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inside draft

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Published: 01 January 2005
Fig. 18 Definition of inside and outside draft and limitations on the depth of the cavities between the ribs. Typically, inside-draft angles exceed outside-draft angles. More
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004034
EISBN: 978-1-62708-185-6
...Abstract Abstract This article schematically illustrates the basic types of drafts used in forging design, including outside draft, inside draft, blend draft, natural draft, shift draft, and back draft. The amount of draft, or the draft angle, is designated in degrees and is measured from...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... on the amount of metal needed for draft is illustrated by Fig. 9 . Fig. 9 Effect of part size on the amount of metal needed for draft in a forging Inside draft is draft on surfaces that tightens on the die as the forging shrinks during cooling; examples are cavities such as narrow grooves...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001021
EISBN: 978-1-62708-161-0
... that requires the least machining to satisfy finished-part requirements has the best properties. Thus, a finished part machined from a blocker-type forging usually exhibits mechanical properties and corrosion characteristics inferior to those of a part made from a close-tolerance, no-draft forging...
Image
Published: 01 January 2005
required extensive machining on inside and outside surfaces of tabs to remove draft and provide desired finish dimensions. (e) Included in length and width tolerance. (f) Chamfer permissible More
Image
Published: 01 January 2005
Material 4350 steel (a) (b) Forging operations Pancake; pierce and punch; preblock; block; finish forge; trim Supplemental operations Anneal; rough machine inside; harden and temper (c) Heat treatment Harden and temper (b) (d) Mechanical properties (e) Inspection Magnetic More
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
..., a finished part machined from a blocker-type forging usually exhibits mechanical properties and corrosion characteristics inferior to those of a part made from a close-tolerance, no-draft forging. It should be anticipated that decreasing the amount of stock that must be removed from the forging...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004038
EISBN: 978-1-62708-185-6
... examples of actual forgings. Defining Ribs and Bosses Rib A rib is a wall-like or brace-like projection that is located either at the periphery or on the inside of a forging; it is forged in either the upper or lower die, or both. It may be continuous or discontinuous, or part of a network...
Image
Published: 01 January 2005
of web Draft angle Outside, 2° (+6, −0°); inside, 2 1 2 ° max Minimum rib width 6.4 mm (0.25 in.) Maximum rib height-to-width ratio 5.7:1 Minimum and typical fillet radius 4.8 mm (0.19 in.) (e) Minimum and typical corner radius 3.3 mm (0.13 in.) Web thickness 3.3 mm More
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004036
EISBN: 978-1-62708-185-6
... outside it. In Fig. 1(a) , the flash is divided equally on either side of the parting line and is equally distributed between the upper and lower dies. This distribution of flash is common when the draft angle assigned to the forging is the same on both sides of the parting line, as in Fig. 1...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009018
EISBN: 978-1-62708-187-0
... alternative design solutions to molding and coring problems and describes the molding sequence. Draft refers to the amount of taper given to the sides of a pattern to enable it to be withdrawn easily from the mold. The article concludes with a simple example demonstrating the influence of a casting...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004033
EISBN: 978-1-62708-185-6
... of horizontal corners and fillets. (a) Rib heights. (b) Full-rounded ribs. (c) Machining and web qualifications. (d) Intersections The plan view of a rib shows its width and draft, but not the corners and fillets ( Fig. 3b ). The width of a full-rounded rib (section A-A of Fig. 3b ) is described...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003997
EISBN: 978-1-62708-185-6
...) Thin section, short (up to 150 mm incl.) 0.25 (0.010) 0.3 (0.012) 0.3 (0.012) 0.36 (0.014) Thin section, long (over 150 mm incl.) 0.4 (0.015) 0.4 (0.015) 0.4 (0.015) 0.5 (0.020) Thin section, round 0.25 (0.010) 0.3 (0.012) 0.3 (0.012) 0.36 (0.014) Draft angles (outside and inside 1...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
... is displaced progressively by the forging punch, and the flow of metal is concentric, or parallel, to the outline of the punch. A punch is that portion of the forging die, comprising a single component or insert, that actually forges a cavity or hole. An exception to this definition exists in no-draft forging...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009019
EISBN: 978-1-62708-187-0
... for making the wax or plastic pattern for tubular investment custing shown at left. Note draft to permit withdrawal of the core from the pattern. The wax pattern for investment molding shown in Fig. 19 incorporates an inside radius at the junction of the two cores. Metal cores A and B are required...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002441
EISBN: 978-1-62708-194-8
... system. The article provides information on the applications of CAD systems, including integrated product development, drafting and product documentation, product visualization, mechanical analysis, and numerical control programming. algebraic constraints attribute constraints computer-aided...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004039
EISBN: 978-1-62708-185-6
... of their physical connection to other elements of a forging, the design of webs must be considered along with the design of ribs and bosses, the location of the parting line, the assignment of draft, and the selection of corner and fillet radii. Unconfined and Confined Webs Because webs are connectives...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006493
EISBN: 978-1-62708-207-5
... Tolerance Draft outside 0° + 30′, −0 Draft inside 1° + 30′, −0 Corner radii 1.5 ± 0.75 mm (0.060 ± 0.030 in.) Fillet radii 3.3 ± 0.75 mm (0.130 ± 0.030 in.) Contour ±0.38 mm (±0.015 in.) Straightness 0.4 mm in 254 mm (0.016 in. in 10 in.) Minimum web thickness (a) 2.3 mm...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004037
EISBN: 978-1-62708-185-6
.... The alternate classes of parting lines are called either "straight" or "broken" for brevity. Regardless of whether draft is applied or natural, the forging will have its maximum spread or girth at the parting line. Proper placement of the parting line ensures that the principal grain flow direction within...
Book Chapter

By Allan B. Dove
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001017
EISBN: 978-1-62708-161-0
... (a) Approximate inside coil diameter (b) Common block size (a) Approximate inside coil diameter (b) Common block size (a) Approximate inside coil diameter (b) Common block size (a) Approximate inside coil diameter (b) mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm...