US3170343A - Apparatus for manufacturing metal parts by deformation - Google Patents
Apparatus for manufacturing metal parts by deformation Download PDFInfo
- Publication number
- US3170343A US3170343A US222133A US22213362A US3170343A US 3170343 A US3170343 A US 3170343A US 222133 A US222133 A US 222133A US 22213362 A US22213362 A US 22213362A US 3170343 A US3170343 A US 3170343A
- Authority
- US
- United States
- Prior art keywords
- trailing
- roll
- segments
- blade
- roll segments
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
- B21H7/16—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons turbine blades; compressor blades; propeller blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/22—Making articles shaped as bodies of revolution characterised by use of rolls having circumferentially varying profile ; Die-rolling
Definitions
- a metallic bar section of suitable length passes this bar through a rolling mill, the rolls of which are constituted by segments of a cylinder and wherein one or both ends of these roll segments are provided with recesses so that only the intermediate, or body section of the blade will be produced by the rolling and reduction of an intermediate portion of the metallic bar section.
- One or both ends of the metallic barsection which are to form the foot, or foot and head respectively of the blade are not rolled because of the end recesses in the roll segments thus leaving substantially unworked masses of the bar at one or both ends respectively.
- the partly completed blade is transferred to a press where the fillets between the body and foot and head end portions of the blade are finished pressed to the desired curvature and dimensions.
- the roll segments of the rolling mill are designed in such manner that there is no longer any appreciable difference in the fillet zones between the body portion of the blade and the head and foot portions thereof. More particularly, at the posterior end of each roll segment, upper and lower, after the trailing recess intended for the head or foot of the blade, wherever may be the case, there is provided a terminal part with a radius larger than the greatest radius of the remainder of the roll segment which serves the function of retaining the metal which tends to stretch as a result of rolling of the body portion of the blade and, at the end of rotation of the roll segment compresses this metal in order to include the same in the trailing recess.
- This trailing terminal part on the upper and lower roll segments serve conjointly both as a stop retaining the metal and as a punch compressing it. Under its action, the metal is obliged to fill the entire trailing recess and thereby to line the internal angles which, without this compression, might not receive any metal at all.
- FIGS; 1-4 is a sequence of views showing the bar section in various positions as it passes through and between the roll segments;
- FIG. 5 is an end view of the roll section illustrating one suitable configuration for the trailing parts of the roll segments which cooperate to establish a stop-punch operation on the trailing end of the bar section;
- FIG. 7 'FIG. 6 is an end view, similar to FIG. 5 illustrating another suitable configuration for the trailing parts of the roll segments.
- the lower and upper cylinders of the reduction rolling mill are illustrated some- What schematically at 1 and 2, respectively.
- the roll segment on cylinder 1 is shown in section at 3 and the roll segment on cylinder 2 is shown in section at 4.
- the segments are provided with trailing portions g and h of greater radius than the remainder of the roll segment which follow their respective trailing recesses a-b-c and d-e-f and which function conjointly to establish the stop-punch above referred to.
- the bar section 5 to be formed into the blade is shown as it is about to be engaged by the roll segments 3 and 4 to form the body portion of the blade, it being noted that due to the presence of recesses r and r at the leading ends of the roll segments, the leading end portion 5a of the bar section will pass through without any appreciable working by the roll segments.
- FIG. 2 shows the bar section 5 after engagement by the leading rolling surfaces of the roll segments, the leading end 5a of the bar 5, which is to form a foot or head portion, having already been delimited from the intermediate portion 5b which has just commenced to be rolled and reduced by the roll segments 3 and 4.
- FIG. 4 which shows the bar section 5 at the end of the rolling operation
- the metal constituting the trailing end portion 50 of the bar section 5 will have been pressed into the space abcdef constituted by the junction of the posterior recesses of the roll segments 3 and 4.
- the metal nicely fills the angles b and e which otherwise would lack metal because of the rotation of points a and f.
- FIG. 5 shows one suitable embodiment, as viewed when looking in the direction of the arrow of FIG. 4, the trailing portion on roll segment 3 being constituted by two parallel spaced projecting portions g and g which overlap and engage the side faces of a centrally located trailing portion h on roll segment 4 which slides between the projecting portions 51 and 82- FIG.
- trailing portion on roll segment 3 is constituted by an upwardly projecting portion g, which overlaps a similar but complementary configured downwardly projecting portion it on roll segment 4, the inner faces of these two projecting portions being in sliding contact with each other.
- a reduction mill apparatus-for producing a profiled central body portion included between two terminal enlargements on a metallic part comprising upper and lower roll segments adapted to engage and roll said metallic part, said roll segments each being provided with leading and trailing recesses in the rolling surfaces thereof adapted to clear the leading and trailing ends of the metallic part and thus result in the reduction of only the central body portion to the desired profile, and the trailing end of each of said roll segments being provided with a terminal part having a radius greater than the greatest radius of the remainder of the roll segment, said terminal parts acting conjointly to retain the metal at the trailing terminal enlargement which tends to stretch during the rolling and to compress it into the trailing recessed portions of said roll segments.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Metal Rolling (AREA)
Description
Feb. 23, 1965 R. GAURIAT APPARATUS FOR MANUFACTURING METAL PARTS BY DEFORMATION Filed Sept. 7, 1962 INVBNTOR Roger G'aurmi ATTORNEYS United States Patent 1 Claim. (01. 80- 24) This invention pertains to the manufacture of metallic parts, particularly blades for turbo-machines such as steam and gas turbines and also axial compressors, and is related to the improved method for making such blades as disclosed and claimed in a co-pending application Serial No. 222,132, filed September 7, 1962 and assigned to the same assignee as is the instant application.
In accordance with the improved method for making turbine and compressor blades as disclosed in the aforesaid co-pending application, one starts with a metallic bar section of suitable length and passes this bar through a rolling mill, the rolls of which are constituted by segments of a cylinder and wherein one or both ends of these roll segments are provided with recesses so that only the intermediate, or body section of the blade will be produced by the rolling and reduction of an intermediate portion of the metallic bar section. One or both ends of the metallic barsection which are to form the foot, or foot and head respectively of the blade are not rolled because of the end recesses in the roll segments thus leaving substantially unworked masses of the bar at one or both ends respectively. Thereafter, the partly completed blade is transferred to a press where the fillets between the body and foot and head end portions of the blade are finished pressed to the desired curvature and dimensions.
In a case where the blade is to have a head as well as a foot portion, it is necessary to provide, between the body of the blade and the end portion of the length of the original bar section which is last to pass between the roll segments of the rolling mill, a sufficient clearance so that said end portion will not be damaged by the posterior end of the roll segments during ejection. Such a clearance can lead to a fillet zone of connection between that end part, which may be the head or foot, and the reduced body portion that flares too much to be acceptable.
In accordance with the present invention, the roll segments of the rolling mill are designed in such manner that there is no longer any appreciable difference in the fillet zones between the body portion of the blade and the head and foot portions thereof. More particularly, at the posterior end of each roll segment, upper and lower, after the trailing recess intended for the head or foot of the blade, wherever may be the case, there is provided a terminal part with a radius larger than the greatest radius of the remainder of the roll segment which serves the function of retaining the metal which tends to stretch as a result of rolling of the body portion of the blade and, at the end of rotation of the roll segment compresses this metal in order to include the same in the trailing recess. p
This trailing terminal part on the upper and lower roll segments serve conjointly both as a stop retaining the metal and as a punch compressing it. Under its action, the metal is obliged to fill the entire trailing recess and thereby to line the internal angles which, without this compression, might not receive any metal at all.
The invention is illustrated in the accompanying drawings which show one suitable arrangement for the im- 3,170,343 Patented Feb. 23, 1965 "ice these drawingsz' FIGS; 1-4 is a sequence of views showing the bar section in various positions as it passes through and between the roll segments;
FIG. 5 is an end view of the roll section illustrating one suitable configuration for the trailing parts of the roll segments which cooperate to establish a stop-punch operation on the trailing end of the bar section; and
7 'FIG. 6 is an end view, similar to FIG. 5 illustrating another suitable configuration for the trailing parts of the roll segments. I
With reference now to FIGS. 1-4, the lower and upper cylinders of the reduction rolling mill are illustrated some- What schematically at 1 and 2, respectively. The roll segment on cylinder 1 is shown in section at 3 and the roll segment on cylinder 2 is shown in section at 4. At their posterior or trailing end, i.e. the end last to pass between the cylinders, the segments are provided with trailing portions g and h of greater radius than the remainder of the roll segment which follow their respective trailing recesses a-b-c and d-e-f and which function conjointly to establish the stop-punch above referred to.
In FIG. 1, the bar section 5 to be formed into the blade is shown as it is about to be engaged by the roll segments 3 and 4 to form the body portion of the blade, it being noted that due to the presence of recesses r and r at the leading ends of the roll segments, the leading end portion 5a of the bar section will pass through without any appreciable working by the roll segments.
FIG. 2 shows the bar section 5 after engagement by the leading rolling surfaces of the roll segments, the leading end 5a of the bar 5, which is to form a foot or head portion, having already been delimited from the intermediate portion 5b which has just commenced to be rolled and reduced by the roll segments 3 and 4.
In FIG. 3, rolling of the intermediate part 5b of the bar section which is to form the body part of the blade is half finished. The posterior terminal edges a and f of roll segments 3 and 4 respectively have just engaged the surface of the bar 5 while producing a certain flare. At this moment, the stop-punch elements g and h come into contact with the posterior end 50 of the bar 5. V
In FIG. 4, which shows the bar section 5 at the end of the rolling operation, it will be seen that due to the stop punch action provided by the cooperative trailing portions g and h of the roll segments, the metal constituting the trailing end portion 50 of the bar section 5 will have been pressed into the space abcdef constituted by the junction of the posterior recesses of the roll segments 3 and 4. The metal nicely fills the angles b and e which otherwise would lack metal because of the rotation of points a and f.
Moreover, the stop-punch provided by the trailing portions g and h of the roll segments are in relief on the segments and the sum of their outside radius is greater than the interaxial distance of the segments. Hence, it is necessary to machine them in such a way that they interpenetrate so that the rotary movement can continue. For this purpose, various configurations of the trailing portions g and h can be adopted. FIG. 5 shows one suitable embodiment, as viewed when looking in the direction of the arrow of FIG. 4, the trailing portion on roll segment 3 being constituted by two parallel spaced projecting portions g and g which overlap and engage the side faces of a centrally located trailing portion h on roll segment 4 which slides between the projecting portions 51 and 82- FIG. 6 shows a slightly different embodiment wherein the trailing portion on roll segment 3 is constituted by an upwardly projecting portion g, which overlaps a similar but complementary configured downwardly projecting portion it on roll segment 4, the inner faces of these two projecting portions being in sliding contact with each other.
After the bar section 5' has been rolled in the rolling mill section in accordance with the present invention to produce the body portion of the blade, it is then transferred to the press unit as more fully described in the aforesaid co-pending application Serial No; 222,132 for further processing to finish the fillet portions between the body and the head and foot portions.
In conclusion, while the invention has been described in its relation to the production of turbine and like blades, the principles thereof-are equally applicable to any other metallic part having a profiled central or body portion included between two terminal enlargements.
I claim:
In a reduction mill apparatus-for producing a profiled central body portion included between two terminal enlargements on a metallic part, comprising upper and lower roll segments adapted to engage and roll said metallic part, said roll segments each being provided with leading and trailing recesses in the rolling surfaces thereof adapted to clear the leading and trailing ends of the metallic part and thus result in the reduction of only the central body portion to the desired profile, and the trailing end of each of said roll segments being provided with a terminal part having a radius greater than the greatest radius of the remainder of the roll segment, said terminal parts acting conjointly to retain the metal at the trailing terminal enlargement which tends to stretch during the rolling and to compress it into the trailing recessed portions of said roll segments.
References Cited by the Examiner UNITED STATES PATENTS CHARLES W. LANHAM, Primary Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR897569A FR81646E (en) | 1961-09-14 | 1962-05-15 | Method of manufacturing metal parts by deformation |
Publications (1)
Publication Number | Publication Date |
---|---|
US3170343A true US3170343A (en) | 1965-02-23 |
Family
ID=8778938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US222133A Expired - Lifetime US3170343A (en) | 1962-05-15 | 1962-09-07 | Apparatus for manufacturing metal parts by deformation |
Country Status (2)
Country | Link |
---|---|
US (1) | US3170343A (en) |
DE (1) | DE1272266B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130111964A1 (en) * | 2010-07-14 | 2013-05-09 | Hilti Aktiengesellschaft | Production method for a semi-finished product |
US11453042B2 (en) * | 2016-07-15 | 2022-09-27 | Nippon Steel & Sumitomo Metal Corporation | Forging roll device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US121187A (en) * | 1871-11-21 | Improvement in constructing axles | ||
US1068630A (en) * | 1909-12-21 | 1913-07-29 | Andrew C Cunningham | Manufacture of car-axles. |
US1516007A (en) * | 1921-10-28 | 1924-11-18 | American Flexible Bolt Company | Method of making stay bolts |
DE496057C (en) * | 1926-09-09 | 1930-04-14 | Heraeus Vacuumschmelze Akt Ges | Rolling mill for the production, in particular, of workpieces from metals and metal alloys which are difficult to deform |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB660950A (en) * | 1948-08-06 | 1951-11-14 | Nat Machinery Co | Improvements in or relating to apparatus for forging metal |
US2736948A (en) * | 1950-07-03 | 1956-03-06 | Utica Drop Forge & Tool Corp | Forging apparatus |
US2884822A (en) * | 1952-02-13 | 1959-05-05 | Int Nickel Co | Die press |
US2972181A (en) * | 1952-07-11 | 1961-02-21 | Power Jets Res & Dev Ltd | Process for making turbine blades |
GB771639A (en) * | 1954-07-08 | 1957-04-03 | Nat Lead Co | Improvements in combined forging and trimming method and apparatus |
FR1134606A (en) * | 1956-02-11 | 1957-04-15 | Device for forming edges in straight looms with cut picks |
-
1962
- 1962-09-06 DE DEP1272A patent/DE1272266B/en active Pending
- 1962-09-07 US US222133A patent/US3170343A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US121187A (en) * | 1871-11-21 | Improvement in constructing axles | ||
US1068630A (en) * | 1909-12-21 | 1913-07-29 | Andrew C Cunningham | Manufacture of car-axles. |
US1516007A (en) * | 1921-10-28 | 1924-11-18 | American Flexible Bolt Company | Method of making stay bolts |
DE496057C (en) * | 1926-09-09 | 1930-04-14 | Heraeus Vacuumschmelze Akt Ges | Rolling mill for the production, in particular, of workpieces from metals and metal alloys which are difficult to deform |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130111964A1 (en) * | 2010-07-14 | 2013-05-09 | Hilti Aktiengesellschaft | Production method for a semi-finished product |
US9718115B2 (en) | 2010-07-14 | 2017-08-01 | Hilti Aktiengesellschaft | Production method for a semi-finished product and semi-finished product |
US9782820B2 (en) * | 2010-07-14 | 2017-10-10 | Hilti Aktiengesellschaft | Production method for a semi-finished product |
US11453042B2 (en) * | 2016-07-15 | 2022-09-27 | Nippon Steel & Sumitomo Metal Corporation | Forging roll device |
Also Published As
Publication number | Publication date |
---|---|
DE1272266B (en) | 1968-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1678941A (en) | Method of making woven-wire screens | |
US4085490A (en) | Method of making a rolled metal piston ring | |
US3434322A (en) | Method and apparatus for rolling bearing races | |
US4180895A (en) | Methods of forming angled end bearing liners | |
US2714314A (en) | Rotors for rotary gas compressors and motors | |
US3535871A (en) | Method for making chain links | |
US3170343A (en) | Apparatus for manufacturing metal parts by deformation | |
US4164061A (en) | Method of making rotor blades of radial-axial hydraulic machines | |
US2883899A (en) | Retaining ring of uniform section height with means providing for circumferential bending and method of making same | |
DK160383B (en) | PROCEDURE FOR MANUFACTURING A COMMUTOR HALF MAKE | |
US3412611A (en) | Method and apparatus for making an aerofoil-shaped blade | |
US4466267A (en) | Process for forming curved structures, and the resulting structures | |
US3514941A (en) | Conveyor chain link and method of forming same | |
US4214762A (en) | Rolled metal piston ring | |
US2972181A (en) | Process for making turbine blades | |
JP6541024B2 (en) | Mold for hot forging and hot forging method | |
SU360998A1 (en) | METHOD OF PRODUCTION OF BELTED PROFILES | |
JP4900713B2 (en) | Spur gear manufacturing method by cold forging | |
US542801A (en) | Hard mannesmann | |
US892469A (en) | Method of making tunnel-segments. | |
US1770993A (en) | Art of rolling sheet metal | |
SU1348020A1 (en) | Method of assembling composite rolling mill roll | |
US4799694A (en) | Piston ring and method of making the same | |
SU697210A1 (en) | Method of manufacturing profiles | |
US2726307A (en) | Manufacture of turbine blade |