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rough blanks

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Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
...-forming operations, namely, rectangular blank, rough blank, partially developed blank, and fully developed blank. It concludes with a discussion on the process capabilities, applications, and limitations of fine-edge blanking and piercing. blanking cam piercing conventional piercing...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006526
EISBN: 978-1-62708-207-5
..., such as toothpaste tubes, are formed in this manner. Multiple-station tooling , which involves a series of separate dies arranged so the rough blank is made into a preform, which proceeds through successive operations until the required form is produced. Transfer presses , which are similar in concept...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... classifications: Rectangular blanks Rough blanks Partially developed blanks Fully developed blanks These types of blanks are described in more detail in the section “Blanking Operations” in the preceding article “Blanking and Piercing” in this Volume. This classification of blanks has...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... strength stock thickness transfer dies PIERCING is the cutting of holes in sheet metal, generally by removing a slug of metal, with a punch and die. Piercing is similar to blanking, except that in piercing the work metal that surrounds the piercing punch is the workpiece and the punched-out slug...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005121
EISBN: 978-1-62708-186-3
... to form parts by a process in which a flat blank is constrained by a blankholder while the central portion of the sheet is pushed into a die opening with a punch to draw the metal into the desired shape without causing wrinkles or splits in the drawn part. This generally requires the use of presses having...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005161
EISBN: 978-1-62708-186-3
... parts conforming to design, special blanks are usually developed. These blanks provide relief for the metal in areas of exceptional strain. In some cases, the flanges are formed in rough blanks and then trimmed. This is usually done when the stresses involved would result in cracking or severe...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005118
EISBN: 978-1-62708-186-3
... of trimming dies such as conventional trimming dies and cam trimming dies. It provides information on rough and finish trimming and construction details of trimming dies. The article reviews the selection criteria of presses for a trimming operation. It provides a discussion on the scrap and material handling...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006425
EISBN: 978-1-62708-192-4
... 2 ). Both tool and sheet have surface roughness, and if they are pressed against each other, adhesion can occur. If lubricant is applied at the tool-sheet interface, lubricant is able to separate (lift) both surfaces, avoiding adhesion. The separation distance of both surfaces depends...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002127
EISBN: 978-1-62708-188-7
... blanks in many different formats. Figure 8 illustrates some of the possibilities. One of the most commonly used formats for cutting tool applications consists of a layer of PCD or PCBN, between 0.3 to 1.5 mm (0.012 to 0.060 in.) thick, bonded to a cemented tungsten carbide substrate. This format of PCD...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005154
EISBN: 978-1-62708-186-3
.... Inasmuch as all portions of a blank are not formed equally, some regions staying completely unformed, the surface roughness is not constant over the product surface. Planar surfaces are always undeformed; thus, the surface roughness in such regions remains the same as the surface roughness of the original...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005110
EISBN: 978-1-62708-186-3
... be achieved in fine-blanked parts are listed in Table 5(a) and ( Table 5(b) ). Cutting-edge quality consists of surface roughness, surface integrity, and allowable tearing level. The achievable surface roughness of a fine-blanked part is R a 3.6 to ∼0.2 μm; generally, surface roughness is R a 2.5...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002145
EISBN: 978-1-62708-188-7
.... Shear cutting operation proceeds from roughing (a) to intermediate (b) to finishing (c) operations The shear cutting head is mounted in a fixed position, and the gear blanks are pushed through the head. Cutting tools are fed radially into the head, a predetermined amount for each stroke, until...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009074
EISBN: 978-1-62708-177-1
... with the application of pressure. The mounted specimen can then be ground and polished as described in the article, “Rough Grinding and Polishing,” in this Volume. Preparation of other metallic honeycomb-cored composites will benefit from this technique as well as thin-walled ribbed composite structures. Fig. 1...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
.... Two processes involved: chemical milling, chemical blanking Fine abrasive particles carried in a high velocity gas stream are used to machine and grind materials Equipment Chemical milling: Large or small, thick parts; masking facilities, corrosion resistant processing tanks and fixtures, vented...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
... (e.g., lubrication, blank surface, die roughness, etc.). Fig. 1 Single-action press with draw cushions in the press table. (a) Pneumatic draw cushion. (b) Hydraulic draw cushion. Source: Ref 1 The hydraulic four-point cushion ( Fig. 1b ) system is mainly a passive system...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003978
EISBN: 978-1-62708-185-6
... one or both sides of the major diameter in shaftlike extensions. Simple pancake forgings, made by upsetting a length of stock. Finished parts made from these forgings include gears, wheels, and milling cutter and tubesheet blanks. Forged and pierced blanks, for subsequent conversion to rolled...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004004
EISBN: 978-1-62708-185-6
...Abstract Abstract Cold heading is typically a high-speed process where a blank is progressively moved through a multi-station machine. This article discusses various cold heading process parameters, such as upset length ratio, upset diameter ratio, upset strain, and process sequence design...