US1546656A - Process of making steel brake drums - Google Patents

Process of making steel brake drums Download PDF

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Publication number
US1546656A
US1546656A US704766A US70476624A US1546656A US 1546656 A US1546656 A US 1546656A US 704766 A US704766 A US 704766A US 70476624 A US70476624 A US 70476624A US 1546656 A US1546656 A US 1546656A
Authority
US
United States
Prior art keywords
drums
ribs
brake
webs
drum
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.)
Expired - Lifetime
Application number
US704766A
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English (en)
Inventor
Frederick D Hansen
Herbert W Tinker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Pressed Steel Co
Original Assignee
Federal Pressed Steel Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Federal Pressed Steel Co filed Critical Federal Pressed Steel Co
Priority to US704766A priority Critical patent/US1546656A/en
Priority to FR596431D priority patent/FR596431A/fr
Application granted granted Critical
Publication of US1546656A publication Critical patent/US1546656A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/10—Drums for externally- or internally-engaging brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/34—Making other particular articles wheels or the like brake drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1332—Structure external ribs, e.g. for cooling or reinforcement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49481—Wheel making

Definitions

  • the degree of eecentricity depends upon certain characteristics of or conditions in the steel, but,-as is well known by expertswersed in steel making, ⁇ though not frilly understood by them, these characteristics or conditions can not be accurately controlled or uniformly regu' lated or obviated. It has, therefore, been necessary in the past to test or measure the eccentricity of the flange and unevenness of the bearing zone of the web of each and every drum by precision instruments to determine if they are within the prescribed limits and then correct, if possible, the defects in these respects if the limits are exceeded. The testing and thorough inspection of the drums, the correcting of defects and scrapping of drums which are badly defective materially increase the cost of the drums.
  • the principal object of our invention is to rovide anovel process of making brake drums with substantially truly concentric brake flanges and substantially truly sym- -mertical webs and .to this .end we press ridges or ribs, preferably radiating'ones, in thewebs of the drums.
  • drums are strengthened, and care- .ful tests and inspection are not necessary
  • Fig. 1 is a ver tical section through the die member and punch of a. drum-forming compression die, showing a steel disc, from which the drum is formed, between the members;
  • Fi' 2 illustrates the brake drum after it as been cupped or formed in and removed from the compression die;
  • Fig. 3 is ayertical section through the die member and punch of the die or tool bumping the webs ofthe drums and forming the ribs therein, the view being taken on the line 33 of Fig. 4;
  • Fig. 4 is a top plan view taken on the line 4-4 of Fig. 3 wlth the brake drum omitted;
  • Fig. 1 is a ver tical section through the die member and punch of a. drum-forming compression die, showing a steel disc, from which the drum is formed, between the members;
  • Fi' 2 illustrates the brake drum after it as been cupped or formed in and removed from the compression die;
  • Fig. 3 is ayertical section through the die member and punch
  • Fig. 5 is a sectional view taken; through a drum formed by our process, the section being takenv as on the line 5-5 of Fig. 6;
  • Fig. 6 is an inside elevation of a brake drum formed by our process;
  • Fig. 7 is a view similar to Fig. 6 but shows a modified form of brake drum made by our process.
  • a steel disc 10 is pressed or formed in a suitable forming compression die, such as is conventionally illustrated in part in Fig. l in which 11 is the die member and 12 is the punch.
  • the punch 12 is forced downwardly udder great pressure givin the disc its brake-.drum formation, as in icated by dotted lines 10 in this view.
  • 11' indicates the stripper plates for stripping the drums from the punch.
  • Fig. 2 we have shown in sections a brake drum after it has been formed by the forming compression die, but we have somewhat exaggerated the convexity of the web 13 of the drum in order to illustrate more clearly its general contour.
  • We next punch the hub opening 6 and the bolt holes 7 in the web such as shown in Figs. 5, 6 and 7.
  • the die member 13 comprises a cylindrical base 13 mounted on any suitable platform 15. Mounted on top of the base 13" is a disc 16 which is fastened to the base 13 by means of screws 17'projecting through the base 13" and screwed at their upper ends into the threaded openings in the disc 16. r The disc 16 is provided with radiating grooves 18 in which are seated and secured by screws 19 hardened pieces of steel 20 provided with grooves 21 in their top faces.
  • the upper die member or plunger 14 is secured to a power slide 23 by a screw 24. Secured to the lower face of the cylindrical.
  • the base 14 of the punch 14 is a disc 25 secured to the base 14' by screws 26.
  • the lower face of the plate'25 is provided with grooves 27 in which are seated hardened pieces of steel 28 provided with ribs 29 on their bottom faces in alignment with the grooves 21.
  • the mechanism for operating the punch 14 is so designed that the punch imparts a quick and powerful blow to the web of the brake drum and at the same time the ribs 29 force the metal under them into the grooves 21,
  • the bottom face of the disc 25 is slightly convex and the upper faceof the disc 16 is correspondingly concaved in order to impart a concave contour to the web of the brake drum.
  • the ribs 29 are of tapering depth, being deepest at their inner ends so that the ribs 30 formed in the web of the brake drum are of tapering depth, being deepest at their in ner ends.
  • ribs 30 we have shown in Figs. 5, 6 and 7, illustrative forms of drums made by practicing our process.
  • the ribs either due to the equal distribution of the strains and stresses or for some other reason, increase the strength of the flanges so that they more readily resist distortion or bending, and this is highly important as they are subjected to considerable force when the braking eflort is applied to them, and also to rough handling and use in transportation and by workmen in the factories where the drums are assembled on the automobiles. It will also be obvious that the ribs strengthen the webs of the drums radially and axially and that the ribs increase the width of the bearing surface or edge of the hub opening 6 on the barrel of the wheel hub, as the ends of the ribs form projections 31 as viewed in Fig. 5.
  • the web of the brake drum is drawn up tightly against the flange of the hub by means of bolts extending through the openings 7 between the ribs, and as the segments between the ribs are comparatively narrow adjacent the holes, and separated by the grooves formed "by the rib the web of the drum is drawn more easi y and equally against the wheel and the ribs prevent the web from springing out past its center plane, (after the fashion of the bottom of a tin dish pan) as is the case in some instances with unribbed brake drums.
  • ribs m extend other than radially or be pressed -outwardly or may be of uniform depth. from one end to the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
US704766A 1924-04-07 1924-04-07 Process of making steel brake drums Expired - Lifetime US1546656A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US704766A US1546656A (en) 1924-04-07 1924-04-07 Process of making steel brake drums
FR596431D FR596431A (fr) 1924-04-07 1925-04-06 Tambour de frein et procédé pour sa fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US704766A US1546656A (en) 1924-04-07 1924-04-07 Process of making steel brake drums

Publications (1)

Publication Number Publication Date
US1546656A true US1546656A (en) 1925-07-21

Family

ID=24830779

Family Applications (1)

Application Number Title Priority Date Filing Date
US704766A Expired - Lifetime US1546656A (en) 1924-04-07 1924-04-07 Process of making steel brake drums

Country Status (2)

Country Link
US (1) US1546656A (fr)
FR (1) FR596431A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133091A (en) * 1976-04-12 1979-01-09 Honda Giken Kogyo Kabushiki Kaisha Apparatus for fixing blades on turbine wheel for fluid coupling made of sheet metal
EP0521640A1 (fr) * 1991-06-27 1993-01-07 Dana Corporation Procédé de fabrication d'un disque d'accouplement électromagnétique
US5924321A (en) * 1997-04-29 1999-07-20 Mercury Products Corp. Core plug formation die apparatus and method of manufacturing a core plug
US6223579B1 (en) 1997-04-29 2001-05-01 Mercury Products Corporation Core plug formation die apparatus and method of manufacturing a core plug
US20140251740A1 (en) * 2011-10-10 2014-09-11 PETROCERAMICS, S.p.A. Method for manufacturing a brake disc, support bell for a brake disc and brake disc

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133091A (en) * 1976-04-12 1979-01-09 Honda Giken Kogyo Kabushiki Kaisha Apparatus for fixing blades on turbine wheel for fluid coupling made of sheet metal
EP0521640A1 (fr) * 1991-06-27 1993-01-07 Dana Corporation Procédé de fabrication d'un disque d'accouplement électromagnétique
US5924321A (en) * 1997-04-29 1999-07-20 Mercury Products Corp. Core plug formation die apparatus and method of manufacturing a core plug
WO2000043144A1 (fr) * 1997-04-29 2000-07-27 Mercury Products Corp. Procede de realisation d'un bouchon a noyaux
US6223579B1 (en) 1997-04-29 2001-05-01 Mercury Products Corporation Core plug formation die apparatus and method of manufacturing a core plug
AU772674B2 (en) * 1997-04-29 2004-05-06 Mercury Products Corp. Core plug formation
US20140251740A1 (en) * 2011-10-10 2014-09-11 PETROCERAMICS, S.p.A. Method for manufacturing a brake disc, support bell for a brake disc and brake disc
US10458495B2 (en) * 2011-10-10 2019-10-29 Freni Brembo S.P.A. O Anche Piu' Brevemente Brembo S.P.A. Method for manufacturing a brake disc, support bell for a brake disc and brake disc

Also Published As

Publication number Publication date
FR596431A (fr) 1925-10-23

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