CN110369570A - The bending device and its bending technique of accurate arc tube - Google Patents

The bending device and its bending technique of accurate arc tube Download PDF

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Publication number
CN110369570A
CN110369570A CN201910741971.4A CN201910741971A CN110369570A CN 110369570 A CN110369570 A CN 110369570A CN 201910741971 A CN201910741971 A CN 201910741971A CN 110369570 A CN110369570 A CN 110369570A
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China
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tube body
arc
tube
hard
steering engine
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CN201910741971.4A
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CN110369570B (en
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杭涛
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Boxing Rongzhi Technology Innovation Development Co., Ltd
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杭涛
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/02Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/16Auxiliary equipment, e.g. for heating or cooling of bends

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a kind of bending devices of accurate arc tube to be fixedly installed with center steering engine on the equipment platform including horizontal equipment platform;The casing side of the center steering engine is fixedly connected with the tube body bending seat of fan shape, the fan-shaped center of circle of the tube body bending seat of fan shape and the concentric setting of steering engine output shaft of the center steering engine;Structure of the invention is simple, will can also carry out the moulding of outer surface and inner surface after straight tube bending to bend pipe in time, improve the circularity of bend pipe and the flatness of tube wall;Hard guide sphere along the counter clockwise direction in the pipe inner arc channel of arc tube be slowly displaced during to play the role of shaping to the inner wall of arc tube smooth;Tube body constrained port is moved to during the end clockwise of tube body curved guide groove that play the role of shaping to the outer wall of arc tube smooth clockwise along tube body curved guide groove.

Description

The bending device and its bending technique of accurate arc tube
Technical field
The invention belongs to tube body bending process fields.
Background technique
Since certain deformation has occurred after curved pipe bending, there may be parts for the outer surface of tube body and inner surface Local dent and out-of-flatness outstanding and the not high phenomenon of circularity influence precision and quality after tube body bending;Therefore it needs A kind of a kind of mechanism for correcting moulding in time in bending process.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of precision of energy moulding in time The bending device and its bending technique of arc tube.
Technical solution: to achieve the above object, the bending device of accurate arc tube of the invention is flat including horizontal equipment Platform is fixedly installed with center steering engine on the equipment platform;The casing side of the center steering engine is fixedly connected with fan shape Tube body bends seat, and the fan-shaped center of circle of tube body bending seat of fan shape and the steering engine output shaft of the center steering engine concentric are set It sets;Tube body curved guide groove, the tube body curved guide are provided in the outer end cambered surface of the tube body bending seat of fan shape Groove extends along the crooked radian of tube body bending seat outer end cambered surface, and the cross section profile of the tube body curved guide groove is semicircle Shape, the two sides of the tube body curved guide groove are arc rolls limit;It further include columnar tube body rolling wheel, the tube body rolling Wheel periphery middle height is provided with rolling groove, and the two sides of the rolling groove are annular rolling surface, the rolling groove Cross section profile semicircular in shape;The two annular rolling surfaces are rolled with the two arc rolls limits respectively to be connected;The rolling groove The position handed over the tube body curved guide groove forms circular tube body constrained port;Concentric rotation on the tube body rolling wheel It is provided with rolling wheel shaft, further includes power arm, the both ends of the power arm are respectively fixedly connected with the steering engine output shaft and rolling Wheel shaft;The center steering engine drives the arcuately rolls limit rolling of the annular rolling surface on the tube body rolling wheel by the power arm It is dynamic.
Further, the casing of the center steering engine is provided with arc-shaped rack far from the side of tube body bending seat and leads Rail, the concentric setting of steering engine output shaft in the arc center of circle of the arc-shaped rack guide rail and the center steering engine;The arc-shaped gear Guide rail is fixedly connected by several guide supportings with the casing of the center steering engine;Edge in the outside cambered surface of the guide supporting Arc-shaped guide rail direction, which is extended, arc guide barrel;Sliding is provided with arc-shaped rack, the arc-shaped rack in the arc guide barrel Extrados on arc direction array is provided with several denticles, the intrados of the arc-shaped rack and the arc guide barrel slide Connection;It is provided with linear guide on the equipment platform, is provided with linear guide groove in the linear guide, further includes horizontal Linear gear rack, the lower end of the linear gear rack are slidably arranged in the linear guide groove, and the linear gear rack can be along described The sliding of linear guide groove length direction;Denticle on denticle array and the arc-shaped rack extrados on the linear gear rack Engagement;The linear motion of the linear gear rack can drive the arc-shaped rack along the axis of the steering engine output shaft of the center steering engine Rotation;The arc-shaped rack has hard to guide sphere along the anticlockwise one end integrated setting of axis;The hard guidance The centre of sphere of sphere is located on the arc center line of the arc tube in the tube body curved guide groove, and the hard guides sphere Diameter it is identical as the internal diameter of arc tube in the tube body curved guide groove;Horizontal liquid is installed on the equipment platform Push rod device is pressed, the hydraulic push rod extension line of the hydraulic push rod device and the length extension line of the linear gear rack are conllinear, institute The hydraulic push rod end for stating hydraulic push rod device is fixedly connected with the end of the linear gear rack.
Further, the end clockwise of the tube body bending seat has been fixedly arranged at the upper side baffle ring seat, and the tube body bending is drawn The end clockwise of guide groove is provided with arc tube baffle ring, and the internal diameter of the arc tube baffle ring is greater than the circular arc bore, and circle The internal diameter of arc pipe baffle ring is less than the circular arc pipe outside diameter;The arc tube baffle ring is fixedly connected with the tube body by fixed column and bends Seat;
It is also equipped with vertical gear shaft on the equipment platform, is rotatably equipped with first by bearing on the gear shaft Gear, the first gear are engaged with the denticle on the arc-shaped rack;Vertical power-assisted is also equipped on the equipment platform Motor;Be connected with second gear on the output shaft of the assist motor, the second gear also with the tooth on the arc-shaped rack Body engagement;
The second hydraulic push rod device is also fixedly installed on the equipment platform, second hydraulic push rod device is located at institute The anticlockwise side of tube body bending seat is stated, the second hydraulic push rod end of second hydraulic push rod device is fixedly connected There is limited block, hard hemisphere is fixedly connected on the limited block, the hard hemisphere and second hydraulic push rod fill Concentric setting is set, the hemispheroidal diameter of hard is identical as the hard guidance diameter of sphere;
In the state of when tube body rolling wheel is rolled to the end counterclockwise of tube body bending seat, hard guidance sphere with it is described Tube body constrained port is concentric.
Further, the bending technique of the bending device of accurate arc tube, includes the following steps:
Step 1, under original state, hard guidance sphere is located at the end clockwise of tube body curved guide groove, and tube body Arcuately rolls limit is rolled to the end counterclockwise of tube body bending seat rolling wheel, and the position of tube body rolling wheel is maintained by power arm It sets, hard guidance sphere and tube body constrained port are in concentric state at this time;Then the second hydraulic push rod device is controlled, hard is made Hemisphere is gradually distance from tube body constrained port, until the distance between hard hemisphere and tube body constrained port are greater than straight tube to be bent, Then then the concentric set in one end of straight tube to be bent is controlled the second hydraulic push rod device, make hard on hard hemisphere Hemisphere moves closer to tube body constrained port, until will be in the just concentric insertion tube body constrained port of the other end of straight tube to be bent; The tooling process of straight tube to be bent is completed at this time;
Step 2 controls hydraulic push rod device, the rudder for making linear gear rack drive the arc-shaped rack along the center steering engine The rotation counterclockwise of machine output shaft, until hard guidance sphere is moved to the end counterclockwise of tube body curved guide groove against needle;This When hard guidance sphere be just inserted in nozzle of the straight tube to be bent far from hard hemisphere one end;
Step 3 controls the second hydraulic push rod device, so that limited block is slowly pushed straight tube to be bent along axis, and then to be curved Right and wrong pipe starts to gradually pass through tube body constrained port far from the hemispheroidal one end of hard, controls hydraulic push rod device at the same time, makes Linear gear rack drives arc-shaped rack slowly to rotate clockwise along the steering engine output shaft of the center steering engine, and then guides hard Sphere is slowly displaced along the clockwise direction of tube body curved guide groove, keeps hard guidance sphere separate in straight tube to be bent always In the nozzle of the hemispheroidal one end of hard;The straight tube to be bent of tube body constrained port is gradually passed through in the clockwise of hard guidance sphere Bend loss is bent to clockwise under guidance, as limited block continues slowly to push straight tube to be bent along axis, and then makes bend pipe Section is slowly fed along the clockwise direction of tube body curved guide groove, is advanced into and is passed completely through until straight tube to be bent is limited block Tube body constrained port, hard hemisphere is located just at the end counterclockwise of tube body curved guide groove at this time, and hard guides sphere just Positioned at the end clockwise of tube body curved guide groove;Straight tube to be bent is tentatively bent to complete arc tube at this time;This step Hard guidance sphere guidance bending process in although complete arc tube has been integrally formed, the outer wall of arc tube at this time Can there are part local dent and out-of-flatness outstanding and the not high phenomenon of circularity with inner wall;
Step 4 starts center steering engine at this time, and then center steering engine drives tube body rolling wheel arcuately to roll by power arm Flanging rolls clockwise, until tube body rolling wheel is rolled to the end counterclockwise of tube body bending seat, since tube body rolls in the above process The change in location of pinch roller makes tube body constrained port be moved to the suitable of tube body curved guide groove clockwise along tube body curved guide groove Hour hands end;And tube body constrained port is the rigid hole covered on arc tube always, thus tube body constrained port is along tube body curved guide ditch Slot be moved to clockwise tube body curved guide groove it is clockwise end during the smooth work of shaping is played to the outer wall of arc tube With;Then the state at the end of control centre's steering engine drives tube body rolling wheel backtracking to step 3 by power arm;
Step 5 controls hydraulic push rod device, and linear gear rack is made to drive arc-shaped rack defeated along the steering engine of the center steering engine Shaft slowly rotates counterclockwise, and then keeps hard guidance sphere slow along the counter clockwise direction in the pipe inner arc channel of arc tube Displacement, and then hard guidance sphere is made to cover the pipe inner arc channel of entire arc tube, then control hard guidance sphere again Backtracking, is restored to the state at the end of step 4, and hard guides sphere along the counterclockwise of the pipe inner arc channel of arc tube It is smooth that shaping is played the role of to the inner wall of arc tube during being slowly displaced in direction;
Step 6, the second hydraulic push rod device of control retract, and hard hemisphere is detached from the end counterclockwise of arc tube, makes circular arc Pipe releases the state positioned;Then the arc tube being flattened is dismantled.
The utility model has the advantages that structure of the invention is simple, outer surface and Nei Biao will can also be carried out to bend pipe in time after straight tube bending The moulding in face improves the circularity of bend pipe and the flatness of tube wall;Hard guides sphere along the inverse of the pipe inner arc channel of arc tube It is smooth that clockwise plays the role of shaping to the inner wall of arc tube during being slowly displaced;Tube body constrained port draws along tube body bending It is flat that guide groove plays shaping to the outer wall of arc tube during being moved to the end clockwise of tube body curved guide groove clockwise Whole effect.
Detailed description of the invention
Attached drawing 1 is by straight tube bending to be bent into the equipment overall top view after arc tube;
Attached drawing 2 is side view when being fitted without work status in the equipment;
Attached drawing 3 is the running part schematic diagram of the equipment;
Attached drawing 4 is that arc-shaped rack dismantles schematic diagram;
Attached drawing 5 is arc-shaped rack structural schematic diagram;
Schematic diagram when one original state of the step of attached drawing 6 is the bending technique of the equipment;
The step of attached drawing 7 is the bending technique of the equipment two terminates schematic diagram when state;
Schematic diagram during the step of attached drawing 8 is the bending technique of the equipment three;
Top view at the end of the step of attached drawing 9 is the bending technique of the equipment three;
Away top view at the end of the step of attached drawing 10 is the bending technique of the equipment three;
Stereoscopic schematic diagram at the end of the step of attached drawing 11 is the bending technique of the equipment three;
Schematic diagram during the step of attached drawing 12 is the bending technique of the equipment four;
Schematic diagram during the step of attached drawing 13 is the bending technique of the equipment four.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
The bending device of precision arc tube as shown in attached drawing 1 to 13, including horizontal equipment platform 7, the equipment is flat Center steering engine 6 is fixedly installed on platform 7;The casing side of the center steering engine 6 is fixedly connected with the tube body bending seat of fan shape 23, the tube body of fan shape bends the fan-shaped center of circle of seat 23 and the concentric setting of steering engine output shaft 25 of the center steering engine 6; Tube body curved guide groove 27, the tube body curved guide are provided in the outer end cambered surface of the tube body bending seat 23 of fan shape Groove 27 extends along the crooked radian of tube body bending 23 outer end cambered surface of seat, and the cross section profile of the tube body curved guide groove 27 is Semicircle, the two sides of the tube body curved guide groove 27 are arc rolls limit 28;It further include columnar tube body rolling wheel 5, institute It states 5 periphery middle height of tube body rolling wheel and is provided with rolling groove 30, the two sides of the rolling groove 30 are annular rolling Face 29, the 30 cross section profile semicircular in shape of rolling groove;The two annular rolling surfaces 29 respectively with the two arc rolls limits 28 roll connection;The position that the rolling groove 30 and the tube body curved guide groove 27 are handed over forms circular tube body constrained port 35;Concentric rotation is provided with rolling wheel shaft 31 on the tube body rolling wheel 5, further includes power arm 4, and the two of the power arm 4 End is respectively fixedly connected with the steering engine output shaft 25 and rolling wheel shaft 31;The center steering engine 6 drives institute by the power arm 4 Stating the annular rolling surface 29 on tube body rolling wheel 5, arcuately rolls limit 28 rolls.
The casing of the center steering engine 6 is provided with arc-shaped rack guide rail 11, institute far from the side of tube body bending seat 23 State the arc center of circle of arc-shaped rack guide rail 11 and the concentric setting of steering engine output shaft 25 of the center steering engine 6;The arc-shaped gear Guide rail 11 is fixedly connected by several guide supportings 10 with the casing of the center steering engine 6;The outside of the guide supporting 10 Arcuately guide rail direction is extended in cambered surface arc guide barrel 26;Sliding is provided with arc-shaped rack 8 in the arc guide barrel 26, Arc direction array is provided with several denticles 9 on the extrados of the arc-shaped rack 8, the intrados of the arc-shaped rack 8 with The arc guide barrel 26 is slidably connected;It is provided with linear guide 15 on the equipment platform 7, is provided in the linear guide 15 Linear guide groove 18, further includes horizontal linear gear rack 14, and the lower end of the linear gear rack 14 is slidably arranged in the straight line and leads In track slot 18, and the linear gear rack 14 can be slided along 18 length direction of linear guide groove;On the linear gear rack 14 Denticle array 37 on 8 extrados of arc-shaped rack on denticle 9 engage;The linear motion of the linear gear rack 14 can drive The arc-shaped rack 8 is rotated along the axis of the steering engine output shaft 25 of the center steering engine 6;The arc-shaped rack 8 is along the axis inverse time One end integrated setting in needle direction has hard to guide sphere 24;It is curved that the centre of sphere of the hard guidance sphere 24 is located at the tube body On the arc center line of arc tube 22 in bent guiding groove 27, and the diameter of hard guidance sphere 24 and the tube body are curved The internal diameter of arc tube 22 in bent guiding groove 27 is identical;Horizontal hydraulic push rod device 17 is installed on the equipment platform 7, 16 extension line of hydraulic push rod of the hydraulic push rod device 17 is conllinear with the length extension line of the linear gear rack 14, described hydraulic 16 end of hydraulic push rod of push rod device 17 is fixedly connected with the end of the linear gear rack 14.
The end clockwise of the tube body bending seat 23 has been fixedly arranged at the upper side baffle ring seat 33, the tube body curved guide groove 27 end clockwise is provided with arc tube baffle ring 32, and the internal diameter of the arc tube baffle ring 32 is greater than 22 internal diameter of arc tube, and The internal diameter of arc tube baffle ring 32 is less than 22 outer diameter of arc tube;The arc tube baffle ring 32 is fixedly connected with institute by fixed column 34 State tube body bending seat 23;
It is also equipped with vertical gear shaft 41 on the equipment platform 7, is rotatablely installed on the gear shaft 41 by bearing There is first gear 13, the first gear 13 is engaged with the denticle 9 on the arc-shaped rack 8;It is also installed on the equipment platform 7 There is vertical assist motor 40;Second gear 12, the second gear 12 are connected on the output shaft of the assist motor 40 It is engaged with the denticle 9 on the arc-shaped rack 8;
The second hydraulic push rod device 1, second hydraulic push rod device 1 are also fixedly installed on the equipment platform 7 In the anticlockwise side of tube body bending seat 23,2 end of the second hydraulic push rod of second hydraulic push rod device 1 It is fixedly connected with limited block 20, hard hemisphere 21, the hard hemisphere 21 and institute are fixedly connected on the limited block 20 The concentric setting of the second hydraulic push rod device 1 is stated, diameter and the hard of the hard hemisphere 21 guide the straight of sphere 24 Diameter is identical;
In the state that tube body rolling wheel 5 rolls when bending the end counterclockwise of seat 23 to tube body, the hard guides sphere 24 It is concentric with the tube body constrained port 35.
Using the present apparatus to the bending technique of accurate arc tube, include the following steps:
Step 1, under original state, hard guidance sphere 24 is located at the end clockwise of tube body curved guide groove 27, and Arcuately rolls limit 28 is rolled to the end counterclockwise of tube body bending seat 23 tube body rolling wheel 5, and maintains tube body by power arm 4 The position of rolling wheel 5, hard guidance sphere 24 and tube body constrained port 35 are in concentric state at this time;Then control second is hydraulic Push rod device 1 makes hard hemisphere 21 be gradually distance from tube body constrained port 35, until hard hemisphere 21 and tube body constrained port 35 it Between distance be greater than straight tube 22.1 to be bent, then by the concentric set in one end of straight tube 22.1 to be bent in hard hemisphere 21 On, the second hydraulic push rod device 1 is then controlled, hard hemisphere 21 is made to move closer to tube body constrained port 35, until will be to be bent In the just concentric insertion tube body constrained port 35 of the other end of straight tube 22.1;The tooling mistake of straight tube 22.1 to be bent is completed at this time Journey;
Step 2 controls hydraulic push rod device 17, linear gear rack 14 is made to drive the arc-shaped rack 8 along the center steering engine The rotation counterclockwise of 6 steering engine output shaft 25, until hard guidance sphere 24 is moved to tube body curved guide groove 27 against needle End counterclockwise;The sphere 24 of hard guidance at this time is just inserted in nozzle of the straight tube 22.1 far from 21 one end of hard hemisphere to be bent In;
Step 3 controls the second hydraulic push rod device 1, and limited block 20 is made slowly to push straight tube 22.1 to be bent along axis, And then straight tube 22.1 to be bent starts to gradually pass through tube body constrained port 35 far from one end of hard hemisphere 21, controls at the same time Hydraulic push rod device 17 makes linear gear rack 14 drive arc-shaped rack 8 slowly suitable along the steering engine output shaft 25 of the center steering engine 6 Hour hands rotation, and then it is displaced hard guidance sphere 24 slowly along the clockwise direction of tube body curved guide groove 27, make hard Guide sphere 24 always in the nozzle of the one end of straight tube 22.1 far from hard hemisphere 21 to be bent;Gradually pass through tube body constraint The straight tube to be bent 22.1 in hole 35 is bent to bend loss 22.1 under the guidance clockwise of hard guidance sphere 24 clockwise, with Limited block 20 continue slowly to push straight tube 22.1 to be bent along axis, and then make bend loss 22.1 along tube body curved guide groove 27 clockwise direction is slowly fed, until straight tube 22.1 to be bent is limited block and is advanced into and passes completely through tube body constrained port 35, Hard hemisphere 21 is located just at the end counterclockwise of tube body curved guide groove 27 at this time, and hard guidance sphere 24 is located just at pipe The end clockwise of body curved guide groove 27;Straight tube 22.1 to be bent is tentatively bent to complete arc tube 22 at this time;This step Although complete arc tube has been integrally formed in the guidance bending process of rapid hard guidance sphere 24, arc tube at this time Outer wall and inner wall can have part local dent and out-of-flatness outstanding and the not high phenomenon of circularity;
Step 4 starts center steering engine 6 at this time, and then center steering engine 6 drives tube body rolling wheel 5 along arc by power arm 4 Shape rolls limit 28 rolls clockwise, until tube body rolling wheel 5 is rolled to the end counterclockwise of tube body bending seat 23, in the above process by In the change in location of tube body rolling wheel 5, tube body constrained port 35 is set along tube body curved guide groove 27 to be moved to tube body clockwise curved The end clockwise of bent guiding groove 27;And tube body constrained port 35 is the rigid hole covered on arc tube 22 always, thus tube body is about Beam hole 35 along tube body curved guide groove 27 be moved to clockwise tube body curved guide groove 27 it is clockwise end during it is right It is smooth that the outer wall of arc tube 22 plays the role of shaping;Then control centre's steering engine 6 drives tube body rolling wheel 5 former by power arm 4 Road returns to the state at the end of step 3;
Step 5 controls hydraulic push rod device 17, and linear gear rack 14 is made to drive arc-shaped rack 8 along the center steering engine 6 The slowly rotation counterclockwise of steering engine output shaft 25, and then make hard guidance sphere 24 along the pipe inner arc channel 43 of arc tube 22 Counterclockwise slowly displacement, and then the pipe inner arc channel 43 for making hard that sphere 24 be guided to cover entire arc tube 22, then Hard guidance sphere 24 backtracking again is controlled, is restored to the state at the end of step 4, hard guides sphere 24 along circular arc It is smooth that the counter clockwise direction in the pipe inner arc channel 43 of pipe 22 plays shaping to the inner wall of arc tube 22 during being slowly displaced Effect;
Step 6, the second hydraulic push rod device 1 of control retract, and hard hemisphere 21 is detached from the end counterclockwise of arc tube 22, Arc tube 22 is set to release the state positioned;Then the arc tube 22 being flattened is dismantled.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (4)

1. the bending device of accurate arc tube, it is characterised in that: including horizontal equipment platform (7), on the equipment platform (7) It is fixedly installed with center steering engine (6);The casing side of the center steering engine (6) is fixedly connected with the tube body bending seat of fan shape (23), the fan-shaped center of circle of tube body bending seat (23) of fan shape and the steering engine output shaft (25) of the center steering engine (6) are same Axle center setting;Tube body curved guide groove (27), institute are provided in the outer end cambered surface of tube body bending seat (23) of fan shape The crooked radian that tube body curved guide groove (27) is stated along tube body bending seat (23) outer end cambered surface extends, the tube body curved guide The cross section profile of groove (27) is semicircle, and the two sides of the tube body curved guide groove (27) are arc rolls limit (28);Also Including columnar tube body rolling wheel (5), tube body rolling wheel (5) periphery middle height is provided with rolling groove (30), institute The two sides for stating rolling groove (30) are annular rolling surface (29), rolling groove (30) the cross section profile semicircular in shape;Two institutes It states annular rolling surface (29) and rolls connection with the two arc rolls limits (28) respectively;The rolling groove (30) and the tube body The position that curved guide groove (27) is handed over forms circular tube body constrained port (35);Upper concentric turn of the tube body rolling wheel (5) It is dynamic to be provided with rolling wheel shaft (31), it further include power arm (4), the both ends of the power arm (4) are respectively fixedly connected with the steering engine Output shaft (25) and rolling wheel shaft (31);The center steering engine (6) drives the tube body rolling wheel by the power arm (4) (5) arcuately rolls limit (28) rolls the annular rolling surface (29) on.
2. the bending device of precision arc tube according to claim 1, it is characterised in that: the machine of the center steering engine (6) Shell is provided with arc-shaped rack guide rail (11) far from the side of tube body bending seat (23), the arc of the arc-shaped rack guide rail (11) Steering engine output shaft (25) the concentric setting in the shape center of circle and the center steering engine (6);The arc-shaped rack guide rail (11) is if pass through Dry guide supporting (10) are fixedly connected with the casing of the center steering engine (6);Edge in the outside cambered surface of the guide supporting (10) Arc-shaped guide rail direction, which is extended, arc guide barrel (26);Sliding is provided with arc-shaped rack (8), institute in the arc guide barrel (26) It states and is provided with several denticles (9) on the extrados of arc-shaped rack (8) along arc direction array, the inner arc of the arc-shaped rack (8) Face is slidably connected with the arc guide barrel (26);Linear guide (15), the linear guide are provided on the equipment platform (7) (15) it is provided with linear guide groove (18) on, further includes horizontal linear gear rack (14), the lower end of the linear gear rack (14) is sliding Dynamic setting is in the linear guide groove (18), and the linear gear rack (14) can be along the linear guide groove (18) length direction Sliding;Denticle array (37) on the linear gear rack (14) on the arc-shaped rack (8) extrados on denticle (9) nibble It closes;The linear motion of the linear gear rack (14) can drive the arc-shaped rack (8) to export along the steering engine of the center steering engine (6) The axis of axis (25) rotates;The arc-shaped rack (8) has hard to guide ball along the anticlockwise one end integrated setting of axis Body (24);The centre of sphere of hard guidance sphere (24) is located at the arc tube (22) in the tube body curved guide groove (27) On arc center line, and the diameter of hard guidance sphere (24) and the arc tube in the tube body curved guide groove (27) (22) internal diameter is identical;Horizontal hydraulic push rod device (17), the hydraulic push rod device are installed on the equipment platform (7) (17) hydraulic push rod (16) extension line is conllinear with the length extension line of the linear gear rack (14), the hydraulic push rod device (17) hydraulic push rod (16) end is fixedly connected with the end of the linear gear rack (14).
3. the bending device of precision arc tube according to claim 2, it is characterised in that: tube body bending seat (23) End has been fixedly arranged at the upper side baffle ring seat (33) clockwise, and the end clockwise of the tube body curved guide groove (27) is provided with circular arc Pipe baffle ring (32), the internal diameter of the arc tube baffle ring (32) are greater than the arc tube (22) internal diameter, and arc tube baffle ring (32) Internal diameter is less than the arc tube (22) outer diameter;To be fixedly connected with the tube body curved by fixed column (34) for the arc tube baffle ring (32) Folding seat (23);
It is also equipped with vertical gear shaft (41) on the equipment platform (7), is rotated and pacified by bearing on the gear shaft (41) Equipped with first gear (13), the first gear (13) is engaged with the denticle (9) on the arc-shaped rack (8);The equipment is flat Vertical assist motor (40) are also equipped on platform (7);Second gear is connected on the output shaft of the assist motor (40) (12), the second gear (12) is also engaged with the denticle (9) on the arc-shaped rack (8);
It is also fixedly installed with the second hydraulic push rod device (1) on the equipment platform (7), second hydraulic push rod device (1) Positioned at the anticlockwise side of tube body bending seat (23), the second hydraulic thrust of second hydraulic push rod device (1) Bar (2) end is fixedly connected with limited block (20), is fixedly connected with hard hemisphere (21) on the limited block (20), described hard Matter hemisphere (21) and the concentric setting of second hydraulic push rod device (1), the diameter of the hard hemisphere (21) and institute The diameter for stating hard guidance sphere (24) is identical;
In the state that tube body rolling wheel (5) rolls when bending the end counterclockwise of seat (23) to tube body, the hard guides sphere (24) concentric with the tube body constrained port (35).
4. the bending technique of the bending device of precision arc tube according to claim 3, it is characterised in that: including walking as follows It is rapid:
Step 1, under original state, hard guidance sphere (24) is located at the end clockwise of tube body curved guide groove (27), and Arcuately rolls limit (28) is rolled to the end counterclockwise of tube body bending seat (23) tube body rolling wheel (5), and passes through power arm (4) The position of tube body rolling wheel (5) is maintained, hard guidance at this time sphere (24) and tube body constrained port (35) is in concentric state;So After control the second hydraulic push rod device (1), so that hard hemisphere (21) is gradually distance from tube body constrained port (35), until hard hemisphere The distance between body (21) and tube body constrained port (35) are greater than straight tube to be bent (22.1), then by straight tube to be bent (22.1) The concentric set in one end then controls the second hydraulic push rod device (1) on hard hemisphere (21), make hard hemisphere (21) by Gradually close to tube body constrained port (35), until by the just concentric insertion tube body constrained port of the other end of straight tube to be bent (22.1) (35) in;The tooling process of straight tube to be bent (22.1) is completed at this time;
Step 2 controls hydraulic push rod device (17), and linear gear rack (14) is made to drive the arc-shaped rack (8) along the center rudder The rotation counterclockwise of the steering engine output shaft (25) of machine (6), until the inverse needle of hard guidance sphere (24) is moved to tube body curved guide The end counterclockwise of groove (27);Hard guidance sphere (24) at this time is just inserted in straight tube to be bent (22.1) far from hard hemisphere (21) in the nozzle of one end;
Step 3 controls the second hydraulic push rod device (1), and limited block (20) is made slowly to push straight tube to be bent along axis (22.1), and then straight tube to be bent (22.1) starts to gradually pass through tube body constrained port far from the one end of hard hemisphere (21) (35), hydraulic push rod device (17) are controlled at the same time, linear gear rack (14) is made to drive arc-shaped rack (8) along the center steering engine (6) steering engine output shaft (25) slowly rotates clockwise, and then makes hard guidance sphere (24) along tube body curved guide groove (27) clockwise direction is slowly displaced, and makes hard guidance sphere (24) always in straight tube to be bent (22.1) far from hard hemisphere In the nozzle of one end of body (21);The straight tube to be bent (22.1) for gradually passing through tube body constrained port (35) guides sphere in hard (24) bend loss (22.1) are bent to clockwise under guidance clockwise, are slowly pushed along axis as limited block (20) continue Straight tube (22.1) to be bent, so make bend loss (22.1) along tube body curved guide groove (27) clockwise direction slowly into It gives, until straight tube to be bent (22.1) are limited block and are advanced into and pass completely through tube body constrained port (35), hard hemisphere at this time (21) it is located just at the end counterclockwise of tube body curved guide groove (27), hard guidance sphere (24) is located just at tube body bending and draws The end clockwise of guide groove (27);Straight tube (22.1) to be bent is tentatively bent to complete arc tube (22) at this time;This step Hard guidance sphere (24) although guidance bending process in complete arc tube has been integrally formed, arc tube at this time Outer wall and inner wall can have part local dent and out-of-flatness outstanding and the not high phenomenon of circularity;
Step 4 starts center steering engine (6) at this time, and then center steering engine (6) drives tube body rolling wheel (5) by power arm (4) Arcuately rolls limit (28) rolls clockwise, until tube body rolling wheel (5) are rolled to the end counterclockwise of tube body bending seat (23), on Due to the change in location of tube body rolling wheel (5) during stating, keep tube body constrained port (35) suitable along tube body curved guide groove (27) Hour hands are moved to the end clockwise of tube body curved guide groove (27);And tube body constrained port (35) is covered in arc tube (22) always On rigid hole, thus tube body constrained port (35) is moved to tube body curved guide ditch clockwise along tube body curved guide groove (27) It is smooth to play the role of shaping to the outer wall of arc tube (22) during the end clockwise of slot (27);Then control centre's steering engine (6) state at the end of driving tube body rolling wheel (5) backtracking to step 3 by power arm (4);
Step 5 controls hydraulic push rod device (17), and linear gear rack (14) is made to drive arc-shaped rack (8) along the center steering engine (6) the slowly rotation counterclockwise of steering engine output shaft (25), and then make hard guidance sphere (24) along the pipe of arc tube (22) The counter clockwise direction of curved channel (43) is slowly displaced, and then the pipe for making hard that sphere (24) be guided to cover entire arc tube (22) Inner arc channel (43) then controls hard guidance sphere (24) backtracking again, is restored to the state at the end of step 4, Hard guide sphere (24) along the counter clockwise direction in the pipe inner arc channel (43) of arc tube (22) be slowly displaced during it is right It is smooth that the inner wall of arc tube (22) plays the role of shaping;
Step 6, control the second hydraulic push rod device (1) retract, and hard hemisphere (21) is detached from the counterclockwise of arc tube (22) End makes arc tube (22) to release the state positioned;Then the arc tube (22) being flattened is dismantled.
CN201910741971.4A 2019-08-13 2019-08-13 Bending equipment and bending process of precise arc tube Active CN110369570B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111496032A (en) * 2020-05-22 2020-08-07 杭涛 Pipe bending forming equipment and bending process
CN111496031A (en) * 2020-05-22 2020-08-07 杭涛 U-shaped pipe bending forming mechanism and bending process
CN111842574A (en) * 2020-07-23 2020-10-30 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton

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RU2006101262A (en) * 2006-01-16 2007-07-27 ООО "НПФ "Инстан" (RU) PIPE BENDING DEVICE (OPTIONS)
US20170341120A1 (en) * 2016-05-31 2017-11-30 Hubbell Incorporated Helical bending device
CN208195299U (en) * 2017-10-11 2018-12-07 郑捷宇 bending device
CN209109897U (en) * 2018-10-23 2019-07-16 安徽杰航不锈钢装饰工程有限公司 A kind of highly-safe stainless steel tube apparatus for bending
CN209206150U (en) * 2018-11-22 2019-08-06 广州市机电安装有限公司 A kind of New Type Bending Pipe Unit

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Publication number Priority date Publication date Assignee Title
RU2006101262A (en) * 2006-01-16 2007-07-27 ООО "НПФ "Инстан" (RU) PIPE BENDING DEVICE (OPTIONS)
US20170341120A1 (en) * 2016-05-31 2017-11-30 Hubbell Incorporated Helical bending device
CN208195299U (en) * 2017-10-11 2018-12-07 郑捷宇 bending device
CN209109897U (en) * 2018-10-23 2019-07-16 安徽杰航不锈钢装饰工程有限公司 A kind of highly-safe stainless steel tube apparatus for bending
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111496032A (en) * 2020-05-22 2020-08-07 杭涛 Pipe bending forming equipment and bending process
CN111496031A (en) * 2020-05-22 2020-08-07 杭涛 U-shaped pipe bending forming mechanism and bending process
CN111842574A (en) * 2020-07-23 2020-10-30 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton
CN111842574B (en) * 2020-07-23 2022-04-22 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton

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