CN102716953A - Cam type variable-curvature pipe bending system and method - Google Patents
Cam type variable-curvature pipe bending system and method Download PDFInfo
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- CN102716953A CN102716953A CN2012102063928A CN201210206392A CN102716953A CN 102716953 A CN102716953 A CN 102716953A CN 2012102063928 A CN2012102063928 A CN 2012102063928A CN 201210206392 A CN201210206392 A CN 201210206392A CN 102716953 A CN102716953 A CN 102716953A
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Abstract
The invention relates to a cam type variable-curvature pipe bending system and method. A pipe to be bent is positioned onto a lead screw pushing mechanism, and a first servo motor drives the lead screw pushing mechanism to push the pipe to move ahead. After the moving distance of the pipe achieves a beginning pipe bending set value, a second servo motor drives a worm speed reducer to work and drives a main shaft and a cam to rotate at a constant speed, and a force application roller connected at the end part of a cam driven member applies pressure onto the pipe, so that the pipe is bent. When the main shaft drives the cam to operate for one revolution, the main shaft and the cam stop operation, the cam driven member drives the force application roller to recover to the original state along with the cam, and the circular arc part of the pipe is bent; and the first servo motor drives the lead screw pushing mechanism to continue to move for a distance and then return to the original position, and the pipe is manually taken. The system and the method do not need a die, and the bending of the variable-curvature pipe can be realized through one-step bending. If the bending curvature of the pipe is changed, only a cam needs to be replaced, the structure of a pipe bending machine needs not to be changed, and the die needs not to be designed and processed. The adjustment and the installation are convenient.
Description
Technical field
The invention belongs to variable curvature tube bending method, be specifically related to a kind of cam-type variable curvature tube bending system and method.
Background technology
In commercial production; Run into and to become one section curvature different arcs to tube bending through regular meeting, promptly will carry out the crooked pipe of variable curvature, the bending of small hand tractor handle pipe variable curvature circular arc is wherein arranged; The bending of the skeleton part rectangular tube variable curvature circular arc of passenger car; The bending of variable curvature pipe circular arc realizes by the bending method of routine is difficult, if adopt the method for punching press then need make a large amount of moulds, and not only consumptive material but also time-consuming; Then the efficient low quality is poor to adopt the method for manual bend pipe.
Summary of the invention
The objective of the invention is to solve the technical barrier of variable curvature bend pipe, the cam-type variable curvature tube bending system and method for the more convenient realization variable curvature bend pipe of a kind of ability is provided.
For achieving the above object; System of the present invention comprises platform and is installed in first servomotor on the platform; The output of said first servomotor links to each other with the leading screw pushing mechanism that pipe is installed, and a side that is positioned at the pipe running orbit in the platform lower end is equipped with electric machine support, and the platform upper end of opposite side is equipped with the bend pipe wheel; Interconnective servomotor and reducer of turbodrill are installed on the described electric machine support; The output of reducer of turbodrill is equipped with the main shaft of the central through hole that passes platform, on main shaft, is set with cam, on platform, also is equipped with and corresponding cam follower of cam and guide pad; Cam follower one end drives with cam, but an end is connected with the application of force roller that the swan-neck period of the day from 11 p.m. to 1 a.m puts on action of cam power the rotation on the pipe.
The backing plate that matches with the leading screw pushing mechanism also is installed on the described platform.
A pair of directive wheel also is installed on the running route of described pipe.
Described first, second servomotor links to each other with PLC respectively.
The girth of described cam base circle equals pipe circular arc portion total length.
Method of the present invention is following:
1) at first, treating that crooked pipe is placed on the initial position of backing plate, even the center line of pipe overlaps with two directive wheel centre position center lines, the end with pipe is positioned on the leading screw pushing mechanism again;
2) then; PLC controls first servomotor drive leading screw pushing mechanism promotion pipe and moves ahead between two directive wheels along two directive wheel centre position center lines, and after the displacement of pipe reached beginning bend pipe setting value, promptly the beginning bending point of pipe had run to bend pipe wheel place; PLC control drives the second servomotor work of reducer of turbodrill; Drive the rotation of main shaft and cam constant speed, the linear velocity on the cam generating circle is identical with the speed of pipe operation, and cam driving cam driven member slides along guide pad; The application of force roller pressure adding power that is connected the cam follower end realizes the bending of pipe on pipe;
When driving cam fortune, main shaft circles; Main shaft and cam are out of service; Cam follower drives application of force roller and returns to original state with cam; The pipe circular arc portion is crooked to be accomplished, and PLC controlled and turned back to initial position again, the artificial pipe that takes out after first servomotor drives leading screw pushing mechanism continuation operation one segment distance this moment.
Advantage of the present invention is:
The first, do not need mould, can realize the variable curvature tube bending basically through first order buckling;
The second, fricton-tight between pipe and the application of force roller surface when crooked, noise is little;
The 3rd, if the tube bending curature variation, need only Design and Machining cam again, change the length of cam follower, write the PLC control program again, need not to change the bending machine structure, also need not the Design and Machining mould, adjustment, installation are easily.
Description of drawings
Fig. 1 is that overall structure master of the present invention looks sketch map;
Fig. 2 is the schematic top plan view of Fig. 1;
The amount of movement sketch map at respective cams pressure spot place when Fig. 3 is bending.
Wherein: platform 1, servomotor 2, leading screw pushing mechanism 3, pipe 4, backing plate 5, directive wheel 6, main shaft 9, cam 10, turbine slows down, and 11, electric machine support 12, servomotor 13, PLC14, bend pipe wheel 15, application of force roller 16, guide pad 17, cam follower 18.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Referring to Fig. 1; 2; The present invention includes platform 1 and be installed in first servomotor 2 on the platform 1, the output of said first servomotor 2 links to each other with the leading screw pushing mechanism 3 that pipe 4 is installed, and the backing plate 5 that matches with leading screw pushing mechanism 3 also is installed on the platform 1; A pair of directive wheel 6 also is installed on pipe 4 running routes; A side that is positioned at pipe 4 running orbits in platform 1 lower end is equipped with electric machine support 12, and platform 1 upper end of opposite side and the rear end that is positioned at directive wheel 6 are equipped with bend pipe wheel 15, and interconnective servomotor 13 and reducer of turbodrill 11 are installed on the described electric machine support 12; The output of reducer of turbodrill 11 is equipped with the main shaft 9 of the central through hole that passes platform 1; On main shaft 9, be set with cam 10, on platform, also be equipped with and cam 10 corresponding cam follower 18 and guide pads 17, cam follower 18 1 ends drive with cam 10; But an end is connected with the swan-neck period of the day from 11 p.m. to 1 a.m and puts on the application of force roller 16 of the rotation on the pipe to the active force of cam 10, and described first, second servomotor links to each other with PLC14 respectively.
The acquisition methods of cam design parameter of the present invention:
The girth of getting cam 10 basic circles equals pipe circular arc portion total length, calculates radius of cam base-circle r;
Referring to Fig. 3, obtain a plurality of points to the pipe circular arc portion by length etc., and do the tangent line of curve at its each point place, existing is the drafting of its tangent line of example explanation and the preparation method of other parameter with the b point.
Make b point tangent line; The distance of taking turns 15 center lines with guide pad 17 center lines (being cam follower 18 center lines) as shown in Figure 2 to bend pipe again is a standard; The c point of on the tangent line that b is ordered, being got as shown in Figure 3; Just be equivalent to when the tube bending point reaches the b point, the c point just in time is on the guide pad center line (being the cam follower center line); Make the normal of tangent line after the c point, the sub-circular arc of traffic control is in the d point, and the d point just can think to put on action of cam power the pressure spot of the application of force roller on the pipe.
Measure the distance of c-d, when this distance was exactly crooked b point, the d point was with the amount of movement of application of force roller on the pipe circular arc.
Same quadrat method; Draw and measure a plurality of amount of movements on the crooked pipe circular arc portion with application of force roller; Describe premises data; And simulate that each is the characteristics of motion curve of cam follower with the amount of movement curve of application of force roller on the crooked pipe circular arc portion, and then design required cam.
Cam-type variable curvature tube bending method of the present invention is following:
1) at first, treating that crooked pipe 4 is placed on the initial position of backing plate 5, even the center line of pipe 4 overlaps with two directive wheels, 6 centre position center lines, the end with pipe 4 is positioned on the leading screw pushing mechanism 3 again;
2) then; PLC14 controls first servomotor, 2 drive leading screw pushing mechanisms, 3 promotion pipes 4 and moves ahead between two directive wheels along two directive wheel 6 centre position center lines, and after the displacement of pipe 4 reached beginning bend pipe setting value, promptly the beginning bending point of pipe had run to bend pipe and taken turns 15 places; PLC14 control drives second servomotor, 13 work of reducer of turbodrill 11; Drive main shaft 9 and the rotation of cam 10 constant speed, the linear velocity on cam 10 generating circles is identical with the speed of pipe 4 operations, and cam 10 driving cam driven members 18 slide along guide pad 17; The application of force roller 16 that is connected cam follower 18 ends clamps down on the pipe 4, realizes the bending of pipe;
When driving cam 10 fortune, main shaft 9 circles; Main shaft 9 is out of service with cam 10; Cam follower 18 drives application of force roller 16 and returns to original state with cam 10; Pipe 4 circular arc portions are crooked to be accomplished, and PLC14 controlled and turned back to initial position again, the artificial pipe that takes out after first servomotor 2 drives leading screw pushing mechanism 3 continuation operations one segment distance this moment.
Because the change of design makes pipe curvature that variation take place, need only Design and Machining cam again, change the length of cam follower, write the PLC control program again, repeat aforementioned process during bend pipe again and get final product.
Claims (6)
1. cam-type variable curvature tube bending system; It is characterized in that: comprise platform (1) and be installed in first servomotor (2) on the platform (1); The output of said first servomotor (2) links to each other with the leading screw pushing mechanism (3) that pipe (4) is installed; A side that is positioned at pipe (4) running orbit in platform (1) lower end is equipped with electric machine support (12); The platform of opposite side (1) upper end is equipped with bend pipe wheel (15); Interconnective servomotor (13) and reducer of turbodrill (11) are installed on the described electric machine support (12); The output of reducer of turbodrill (11) is equipped with the main shaft (9) of the central through hole that passes platform (1), on main shaft (9), is set with cam (10), on platform, also is equipped with and corresponding cam follower of cam (10) (18) and guide pad (17); Cam follower (18) one ends drive with cam (10), an end be connected with the swan-neck period of the day from 11 p.m. to 1 a.m cam (10) but active force put on the application of force roller (16) of the rotation on the pipe.
2. cam-type variable curvature tube bending according to claim 1 system is characterized in that: the backing plate (5) that matches with leading screw pushing mechanism (3) also is installed on the described platform.
3. cam-type variable curvature tube bending according to claim 1 system is characterized in that: a pair of directive wheel (6) also is installed on the running route of described pipe (4).
4. cam-type variable curvature tube bending according to claim 1 system, it is characterized in that: described first, second servomotor links to each other with PLC14 respectively.
5. cam-type variable curvature tube bending according to claim 1 system, it is characterized in that: the girth of described cam (10) basic circle equals pipe (4) circular arc portion total length.
6. cam-type variable curvature tube bending method based on the said system of claim 1 is characterized in that:
1) at first, treating that crooked pipe (4) is placed on the initial position of backing plate (5), even the center line of pipe (4) overlaps with two directive wheels (6) centre position center line, the end with pipe (4) is positioned on the leading screw pushing mechanism (3) again;
2) then; PLC14 controls first servomotor (2) drive leading screw pushing mechanism (3) promotion pipe (4), and center line moves ahead between two directive wheels along two directive wheels (6) centre position; After the displacement of pipe (4) reaches beginning bend pipe setting value; Be that the beginning bending point of pipe has run to bend pipe wheel (15) and locates, PLC14 control drives second servomotor (13) work of reducer of turbodrill (11), drives main shaft (9) and rotates with cam (10) constant speed; The speed of the same pipe of linear velocity (4) operation on cam (10) generating circle is identical; Cam (10) driving cam driven member (18) slides along guide pad (17), and the application of force roller (16) that is connected cam follower (18) end clamps down on the pipe (4), realizes the bending of pipe;
When driving cam (10) fortune, main shaft (9) circles; Main shaft (9) and cam (10) are out of service; Cam follower (18) drives application of force roller (16) and returns to original state with cam (10); Pipe (4) circular arc portion is crooked to be accomplished, and PLC14 controlled and turned back to initial position again, the artificial pipe that takes out after first servomotor (2) drives leading screw pushing mechanism (3) continuation operation one segment distance this moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102063928A CN102716953A (en) | 2012-06-21 | 2012-06-21 | Cam type variable-curvature pipe bending system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102063928A CN102716953A (en) | 2012-06-21 | 2012-06-21 | Cam type variable-curvature pipe bending system and method |
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| CN102716953A true CN102716953A (en) | 2012-10-10 |
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| CN2012102063928A Pending CN102716953A (en) | 2012-06-21 | 2012-06-21 | Cam type variable-curvature pipe bending system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057055A (en) * | 2016-07-08 | 2016-10-26 | 山西桐封技工学校 | Pipe bender for teaching experiment |
| CN112893550A (en) * | 2021-01-25 | 2021-06-04 | 浙江大学 | Adjustable mould device that bends of footpath suitable for a mould multitube |
| CN113458208A (en) * | 2021-07-05 | 2021-10-01 | 广州高谱机械科技有限公司 | Bending method and bending mechanism for variable curvature of section bar |
| CN116099916A (en) * | 2023-04-13 | 2023-05-12 | 广东高谱弯曲技术有限公司 | Design method of bending die and use method of bending die |
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| SU1731351A1 (en) * | 1990-01-25 | 1992-05-07 | Экспериментальное Проектно-Конструкторское Бюро "Строймеханизация" | Pipe bending machine |
| TW306040B (en) * | 1995-09-21 | 1997-05-21 | Siemens Ag | |
| CN1210043A (en) * | 1997-08-29 | 1999-03-10 | 利里建筑机械有限公司 | Universal machine for bending pipes or section bars to both fixed and variable curvatures |
| CN1221657A (en) * | 1997-12-31 | 1999-07-07 | 朱学良 | Bending machine able to vary curvature curve |
| CN2372074Y (en) * | 1999-05-07 | 2000-04-05 | 杨幸珠 | Pipe bending machine structure |
| CN2799121Y (en) * | 2004-11-30 | 2006-07-26 | 浙江海亮股份有限公司 | Anti-mosquito incense coil forming machine |
| CN201002113Y (en) * | 2006-12-20 | 2008-01-09 | 中国科学院沈阳自动化研究所 | High-precision curvature measurement and control device |
| CN101180477A (en) * | 2005-04-06 | 2008-05-14 | 株式会社菊池制作所 | Actuator, parallel link mechanism using the same, and long material bending device |
| CN201102043Y (en) * | 2007-08-20 | 2008-08-20 | 王金福 | Electric metallic tube bender |
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2012
- 2012-06-21 CN CN2012102063928A patent/CN102716953A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1731351A1 (en) * | 1990-01-25 | 1992-05-07 | Экспериментальное Проектно-Конструкторское Бюро "Строймеханизация" | Pipe bending machine |
| TW306040B (en) * | 1995-09-21 | 1997-05-21 | Siemens Ag | |
| CN1210043A (en) * | 1997-08-29 | 1999-03-10 | 利里建筑机械有限公司 | Universal machine for bending pipes or section bars to both fixed and variable curvatures |
| CN1221657A (en) * | 1997-12-31 | 1999-07-07 | 朱学良 | Bending machine able to vary curvature curve |
| CN2372074Y (en) * | 1999-05-07 | 2000-04-05 | 杨幸珠 | Pipe bending machine structure |
| CN2799121Y (en) * | 2004-11-30 | 2006-07-26 | 浙江海亮股份有限公司 | Anti-mosquito incense coil forming machine |
| CN101180477A (en) * | 2005-04-06 | 2008-05-14 | 株式会社菊池制作所 | Actuator, parallel link mechanism using the same, and long material bending device |
| CN201002113Y (en) * | 2006-12-20 | 2008-01-09 | 中国科学院沈阳自动化研究所 | High-precision curvature measurement and control device |
| CN201102043Y (en) * | 2007-08-20 | 2008-08-20 | 王金福 | Electric metallic tube bender |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057055A (en) * | 2016-07-08 | 2016-10-26 | 山西桐封技工学校 | Pipe bender for teaching experiment |
| CN112893550A (en) * | 2021-01-25 | 2021-06-04 | 浙江大学 | Adjustable mould device that bends of footpath suitable for a mould multitube |
| CN113458208A (en) * | 2021-07-05 | 2021-10-01 | 广州高谱机械科技有限公司 | Bending method and bending mechanism for variable curvature of section bar |
| CN116099916A (en) * | 2023-04-13 | 2023-05-12 | 广东高谱弯曲技术有限公司 | Design method of bending die and use method of bending die |
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Application publication date: 20121010 |