US3285048A - Machines for bending pipes, rods and bars - Google Patents
Machines for bending pipes, rods and bars Download PDFInfo
- Publication number
- US3285048A US3285048A US330921A US33092163A US3285048A US 3285048 A US3285048 A US 3285048A US 330921 A US330921 A US 330921A US 33092163 A US33092163 A US 33092163A US 3285048 A US3285048 A US 3285048A
- Authority
- US
- United States
- Prior art keywords
- bending
- pipe
- head
- rod
- dog
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
Definitions
- the invention has for its object to provide a novel type of bending machine in which pipes, rods and bars can be bent with lesser physical efforts and at higher working speeds than hitherto.
- the machine is characterized by the fact that it comprises a rotatably mounted, preferably motor-driven bending head which on its end surface carries a mandrel coaxial with the axis of rotation of the head, and a dog which is laterally offset in relation to the mandrel and serves to take along a pipe or rod length placed between the mandrel and the dog, and that a sector-shaped abutment for the pipe or rod length is pivotally mounted on a shaft parallel to the axis of the bending head and fixedly arranged in relation to the machine frame at a radial distance from the axis of the bending head larger than that of the dog from said axis, said radial distance being so adapted relative to the radius of the sector-shaped abutment that the sector edge surface thereof constitutes a direct extension of the surface of application of the dog for
- FIG. 1 is an elevational view of the machine, partly in vertical section;
- FIG. 2 is a plan view of the machine
- FIG. 3 is an elevational view of a detail.
- the machine illustrated in the drawings has a frame 1 with a sheet metal covering 2 and a door 3- at the front. At its upper end the frame supports a bottom plate 4 which in turn supports a clutch head 5 mounted for rotation on said bottom plate, a bending head 7 secured to the upper side of said bottom plate by means of bolts 6, a stationary machine insert comprising an intermediate bearing plate 8 and a metal sheet 9 mounted on top of said plate 8.
- the intermediate bearing plate .and the metal sheet 9 are suspended by means of bolts 10 at some 3,285,048 Patented Nov. 15, 1966" 'ice distance beneath the bottom plate 4.
- a pneumatic device 12 Suspended by means of bolts 11 from the bearing plate 8 are a pneumatic device 12 and an upwardly directed universal joint shaft 13 which is connected to said pneumatic device 12 and the upper edge of which is mounted in the clutch head.
- a gear 14 Secured on the shaft 13 is a gear 14 which is in engagement with a driving gear 15 (indicated in FIG. 2) on the output shaft of a reduction gear (not shown) over which power is supplied from an electric motor.
- a clutch cone 17 On the upper side of the gear 14 is disposed a clutch cone 17 which is fixedly united with the gear 14 by bolts 16 and adapted to cooperate with the clutch head 5 when said cone is raised to an upper position by means of the pneumatic device 12 to transmit power to the bending head 7.
- the device is electro-magnetically controlled by means of a circuit which is adapted to be closed manually and opens automatically as will be explained in the following.
- the bending head 7 On the upper side the bending head 7 has an exchangeable bending mandrel 18 which is screwed into a threaded hole in center of the bending head and which determines the radius of curvature of the bending to be performed on a pipe or rod length. Also provided in the bending head is a downwardly widening, i.e., keyhole-shaped guide groove 19 which extends rectilinearly from the circumference of the head in a parallelly laterally offset relationship to a diameter of said head and serves to secure a movable dog 20 in the desired position in said groove by means of a tensioning screw 21. As shown in FIG.
- the dog 20 has an upstanding shoulder 22 against which the pipe or rod 23 to be bent is applied in that the dog 20 i clamped in such a position in the groove 19 that the distance between the mandrel 18 and the shoulder 22 (measured at right angles to the latter) is equal to the diameter of the pipe or rod.
- a eross-sectioually dovetailed groove 24 in which a stop mean-s 25 of corresponding shape is 'slidable and can be clamped in the desired position by means of a tensioning' screw (not shown).
- the bending head 7 has a position of rest which is determined by a stop means (not shown) fixedly mounted on its circumference abutting a stop means (not shown) on the bottom plate 4.
- the head 7 Upon operation of the bending head 7 after engagement of the clutch 5, 17 by means of the pneumatic device 12, whenthe latter has been made operative by manual closing of the the abovementioned circuit, the head 7 turns against the action of a return spring (not shown) until the stop means 25 meets a switch means (not shown) disposed in the path of said stop means and serving to automatically open the circuit so that the head stops and is then returned to its position of rest in which said switch means is again closed by suitable means.
- the angle of rotation of the bending head 7 is determined by the position of the stop means 25.
- the angular range within which the stop means can be set amounts to approximately
- a sector-shaped arm 26 serving as an abutment for the pipe or rod 23 is pivotally mounted at one end in the center of the sector on the vertical pivot pin 27 which is fixedly arranged in relation to the bottom plate 4 at one side of the machine frame but can be set in positions at various distances from said bottom plate.
- the bottom plate 4 has a lateral projection 28 welded to it, and a threaded lower endportion of the pivot pin 27 is inserted in a slot 29 in said later-a1 projection 28 and clamped in the desired position along said slot by means of a nut 31.
- the position of rest of the bending heading 7 is chosen in such a way relative to the lateral projection 28 that in this position the guide groove 19 is parallel with, but slightly laterally off-set from, the slot 29.
- the arm 26 has a position of rest (determined as explained in the following) in which one side edge of the arm is aligned with one end edge of the dog 20, as shown in FIG. 2.
- the sector edge surface of the arm 26 is caused to form an-extension of the inner side edge surface of the dog 20.
- the arm 26 On the upper side adjacent to the sector edge the arm 26 has an elevated portion 32 which extends concentrically with said sect-or edge and has a surface of application for the pipe or rod 23, said surface forming a direct extension of the surface of application on the shoulder 22.
- a pipe or rod length 23 is performed as follows.
- the dog 20 is first set at that distance from the mandrel which corresponds to the pipe or rod diameter, and then the pipe or rod is placed freely between the mandrel 18 and said dog 20 in such a position that one end of said pipe or rod, preferably that which is the lowermost one in FIG.
- the machine as described above can be utilized for bending not only pipes and rods of the same material throughout but also pipes the hollow interior of which is entirely filled with another material.
- the machine is particularly suited for bending electric tubular heating elements having an outer tubular sheath in which one or more resistance wires are embedded in a tightly compasted mass of pulver'u-lent insulating material.
- a machine for bending a pipe, rod and bar coanprising a rotatably mountedrnotor-driven bending head.
- a dog which can be rfixed at difierent'distances from the mandrel and serves to take along a length of the pipe or rod placed between the mandrel and the dog, a sector-shaped abutment for the length of the pipe or rod, a machine frame with said abutment being pivotally mounted on a shaft parallel to the axis of the bending 'head and fixedly arranged in relation to said machine frame at a radial distance from the axis of the bending head larger than that of the dog from said axis, said radial-distance being so adapted relative to the radius of the sector-shaped abutment that the sector edge surface thereof constitutes a direct extension of the surface of application of the dog for the length of pipe or rod in the position occupied by said bending head at the start of the bending operation in order that said abutment may be carried along by the length of pipe or rod
- stop means comprises a first stop member being displaceable in a groove in a circumference of said bending head and a second stop means which is disposed on said bending head for determining the position of rest thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE55063 | 1963-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3285048A true US3285048A (en) | 1966-11-15 |
Family
ID=20256746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US330921A Expired - Lifetime US3285048A (en) | 1963-01-18 | 1963-12-16 | Machines for bending pipes, rods and bars |
Country Status (5)
Country | Link |
---|---|
US (1) | US3285048A (de) |
AT (1) | AT245333B (de) |
CH (1) | CH425412A (de) |
DE (1) | DE1527256A1 (de) |
GB (1) | GB1065890A (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3540249A (en) * | 1967-12-13 | 1970-11-17 | James L Sawyer | Apparatus for shaping pliable workpieces |
US4986104A (en) * | 1988-07-19 | 1991-01-22 | Alessandro Caporusso | Portable pipe-binding minimachine |
US5284040A (en) * | 1992-12-09 | 1994-02-08 | Emerson Electric Co. | Tube bending apparatus with stop and abutment means to set bend angle |
CN113426861A (zh) * | 2020-09-08 | 2021-09-24 | 郑国强 | 一种高效折弯机 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2116720B (en) * | 1982-03-08 | 1986-03-12 | Roeh Ind Ltd | Flow rate sensor |
DE4442030A1 (de) * | 1994-11-25 | 1996-05-30 | Sen Bernhard Kreye | Verfahren zum Biegen von Metallprofilen, vorzugsweise Metallprofilen, die als Sprossen für Fenster und Türen verwendet werden, und Planscheibenbiegemaschine zur Durchführung des Verfahrens |
CN113500151B (zh) * | 2021-09-09 | 2021-11-30 | 南通朗迪机械科技有限公司 | 一种健身圈用金属圈折弯装置 |
CN114770089B (zh) * | 2022-04-20 | 2023-10-10 | 满洲里达赉湖热电有限公司 | 一种大型立式凝结水泵中心调整装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US983664A (en) * | 1909-01-29 | 1911-02-07 | Simmons Mfg Co | Tube-bending machine. |
US2621702A (en) * | 1949-10-10 | 1952-12-16 | Peddinghaus Paul Ferd | Machine for bending steel profiles and rods |
-
1963
- 1963-12-16 US US330921A patent/US3285048A/en not_active Expired - Lifetime
- 1963-12-17 CH CH1547663A patent/CH425412A/de unknown
- 1963-12-17 AT AT1013763A patent/AT245333B/de active
- 1963-12-20 GB GB50550/63A patent/GB1065890A/en not_active Expired
- 1963-12-20 DE DE19631527256 patent/DE1527256A1/de active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US983664A (en) * | 1909-01-29 | 1911-02-07 | Simmons Mfg Co | Tube-bending machine. |
US2621702A (en) * | 1949-10-10 | 1952-12-16 | Peddinghaus Paul Ferd | Machine for bending steel profiles and rods |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3540249A (en) * | 1967-12-13 | 1970-11-17 | James L Sawyer | Apparatus for shaping pliable workpieces |
US4986104A (en) * | 1988-07-19 | 1991-01-22 | Alessandro Caporusso | Portable pipe-binding minimachine |
US5284040A (en) * | 1992-12-09 | 1994-02-08 | Emerson Electric Co. | Tube bending apparatus with stop and abutment means to set bend angle |
CN113426861A (zh) * | 2020-09-08 | 2021-09-24 | 郑国强 | 一种高效折弯机 |
Also Published As
Publication number | Publication date |
---|---|
CH425412A (de) | 1966-11-30 |
GB1065890A (en) | 1967-04-19 |
DE1527256A1 (de) | 1969-07-24 |
AT245333B (de) | 1966-02-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4062216A (en) | Metal bending methods and apparatus | |
US3995466A (en) | Machine for roll grooving of pipe | |
US3285048A (en) | Machines for bending pipes, rods and bars | |
US3855840A (en) | Material support apparatus for a press brake system | |
EP0198984B1 (de) | Biegevorrichtung | |
US5301530A (en) | Tube bending apparatus | |
EP0407443B1 (de) | Faltvorrichtung | |
US3287952A (en) | Bending machine | |
US2357812A (en) | Metal tube bending machine | |
NO151242B (no) | Fremgangsmaate for aa binde sammen et uretanmateriale og et vulkanisert gummiunderlag | |
US3316743A (en) | Straightening machine | |
US3545247A (en) | Bending machine | |
US2488896A (en) | Dual pivoted bender for simultaneously bending two parallel lengths of metal tubing | |
US2316049A (en) | Machine for bending pipes and the like | |
US3044526A (en) | Brake for forming metal plate and sheet | |
US1774155A (en) | Sheet-metal-working machine | |
US3535905A (en) | Rectilinear edge flanging tool for sheet metal workpieces | |
US3168919A (en) | Flanging machines | |
US3505852A (en) | Tube bending machine | |
JP3035025B2 (ja) | 型材曲げ機 | |
US3729969A (en) | Barrel forming press | |
US2219493A (en) | Apparatus for welding thin silicon steel and the like | |
US3267714A (en) | Metal twisting apparatus | |
US4921217A (en) | Ground rods and apparatus for forming and placing such rods | |
CN220311408U (zh) | 一种金属棒材折弯机 |