views of thedisplayed part)

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 8

Lösung zu Aufgabe 18:

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 9

Product Documentation:

Source:Hoischensurface informationlabeling field

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 10

The bill of material can be either arranged on the assemblydrawing or on a separate piece of paper

The labeling field is used to draw up text and is arranged in the lower cornerof the drawing. After folding the drawing to DIN A4 format it is supposed to beon top and the text has to be readable in correct direction

Labeling field and bill of material

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 11

Example:

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 12

Pos. Menge Einheit Benennung Sachnummer/Norm-Kurzzeichen Bemerkung 1 1 Stck. Stehlagergehäuse 4001-01 2 1 Stck. Welle 4001-02 3 1 Stck. Deckel 4001-03 4 1 Stck. Flanschdeckel 4001-04 5 1 Stck. Stirnrad 4001-05 6 1 Stck. Kettenrad 4001-06 7 1 Stck. Scheibe D46/D14, 3 dick 8 2 Stck. Rillenkugellager DIN 625-6206-2Z 9 1 Stck. Sicherungsring DIN 471-30x1,5

10 1 Stck. Sicherungsring DIN 472-62x2 11 25 mm Zwischenhülse Rohr DIN 2391-35x2,5 – St45 12 1 Stck. Wellendichtring DIN 3760 – AS35x47x7 - NB 13 1 Stck. Passfeder DIN 6885-A8x7x63 – St60-2k 14 1 Stck. Federring DIN 128 A10-FSt 15 1 Stck. Federring DIN 128 A12-FSt 16 2 Stck. Sechskantschraube ISO 4017 M10x25 –8.8 17 1 Stck. Sechskantschraube ISO 4017 M12x20 –8.8 Datum Name Benennung

Bearb. 3.10.03 Templin

Gepr 10.10.03 Köhler

Norm Zwischentrieb

Blatt

1

Universität Duisburg-Essen

IPE

4001-00 Bl.

Zust. Änderung Datum Name Urspr. Ers. f.: Ers.d.:

Example: bill of material

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 13

Comparison of surface symbols and adaptation:

Datum of surface informationin drawings DIN ISO 1302

machining1 2 3 4 1 2 3 4

25,0 12,5 6,3 3,2 160,0 100,0 63,0 25,0 rough6,3 3,2 1,6 0,8 40,0 25,0 16,0 10,0 finishing1,6 0,8 0,4 0,2 16,0 6,3 4,0 2,5 smooth-finishing

0,1 0,1 0,0 1,0 1,0 0,4 micro-finishing

Average roughness for row

Roughness depth Rz for row

- Ausführung des Symboles

- Eintragung der Angaben am Symbol

60° 60° h

h

e d

bc(f)a

a1

2

1

2

l

h = Nennhöhe der Schrift1

2h = 1,4 h bis 3h1 1

a Ra in µm, µin oder Rauheitsklasseb Fertigungsverfahrenc Bezugstrecked Rillenrichtunge Bearbeitungszugabef (Rz)

l h>= 2

Entry of a datum to a symbol

Design of symbols

Ra in μm, μin or roughness classManufacturing method Reference length Groove direction Machining allowance (Rz)

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 14

Example:

ø30

ø40

ø28

ø20

2540

6070

Rz25( )

Rz6,3 Rz6,3

25

Rz6,3

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 15

Symbol Meaning Remark Example Commentunmachined surface in unprocessed condition

or fettled

cutted or non-cutted machined surface with an average roughness of Ra <= 6,3

cutted or non-cutted machined surface with an medium surface roughness of Ra =4 to 16

surface symbol that is explained in another location in the drawing, e.g.

cutted machined surface with average rougness of Ra=0,4 to 0,8

cutted machined surface with percentage contact area Tmin=40%

surface machined by flame cutting, quality I, accuracy level A according to DIN 2310 part 3

without additional remarks: surface remains unmachined

e.g. unfinished casting, semifinshed parts, forged surfaces

semifinished part (e.g. drawn steel) with only one machined surface, all other surfaces

remain unmachined

with additional remarks: surface has to be machined with a cutting process

e.g. by forming, forming has to be done without cutting processes

non cutted machined surface with medium surface roughness of Ra <=3

basic symbolsymbol without additional declarations

not allowed

the surface ha to be machined in a cutting process

cutting machiningor

flat

6,3

(Rz= 16)

(Rz= 4)

oder

Rz

16R

z4

z

y

0,40,8

tf

> 40

IA DIN 2310

( )3,2

orR

z= 3 μm

Rz3

or

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 16

Product Documentation: threads

Source:Hoischen

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 17

Flank angle

Nominal Diameter

pitch

Core Diameter

Spiral - Path of a point that moves with constant velocity along a straight line g and rotates around an axis m with constant angular velocity. The distance covered in one turn of the spiral corresponds to the pitch P of the thread.

(source: www.principia-natura.de)

Perimeter = π * d2

Threadpitch P

Leadangle α

Threads

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 18

Representation of different kinds of threads

Feedthrough withthread

Stud bolt srewed in

Threaded boltscrewed in Threaded

blind holeHidden thread

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 19

Kinds of threads

Profilform AnwendungBezeichnungBenennung

MM20; M20x1

Metrisches ISO-GewindeRegelgewinde (DIN 13 T1)Feingewinde (DIN 13 T12)

Zylindrisches Rohrgewinde

Metrisches ISO-Trapezgewinde(DIN 103)

Metrisches ISO-Sägengewinde(DIN 513)

Befestigungsgewinde;hierfür wegengroßer Reibung am geeignetsten.

Außengewinde für Rohre.GG 1 1/4

RpRp 1/8 Innengewinde für Gewinderohre.

TrTr 40x7

Bewegungsgewindefür einseitig wirkend Kräfte,z. B. Hub- undDruckspindeln von Pressen.

SS 48x8

RdRd 40x1/6

Befestigungsgewindefür z. B. Fahrzeugkupplungen,Elektrogewinde.

Bewegungsgewindefür Spindeln usw.Für unbestimmte Kraftrichtung.

Zylindrisches Rundgewinde(DIN 405, 20400)

Description Profile Shape Label Application

Metric ISO-thread

Standard metric thread (DIN 13 T1)

Fine thread (DIN 13 T12)

Fastening thread;

Very useful for this purpose becauseof high friction

Cylindrical pipe threadMale thread for pipes

Female thread for thread pipes

Metric ISO-trapezoid thread

(DIN 103)

Motion thread for spindles etc.

For non-defined force direction

Metric ISO-buttress thread

(DIN 513)

Motion thread for one-drectionalforces,

e.g. for stroke- and pressure spindlesof presses

Cylindrical knuckle thread

(DIN 405, 20400)Fastening thread e.g. for vehicleclutches, electric threads

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 20

Standard parts are usually dimensionless in drawings, but they are listed in the bill of material with their exact standard denotation.

Standardized products are listed with their denotation, the standard number and thefeature block. The feature block can exist of characteristics for shape and type, number, characteristical values (e.g. dimensions), material information and performance information (e.g. surface treatment).

Examples:

Hexagon head screws (DIN EN 24014) with thread M8, length L = 50 mm,

strength category 8.8, and product category A:

Hexagon head screw ISO 4014 – M8 x 50 – 8.8 – A

Round bar steel according to DIN 1013 with ∅ 20 mm made of C35 E:

Round DIN 1013 – 20 – C 35 E(Source: Hoischen, Technisches Zeichnen)

Standard Parts

Introduction to CAxProf. Dr.-Ing. Dipl.-Math. P. Köhler V3 - Folie 21

The labelling is e.g.:

hexagon head screw DIN EN 24014 M8x25-8.8

This means:

nominal diameter: d = 8mm

Length (without head): l = 25mm

strength category: 8.8 (tensile strength Rm = 800 N/mm2, yield strength Re = 0.8*Rm)

For screws according to DIN 24017 b = l.

For screws with fine threads the standards DIN EN 28676 and DIN EN 28765 exist, as well.

The new standards DIN EN... differ to the old standard DIN 931 mainly in the wrench sizes.

In the practical experience you will find many screws according to the older standard DIN 931:

DIN 931 DIN EN 24014

M10 17 16

M12 19 18 e e

s k

b

l1 1

1

Example: Hexagon head screw