CN112958668A - Detection equipment for rebound position and adjustment action point of bent pipe - Google Patents
Detection equipment for rebound position and adjustment action point of bent pipe Download PDFInfo
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- CN112958668A CN112958668A CN202110151881.7A CN202110151881A CN112958668A CN 112958668 A CN112958668 A CN 112958668A CN 202110151881 A CN202110151881 A CN 202110151881A CN 112958668 A CN112958668 A CN 112958668A
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- bending
- metal pipe
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- 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
- B21D7/14—Bending rods, profiles, or tubes combined with measuring of bends or lengths
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a detection device for the springback position and the adjustment action point of a bent pipe, wherein a propulsion cylinder is fixedly arranged on a workbench, a working rod of the propulsion cylinder is fixedly connected with a propulsion head, the propulsion head is aligned to the longitudinal direction of a metal pipe, two corresponding positions on two sides of the side surface of the metal pipe are respectively provided with a side stop block and a bending column, and the other side of the metal pipe corresponding to the propulsion cylinder is fixedly provided with a transverse stop block; a bending hydraulic cylinder is arranged on the side surface of the metal pipe and between the side stop block and the transverse stop block, a working rod of the bending hydraulic cylinder is perpendicular to the metal pipe, the working rod of the bending hydraulic cylinder is fixedly connected with a bending push head, a cylinder body of the bending hydraulic cylinder is fixedly connected with a moving motor, the moving motor is connected with a gear, the gear is meshed with a rack, and the rack is parallel to the metal pipe; the radial periphery of the bending column is provided with a circular arc-shaped bending groove, and the bending column is detachably connected to the workbench. The invention can change the stress point of the bent pipe and detect the rebound position.
Description
Technical Field
The invention relates to the technical field of bent pipe detection equipment, in particular to bent pipe resilience position and adjusting action point detection equipment capable of changing stress points of bent pipes and detecting resilience positions.
Background
The pipe bending machine is mainly used for bending steel pipes in electric power construction, boilers, bridges, ships, furniture, decoration and the like, and has the advantages of multiple functions, reasonable structure, simplicity in operation and the like. The machine has the pipe bending function, can also use the oil cylinder as a hydraulic jack, has the characteristics of low price and convenient use compared with numerical control pipe bending equipment, and occupies the leading product position in the domestic pipe bending machine market.
The bending of the pipe by the pipe bender is the same as the bending of the plate. Under the condition of pure bending, when a pipe with the outer diameter of D and the wall thickness of t is bent under the action of an external moment M, the pipe wall on the outer side of the neutral layer is under the action of a tensile stress sigma 1, and the pipe wall becomes thin; the tube wall inside the neutral layer is under the action of tensile stress sigma 1, and the tube wall becomes thicker. Moreover, the shape of the cross section is changed from a circle to an approximate ellipse due to the action of the applied forces F1 and F2, when the deformation amount is too large, the outer pipe wall cracks, and the inner pipe wall wrinkles.
The deformation degree of the pipe depends on the magnitude of the relative bending radius R/D and the relative thickness t/D, and the smaller the R/D and t/D values are, the larger the deformation degree is. In order to ensure the forming quality of the pipe fitting, the deformation degree must be controlled within an allowable range, and the limit of the pipe bending forming depends on the mechanical property of the material and the bending method, and also considers the use requirement of the pipe fitting.
The forming limit of the tube should include the following: 1) the maximum elongation deformation in the stretching deformation area outside the neutral layer does not exceed the plastic allowance value of the material to generate fracture; 2) in the compression deformation zone at the inner side of the neutral layer, the thin-wall structure part under the action of tangential pressure stress cannot exceed instability and wrinkle; 3) if the tube has the requirement of ovality, the cross section of the tube is controlled to generate distortion; 4) and if the pipe has the strength requirement for bearing the internal pressure, controlling the forming limit of wall thickness reduction of the pipe.
For pipe elbows for special applications, such as ships. The influence of the stress point of the bent pipe on the bending degree and the internal stress generated by the resilience force of the bent pipe on the multi-section bent pipe require a detection device for detecting the resilience position and the adjustment action point of the bent pipe, wherein the detection device can change the stress point of the bent pipe and detect the resilience position.
Disclosure of Invention
The invention aims to provide a detection device for detecting the rebounding position and the adjusting action point of a bent pipe, which can change the stress point of the bent pipe and detect the rebounding position.
A detection apparatus for return bend spring-back position and adjustment action point, comprising:
the metal pipe bending machine comprises a workbench, wherein a propelling cylinder is fixedly arranged on the workbench, a working rod of the propelling cylinder is fixedly connected with a propelling head, the propelling head is aligned to the longitudinal direction of a metal pipe, side stop blocks and bending columns are respectively arranged at corresponding positions on two sides of the side surface of the metal pipe, and a transverse stop block is fixedly arranged at the end part of the metal pipe corresponding to the other side of the propelling cylinder;
a bending hydraulic cylinder is arranged on the side face of the metal pipe between the side stop block and the transverse stop block, a working rod of the bending hydraulic cylinder is perpendicular to the metal pipe, the working rod of the bending hydraulic cylinder is fixedly connected with a bending push head, a cylinder body of the bending hydraulic cylinder is fixedly connected with a moving motor, the moving motor is connected with a gear, the gear is meshed with a rack, and the rack is parallel to the metal pipe;
the bending device comprises a bending column, a rotary motor, a force sensor, a bending groove, an encoder and a controller, wherein the radial periphery of the bending column is provided with an arc-shaped bending groove, the bending column is detachably connected to a workbench, the rotary motor is fixedly arranged above the bending column and is connected with the force sensor through a connecting rod, the force sensor and the bending groove are located on a uniform horizontal plane, and the end part of the rotary motor is provided with the encoder;
the controller is respectively connected with the propulsion cylinder, the bending hydraulic cylinder, the moving motor, the rotating motor, the force sensor, the encoder and the touch screen.
The workbench is a flat plate horizontally arranged in a cuboid.
The propulsion cylinder and the longitudinal center of the metal pipe are collinear.
The lateral stop blocks are cuboids, and the transverse stop blocks are cuboids.
The propelling head and the bending pushing head are cuboids respectively, and the end part of the bending pushing head is provided with a radius.
The connecting rod is L-shaped.
The bending column is cylindrical.
The single section of the bending groove is coincided with the metal pipe part.
A propelling cylinder is fixedly arranged on a workbench, a working rod of the propelling cylinder is fixedly connected with a propelling head, the propelling head is aligned to the longitudinal direction of a metal pipe, side stop blocks and bending columns are respectively arranged at corresponding positions on two sides of the side surface of the metal pipe, and a transverse stop block is fixedly arranged at the end part of the metal pipe corresponding to the other side of the propelling cylinder; a bending hydraulic cylinder is arranged on the side surface of the metal pipe and between the side stop block and the transverse stop block, a working rod of the bending hydraulic cylinder is perpendicular to the metal pipe, the working rod of the bending hydraulic cylinder is fixedly connected with a bending push head, a cylinder body of the bending hydraulic cylinder is fixedly connected with a moving motor, the moving motor is connected with a gear, the gear is meshed with a rack, and the rack is parallel to the metal pipe; the radial periphery of the bending column is provided with an arc-shaped bending groove, the bending column is detachably connected to the workbench, a rotating motor is fixedly arranged above the bending column, the rotating motor is connected with a force sensor through a connecting rod, the force sensor and the bending groove are positioned on a uniform horizontal plane, and the end part of the rotating motor is provided with an encoder; the controller is respectively connected with the propulsion cylinder, the bending hydraulic cylinder, the moving motor, the rotating motor, the force sensor, the encoder and the touch screen. The invention can change the stress point of the bent pipe and detect the rebound position.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the structure of the rotating motor and the bending column of the present invention;
FIG. 3 is a control relationship diagram of the present invention;
in the figure: 1. the device comprises a workbench, 2, a propelling cylinder, 3, a propelling head, 4, a side stop block, 5, a bending column, 6, a transverse stop block, 7, a metal pipe, 8, a bending hydraulic cylinder, 9, a bending propelling head, 10, a moving motor, 11, a gear, 12, a rack, 13, a bending groove, 14, a rotating motor, 15, a connecting rod, 16, a force sensor, 17, an encoder, 18, a controller, 19 and a touch screen.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
A detection apparatus for return bend spring-back position and adjustment action point, comprising: the device comprises a workbench 1, wherein a propelling cylinder 2 is fixedly arranged on the workbench 1, a working rod of the propelling cylinder 2 is fixedly connected with a propelling head 3, the propelling head 3 is aligned to the longitudinal direction of a metal pipe 7, two corresponding positions on two sides of the side surface of the metal pipe 7 are respectively provided with a side stop block 4 and a bending column 5, and the other side of the end part of the metal pipe 7 corresponding to the propelling cylinder 2 is fixedly provided with a transverse stop block 6; a bending hydraulic cylinder 8 is arranged on the side face of the metal tube 7 and between the side blocking block 4 and the transverse blocking block 6, a working rod of the bending hydraulic cylinder 8 is perpendicular to the metal tube 7, the working rod of the bending hydraulic cylinder 8 is fixedly connected with a bending pushing head 9, a cylinder body of the bending hydraulic cylinder 8 is fixedly connected with a moving motor 10, the moving motor 10 is connected with a gear 11, the gear 11 is meshed with a rack 12, and the rack 12 is parallel to the metal tube 7; the radial periphery of the bending column 5 is provided with an arc-shaped bending groove 13, the bending column 5 is detachably connected to the workbench 1, a rotating motor 14 is fixedly arranged above the bending column 5, the rotating motor 14 is connected with a force sensor 16 through a connecting rod 15, the force sensor 16 and the bending groove 13 are positioned on a uniform horizontal plane, and the end part of the rotating motor 14 is provided with an encoder 17; the controller 18 is connected with the propulsion cylinder 2, the bending hydraulic cylinder 8, the moving motor 10, the rotating motor 14, the force sensor 16, the encoder 17 and the touch screen 19 respectively.
The workbench 1 is a flat plate horizontally arranged in a cuboid. The cylinder 2 and the longitudinal center of the metal pipe 7 are pushed to be collinear. The side block 4 is a cuboid, and the transverse block 6 is a cuboid. The pushing head 3 and the bending pushing head 9 are cuboids respectively, and the end part of the bending pushing head 9 is provided with a radius. The connecting rod 15 is L-shaped. The bending column 5 is cylindrical. The single cross section of the bending groove 13 and the metal tube 7 partially coincide.
The controller 18 and the touch screen 19 form an interactive system, and the controller 18 sends the motion states of the propulsion cylinder 2, the bending hydraulic cylinder 8, the moving motor 10 and the rotating motor 14 to the touch screen 19 for display. The controller 18 sends the force signals and the rotation angle signals collected by the force sensor 16 and the encoder 17 to the touch screen 19 for display and storage. The motion states of the propulsion cylinder 2, the bending hydraulic cylinder 8, the moving motor 10 and the rotating motor 14 can be adjusted by the controller 18 through the touch screen 19.
When the metal pipe bending device is used, the metal pipe 7 is placed between the side stop block 4 and the bending column 5, the controller 18 controls the propulsion cylinder 2 on the workbench 1 to drive the propulsion head 3 to push the metal pipe 7, and the metal pipe 7 is aligned to the transverse stop block 6. The controller 18 controls the bending hydraulic cylinder 8 to drive the bending pushing head 9 to bend the side face of the metal tube 7, and the metal tube 7 bends along the bending groove 13 of the bending column 5. The controller 18 controls the rotating motor 14 to drive the connecting rod 15 to rotate, and further drives the force sensor 16 on the connecting rod 15 to rotate, so that the bending angle behind the metal tube 7 is measured. Specifically, the encoder 17 can detect the rotation angle of the rotating motor 14, the force sensor 16 sends a force signal received by the force sensor 16 to the controller 18 after touching two bent edges of the bent metal tube 7, and the deviation between the actual bending angle of the metal tube 7 and the required bending angle can be obtained by combining the collected rotation angles of the encoder 17.
For different metal pipes 7, the controller 18 controls the mobile motor 10 to rotate, drives the gear 11 to rotate along the rack 12, further drives the bending hydraulic cylinder 8 to move longitudinally along the metal pipes 7, can select different bending stress points of the same metal pipe 7 to bend, and performs data sampling of different action points on the resilience force and the bending effect of the bent pipe, so as to provide a basis for selecting a proper stress point for subsequent analysis.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a detection equipment of return bend resilience position and regulation action point which characterized in that includes:
the device comprises a workbench (1), wherein a propelling cylinder (2) is fixedly arranged on the workbench (1), a working rod of the propelling cylinder (2) is fixedly connected with a propelling head (3), the propelling head (3) is aligned to the longitudinal direction of a metal pipe (7), two corresponding positions on two sides of the side surface of the metal pipe (7) are respectively provided with a side stop block (4) and a bending column (5), and the other side of the end part of the metal pipe (7) corresponding to the propelling cylinder (2) is fixedly provided with a transverse stop block (6);
a bending hydraulic cylinder (8) is arranged on the side face of the metal pipe (7) and between the side stop block (4) and the transverse stop block (6), a working rod of the bending hydraulic cylinder (8) is perpendicular to the metal pipe (7), the working rod of the bending hydraulic cylinder (8) is fixedly connected with a bending push head (9), a cylinder body of the bending hydraulic cylinder (8) is fixedly connected with a moving motor (10), the moving motor (10) is connected with a gear (11), the gear (11) is meshed with a rack (12), and the rack (12) is parallel to the metal pipe (7);
the radial periphery of the bending column (5) is provided with an arc-shaped bending groove (13), the bending column (5) is detachably connected to the workbench (1), a rotating motor (14) is fixedly arranged above the bending column (5), the rotating motor (14) is connected with a force sensor (16) through a connecting rod (15), the force sensor (16) and the bending groove (13) are positioned on a uniform horizontal plane, and the end part of the rotating motor (14) is provided with an encoder (17);
the controller (18) is respectively connected with the propulsion cylinder (2), the bending hydraulic cylinder (8), the moving motor (10), the rotating motor (14), the force sensor (16), the encoder (17) and the touch screen (19).
2. The detection equipment for the rebound position and the adjustment action point of the elbow pipe according to the claim 1, wherein the workbench (1) is a flat plate horizontally arranged in a cuboid.
3. A detection device of the rebound position and adjustment action point of a bent pipe according to claim 1, characterized in that the longitudinal centers of the propulsion cylinder (2) and the metal pipe (7) are collinear.
4. The apparatus for detecting the rebound position and the adjustment action point of a bent pipe according to claim 1, wherein the side stoppers (4) are rectangular solids, and the lateral stoppers (6) are rectangular solids.
5. The detection equipment for the rebound position and the adjustment action point of the elbow pipe according to claim 1, wherein the pushing head (3) and the bending pushing head (9) are respectively rectangular cuboids, and the end part of the bending pushing head (9) is provided with a round.
6. A device for detecting the rebound position and the adjustment action point of a bent pipe according to claim 1, wherein the connecting rod (15) is L-shaped.
7. A device for detecting the rebound position and the adjustment action point of a bent pipe according to claim 1, wherein the bending column (5) is cylindrical.
8. A device for detecting the rebound position and the adjustment action point of a bent pipe according to claim 1, wherein the single cross section of the bending groove (13) is partially overlapped with the metal pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110151881.7A CN112958668B (en) | 2021-02-03 | 2021-02-03 | Detection equipment for resilience position of bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110151881.7A CN112958668B (en) | 2021-02-03 | 2021-02-03 | Detection equipment for resilience position of bent pipe |
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| Publication Number | Publication Date |
|---|---|
| CN112958668A true CN112958668A (en) | 2021-06-15 |
| CN112958668B CN112958668B (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110151881.7A Active CN112958668B (en) | 2021-02-03 | 2021-02-03 | Detection equipment for resilience position of bent pipe |
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| Country | Link |
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| CN (1) | CN112958668B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4413494A (en) * | 1981-02-13 | 1983-11-08 | Morgan Construction Company | Pinch roll system for vertical laying heads |
| DE19630163C1 (en) * | 1996-07-26 | 1997-12-11 | Schmitz & Brill Gmbh & Co Kg | Tool for clamping and bending e.g. steel tube |
| CN102350452A (en) * | 2011-07-07 | 2012-02-15 | 株洲双菱科技有限公司 | Large-diameter radian bending method of steel pipe and large-bend pipe bender |
| CN104324991A (en) * | 2014-10-31 | 2015-02-04 | 天津市中重金属结构有限公司 | Metal tube bending equipment |
| CN205096296U (en) * | 2015-09-28 | 2016-03-23 | 重庆戈林物流有限责任公司 | Roller type swan neck system |
| CN106552843A (en) * | 2015-09-28 | 2017-04-05 | 重庆戈林物流有限责任公司 | A kind of roller type swan neck system |
| CN108555085A (en) * | 2018-03-05 | 2018-09-21 | 蒋欣 | A kind of metallic conduit swan neck system with automatic regulation function |
| CN207952295U (en) * | 2018-03-27 | 2018-10-12 | 湖北天力汽车零部件制造有限公司 | A kind of automobile pipe fitting process equipment |
| CN208810870U (en) * | 2018-05-17 | 2019-05-03 | 南京世岐货架型材制造有限公司 | A kind of metal tube processing pressing and bending device |
| CN209035202U (en) * | 2018-10-31 | 2019-06-28 | 广东金顺电器有限公司 | A kind of curved screw thread pipe device |
| CN110935762A (en) * | 2019-12-02 | 2020-03-31 | 嵊州市荣飞纺织机械有限公司 | Pipe bending device for hardware manufacturing |
-
2021
- 2021-02-03 CN CN202110151881.7A patent/CN112958668B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4413494A (en) * | 1981-02-13 | 1983-11-08 | Morgan Construction Company | Pinch roll system for vertical laying heads |
| DE19630163C1 (en) * | 1996-07-26 | 1997-12-11 | Schmitz & Brill Gmbh & Co Kg | Tool for clamping and bending e.g. steel tube |
| CN102350452A (en) * | 2011-07-07 | 2012-02-15 | 株洲双菱科技有限公司 | Large-diameter radian bending method of steel pipe and large-bend pipe bender |
| CN104324991A (en) * | 2014-10-31 | 2015-02-04 | 天津市中重金属结构有限公司 | Metal tube bending equipment |
| CN205096296U (en) * | 2015-09-28 | 2016-03-23 | 重庆戈林物流有限责任公司 | Roller type swan neck system |
| CN106552843A (en) * | 2015-09-28 | 2017-04-05 | 重庆戈林物流有限责任公司 | A kind of roller type swan neck system |
| CN108555085A (en) * | 2018-03-05 | 2018-09-21 | 蒋欣 | A kind of metallic conduit swan neck system with automatic regulation function |
| CN207952295U (en) * | 2018-03-27 | 2018-10-12 | 湖北天力汽车零部件制造有限公司 | A kind of automobile pipe fitting process equipment |
| CN208810870U (en) * | 2018-05-17 | 2019-05-03 | 南京世岐货架型材制造有限公司 | A kind of metal tube processing pressing and bending device |
| CN209035202U (en) * | 2018-10-31 | 2019-06-28 | 广东金顺电器有限公司 | A kind of curved screw thread pipe device |
| CN110935762A (en) * | 2019-12-02 | 2020-03-31 | 嵊州市荣飞纺织机械有限公司 | Pipe bending device for hardware manufacturing |
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| CN112958668B (en) | 2022-12-20 |
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