Multi-mode adaptive CNC pipe bending machine and pipe bending process thereof

Abstract

The invention discloses a multi-mode adaptive CNC pipe bending machine and a pipe bending process thereof, and relates to the technical field of CNC pipe bending machines, the multi-mode adaptive CNC pipe bending machine comprises an adaptive mechanism and a pipe bending mechanism, the adaptive mechanism is fixedly mounted at the top of the pipe bending mechanism, the adaptive mechanism comprises a flat plate and a second concave block, and an L-shaped frame is fixedly mounted at the top of the flat plate. According to the scheme, when steel pipes with different pipe diameters are subjected to bending operation, two first air cylinders are started, under the action of two strip-shaped grooves and two strip-shaped sliding blocks, the moving stability of a trapezoidal plate is guaranteed, and under the action of a first concave block, a rotating shaft, a downward pressing column, a second concave block, a downward pressing head, two limiting rods and two limiting rings, the trapezoidal plate can be stably pressed; when the limiting clamping plate moves towards one side, the lower pressing head can be driven to move downwards, under the action of the limiting clamping plate, the first strip-shaped plate and the lower pressing head, steel pipes with different pipe diameters can be positioned on the flat plate, the adaptability is high, multi-face positioning is completed, the bending efficiency of the pipe bending machine is improved, and the qualification rate of the pipe bending machine is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of CNC pipe bender, in particular to a multi-mode adaptive CNC pipe bender and pipe bending process thereof. BACKGROUND

[0002] Pipe bender is a device specially used for bending metal pipes (such as steel pipes, copper pipes, aluminum pipes, etc.) according to the preset angle and shape, and CNC pipe bender means that the operation, movement and function of the machine are controlled by computer program, which can realize high automation, repeat precision and complex curve bending, and reduce human error. In the pipe bending process, the specific operation method, technical parameter, processing flow and quality control means matched with the CNC pipe bender, and including material clamping and positioning, bending parameter setting, anti-wrinkle and anti-flat technology, springback compensation and lubrication and cooling, etc.

[0003] In the prior art, when the CNC pipe bender is used to bend the steel pipe at different angles, the other end of the steel pipe needs to be positioned. However, when batch pipe bending operation is carried out in the workshop, different pipe diameters of steel pipes may occur. The full-range wrapping positioning assembly needs to be replaced adaptively according to the size of the pipe diameter of the steel pipe, which reduces the efficiency of the steel pipe bending. Then, the ordinary positioning assembly cannot effectively position the steel pipes with different pipe diameters, which reduces the qualified rate of subsequent steel pipe bending.

[0004] Therefore, we propose a multi-mode adaptive CNC pipe bender and pipe bending process to solve the problems mentioned above. SUMMARY

[0005] The present application aims to provide a multi-mode adaptive CNC pipe bender and pipe bending process to solve the problem of replacing the full-range wrapping positioning assembly adaptively according to the size of the pipe diameter of the steel pipe, which reduces the efficiency of the pipe bending machine for bending the steel pipe.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a multi-mode adaptive CNC pipe bender and pipe bending process, comprising an adaptive mechanism and a pipe bending mechanism, the top of the pipe bending mechanism is fixedly installed with the adaptive mechanism;

[0007] The adapting mechanism comprises a flat plate, an L-shaped frame fixedly installed on the top of the flat plate, two first air cylinders fixedly installed on one side of the outer wall of the L-shaped frame, a trapezoidal plate fixedly installed between the output ends of the two first air cylinders, a limiting clamping plate fixedly installed on the outer wall of the trapezoidal plate close to the bottom side, a first recessed block fixedly installed on one side of the outer wall of the trapezoidal plate close to the top side, a rotating shaft fixedly installed between the inner surface walls of the first recessed block, a lower pressing column rotatably connected to the outer surface wall of the rotating shaft, a supporting shaft fixedly installed between the inner surface walls of the second recessed block, and the lower pressing column rotatably connected to the outer surface wall of the supporting shaft at one end close to the second recessed block, and a lower pressing head fixedly installed on the bottom of the second recessed block.

[0008] Preferably, two strip-shaped grooves are formed in the top of the flat plate, and strip-shaped sliding blocks are movably embedded in the inner surface walls of the two strip-shaped grooves, and the top of each of the two strip-shaped sliding blocks is fixedly connected with the bottom of the limiting clamping plate.

[0009] Preferably, a first strip-shaped plate is fixedly installed on the top of the flat plate, two limiting rods are fixedly installed on the top of the lower pressing head, the outer surface walls of the two limiting rods are movably inserted into the interior of the L-shaped frame, and limiting rings are fixedly sleeved on the outer surface walls of the two limiting rods.

[0010] Preferably, the bending pipe mechanism comprises an operating table and a rotating table assembly, a control end is fixedly installed on one side of the outer wall of the operating table, and a driving motor is fixedly installed on the top of the operating table.

[0011] Preferably, a threaded rod is fixedly installed on one side of the outer wall of the driving motor, a moving plate is threadedly connected to the outer surface wall of the threaded rod, the bottom of the flat plate is fixedly connected with the top of the moving plate, a strip-shaped column is fixedly installed on the top of the operating table, and one end of the threaded rod away from the driving motor is movably inserted into the interior of the strip-shaped column.

[0012] Preferably, two guide rods are fixedly installed on one side of the outer wall of the strip-shaped column, the inner surface walls of the moving plate are movably sleeved on the outer surface walls of the two guide rods, two limiting plates are fixedly installed on the top of the operating table, and the outer walls of the two guide rods on one side are fixedly connected with the outer walls of the two limiting plates on the opposite side.

[0013] Preferably, a moving column is threadedly connected to the outer surface wall of the threaded rod, an auxiliary plate is fixedly installed on the top of the moving column, a rectangular column is fixedly installed on the top of the auxiliary plate, and an electric push rod is fixedly installed on one side of the outer wall of the rectangular column.

[0014] Preferably, an auxiliary clamping plate is fixedly installed on the output end of the electric push rod, a second strip-shaped plate is fixedly installed on the top of the auxiliary plate, and a second air cylinder is fixedly installed on the top of the rotating table assembly.

[0015] Preferably, the output end of the second cylinder is fixedly installed with a table plate, the top of the table plate is fixedly installed with a limiting elbow column, the top of the table plate is fixedly installed with a vertical plate, the outer wall of the vertical plate is fixedly installed with four third cylinders, and the output ends of the four third cylinders are fixedly installed with an auxiliary elbow column.

[0016] A pipe bending process of a multi-mode adapted CNC pipe bender, comprising the following steps:

[0017] S1, when the steel pipe material needs to be bent, it is first placed on the flat plate and closely abuts against the first strip plate, and then the steel pipe material is limited in multiple directions between the first strip plate, the limiting clamping plate and the lower pressing head through the action of the two first cylinders, the trapezoidal plate, the limiting clamping plate, the first concave block, the rotating shaft, the lower pressing column, the supporting shaft, the second concave block, the lower pressing head, the two strip grooves, the two strip sliders, the control end, the two limiting rods and the two limiting rings.

[0018] S2, when the longer steel pipe material needs to be bent, the steel pipe material is placed on the flat plate and the auxiliary plate and closely abuts against the first strip plate and the second strip plate, and after the preliminary multidirectional limiting is completed, the end of the steel pipe material is limited between the auxiliary clamping plate and the second strip plate through the action of the control end, the rectangular column, the electric push rod and the auxiliary clamping plate.

[0019] S3, then according to the size of the steel pipe material, the appropriate circular groove on the limiting elbow column and the auxiliary elbow column is selected, and the limiting elbow column and the auxiliary elbow column are moved to the appropriate height through the action of the control end, the second cylinder and the table plate, and then the front end of the steel pipe material is fixed between the limiting elbow column and the auxiliary elbow column through the action of the vertical plate and the four third cylinders.

[0020] S4, then the limiting elbow column, the auxiliary elbow column and the fixed steel pipe material are rotated through the action of the control end and the rotating table assembly, and at the same time, the movement of the steel pipe material is synchronized through the action of the control end, the driving motor, the threaded rod, the moving plate, the strip column, the two guide rods, the two limiting plates and the strip column, so that the bending operation of the front end of the steel pipe material is completed.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] 1、When the steel pipes of different diameters are subjected to bending operation, the two first air cylinders are started, and under the action of the two strip-shaped grooves and the two strip-shaped sliders, the stability of the movement of the ladder-shaped plate and the limiting clamping plate is ensured, and then under the action of the first concave block, the rotating shaft, the pressing column, the second concave block, the pressing head and the two limiting rods and the two limiting rings, the limiting clamping plate moves to one side, and at the same time, the pressing head is also driven to move downward, and under the action of the limiting clamping plate, the first strip-shaped plate and the pressing head, the steel pipes of different diameters can be positioned on the flat plate, the adaptability is high, the positioning of multiple surfaces is completed, and the bending efficiency and the qualified rate of the pipe bender are improved.

[0023] 2、When the long steel pipe is subjected to bending operation, under the action of the auxiliary plate, the rectangular column, the electric push rod and the auxiliary clamping plate and the second strip-shaped plate, the other end of the steel pipe can be assisted and limited, so that the bending operation of the front end of the steel pipe is not affected by the length, and when the end of the steel pipe to be bent is located between the limiting pipe bending column and the auxiliary pipe bending column, under the action of the control end, the rotating table assembly, the driving motor, the threaded rod, the moving plate and the two guide rods, the bending operation of the steel pipe can be completed, the automation is high, the bending operation of steel pipes of different lengths can be carried out, and the use effect of the CNC pipe bender is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0025] Figure 2 It is a side view of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0026] Figure 3 It is a schematic view of an adaptive mechanism of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0027] Figure 4 It is a side view of an adaptive mechanism of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0028] Figure 5 It is a partially expanded view of an adaptive mechanism of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0029] Figure 6 It is a schematic view of a pipe bending mechanism of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application;

[0030] Figure 7 It is a partially expanded view of a pipe bending mechanism of a multi-mode adaptive CNC pipe bender and its pipe bending process of the application.

[0031] In the drawings:

[0032] 1,Adapting mechanism; 101,Flat plate; 102,L-shaped frame; 103,First air cylinder; 104,Trapezoidal plate; 105,Limiting clamping plate; 106,First concave block; 107,Shaft; 108,Pressing column; 109,Support shaft; 110,Second concave block; 111,Pressing head; 112,Strip-shaped groove; 113,Strip-shaped slider; 114,First strip-shaped plate; 115,Limiting rod; 116,Limiting ring; 2,Bending pipe mechanism; 201,Operation table; 202,Control end; 203,Driving motor; 204,Screw rod; 205,Moving plate; 206,Strip-shaped column; 207,Guide rod; 208,Limiting plate; 209,Moving column; 210,Auxiliary plate; 211,Rectangular column; 212,Electric push rod; 213,Auxiliary clamping plate; 214,Second strip-shaped plate; 215,Rotary table assembly; 216,Second air cylinder; 217,Support table plate; 218,Limiting bending pipe column; 219,Upright plate; 220,Third air cylinder; 221,Auxiliary bending pipe column. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-7 The present application provides a technical solution: a multi-mode adapting CNC pipe bender and a pipe bending process thereof, comprising an adapting mechanism 1 and a pipe bending mechanism 2, the pipe bending mechanism 2 is fixedly installed at the top of the adapting mechanism 1.

[0035] The adapting mechanism 1 comprises a flat plate 101 and a second concave block 110, the top of the flat plate 101 is fixedly installed with an L-shaped frame 102, two first air cylinders 103 are fixedly installed on one side of the outer wall of the L-shaped frame 102, a trapezoidal plate 104 is fixedly installed between the output ends of the two first air cylinders 103, a limiting clamping plate 105 is fixedly installed on one side of the outer wall of the trapezoidal plate 104 close to the bottom, a first concave block 106 is fixedly installed on one side of the outer wall of the trapezoidal plate 104 close to the top, a shaft 107 is fixedly installed between the inner surface walls of the first concave block 106, a pressing column 108 is rotatably connected to the outer surface wall of the shaft 107, a support shaft 109 is fixedly installed between the inner surface walls of the second concave block 110, and one end of the pressing column 108 close to the second concave block 110 is rotatably connected to the outer surface wall of the support shaft 109, and a pressing head 111 is fixedly installed at the bottom of the second concave block 110.

[0036] As Figures 1-5As shown, the top of the flat plate 101 is provided with two strip-shaped grooves 112, the inner walls of which are movably embedded with strip-shaped sliders 113, and the top of each of the two strip-shaped sliders 113 is fixedly connected with the bottom of the limiting clamp plate 105. Through the action of the two strip-shaped grooves 112 and the two strip-shaped sliders 113, the stability of the movement of the limiting clamp plate 105 driven by the trapezoidal plate 104 is improved.

[0037] As shown in Figures 1-5 , the top of the flat plate 101 is fixedly installed with a first strip-shaped plate 114, the top of the pressing head 111 is fixedly installed with two limiting rods 115, the outer walls of which are movably inserted into the interior of the L-shaped frame 102, the outer walls of the two limiting rods 115 are fixedly sleeved with limiting rings 116, the two limiting rods 115 can move up and down in the L-shaped frame 102, and under the action of the two limiting rings 116, it can be ensured that the two limiting rods 115 will not be separated from the L-shaped frame 105, and the pressing head 111 can move vertically downward.

[0038] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the bending pipe mechanism 2 comprises an operating table 201 and a rotating table assembly 215, the outer wall of the operating table 201 is fixedly installed with a control end 202, the top of the operating table 201 is fixedly installed with a driving motor 203, and the coordinated work of the driving motor 203, the first cylinder 103, the electric push rod 212, the second cylinder 216 and the third cylinder 220 can be accurately controlled through the control end 202.

[0039] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 , the outer wall of the driving motor 203 is fixedly installed with a threaded rod 204, the outer wall of the threaded rod 204 is threadedly connected with a moving plate 205, the bottom of the flat plate 101 is fixedly connected with the top of the moving plate 205, the top of the operating table 201 is fixedly installed with a strip-shaped column 206, and the end of the threaded rod 204 away from the driving motor 203 is movably inserted into the interior of the strip-shaped column 206. By starting the driving motor 203 through the control end 202, the threaded rod 204 is driven to rotate in the interior of the strip-shaped column 206, and in combination with the action of the two guide rods 207, the back and forth movement of the moving plate 205 and the flat plate 101 can be realized, which can cooperate with the subsequent bending operation.

[0040] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the outer wall of the strip-shaped column 206 is fixedly provided with two guide rods 207, and the inner wall of the moving plate 205 is movably sleeved on the outer wall of the two guide rods 207. The top of the operation table 201 is fixedly provided with two limiting plates 208, and the outer wall of each of the two guide rods 207 is fixedly connected to the opposite side of the outer wall of each of the two limiting plates 208.

[0041] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the outer wall of the threaded rod 204 is threadedly connected with a moving column 209, the top of the moving column 209 is fixedly provided with an auxiliary plate 210, the top of the auxiliary plate 210 is fixedly provided with a rectangular column 211, the outer wall of the rectangular column 211 is fixedly provided with an electric push rod 212, the moving column 209 is movably sleeved on the two guide rods 207, and the moving column 209 can move synchronously with the moving plate 205.

[0042] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the output end of the electric push rod 212 is fixedly provided with an auxiliary clamping plate 213, the top of the auxiliary plate 210 is fixedly provided with a second strip-shaped plate 214, the top of a rotating table assembly 215 is fixedly provided with a second air cylinder 216. By starting the electric push rod 212 through the control end 202, the auxiliary clamping plate 213 is moved to one side, so that the other end of the steel pipe material is limited, which plays a role of auxiliary limiting and helps to improve the qualified rate of subsequent bending operation of the steel pipe material.

[0043] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 Figure 1 Figure 2 Figure 6 Figure 7 Figure 1 Figure 2 Figure 6 Figure 7 , the output end of the second air cylinder 216 is fixedly provided with a supporting table plate 217, the top of the supporting table plate 217 is fixedly provided with a limiting bent pipe column 218, the top of the supporting table plate 217 is fixedly provided with a vertical plate 219, the outer wall of the vertical plate 219 is fixedly provided with four third air cylinders 220, the output ends of the four third air cylinders 220 are fixedly provided with an auxiliary bent pipe column 221. By starting the second air cylinder 216 through the control end 202, the supporting table plate 217, the limiting bent pipe column 218 and the auxiliary bent pipe column 221 are moved to a suitable height, and then the four third air cylinders are started through the control end 202, so that the front end of the steel pipe material is located between the limiting bent pipe column 218 and the auxiliary bent pipe column 221, and the corresponding bending operation is completed.

[0044] The working principle and method of using the device: first, the steel pipe to be bent is placed on the auxiliary plate 210 and the flat plate 101, and is in close contact with the first strip plate 114 and the second strip plate 214, then the two first air cylinders 103 installed on one side of the L-shaped frame 102 are started at the same time through the control end 202, under the action of the two strip grooves 112 and the two strip sliders 113, the limiting clamp plate 105 can be stably moved, at the same time, the trapezoidal plate 104 and the first concave block 106 are also moved to the same side, because the two ends of the pressing column 108 are respectively connected with the rotating shaft 107 in the first concave block 106 and the supporting shaft 109 in the second concave block 110, and the two limiting rods 115 installed on the top of the pressing head 111 are also movably sleeved in the L-shaped frame 102, so that when the trapezoidal plate 104 and the first concave block 106 move to one side, and under the action of the two limiting rods 115, the pressing column 108 can rotate on the rotating shaft 107 and the supporting shaft 109 at the same time, and drive the second concave block 110 and the pressing head 111 to move downward, then cooperate with the limiting clamp plate 105 and the first strip plate 114, so as to realize multi-direction positioning and clamping of the steel pipe, at the same time, the electric push rod 212 installed on one side of the rectangular column 211 is started through the control end 202, so as to drive the auxiliary clamp plate 213 to move to one side and assist in limiting the steel pipe material, at this time, according to the pipe diameter of the steel pipe, the appropriate circular groove on the limiting pipe bending column 218 and the auxiliary pipe bending column 221 is selected, and the second air cylinder 216 installed on the rotating table assembly 215 is started through the control end 202, so as to drive the supporting table plate 217 to move to the appropriate height, and make the front end of the steel pipe located between the limiting pipe bending column 218 and the auxiliary pipe bending column 221, then the driving motor 203 and the rotating table assembly 215 are started at the same time, the rotating table assembly 215 can drive the supporting table plate 217, the limiting pipe bending column 218, the auxiliary pipe bending column 221 and the steel pipe to bend to the originally set side, the bending angle is set in advance, and at this time, the driving motor 203 also drives the threaded rod 204 to rotate in the strip column 206, and under the action of the two guide rods 207, the moving plate 205, the moving column 209 and the limiting clamped steel pipe can be driven to move forward synchronously, so as to complete the bending operation of the steel pipe material, and the steel pipes with different lengths and different pipe diameters can be bent, which has multi-mode adaptability, improves the use effect and practicality of the CNC bending machine.

[0045] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-mode adaptable CNC pipe bending machine, comprising an adapting mechanism (1) and a pipe bending mechanism (2), characterized in that: The top of the bending mechanism (2) is fixedly installed with an adapter (1); The adapter mechanism (1) includes a flat plate (101) and a second concave block (110). An L-shaped frame (102) is fixedly installed on the top of the flat plate (101). Two first cylinders (103) are fixedly installed on one side of the outer wall of the L-shaped frame (102). A trapezoidal plate (104) is fixedly installed between the output ends of the two first cylinders (103). A limit clamp (105) is fixedly installed on the outer wall of the trapezoidal plate (104) near the bottom. A limit clamp (105) is fixedly installed on the outer wall of the trapezoidal plate (104) near the top. A first concave block (106) is fixedly installed on the side. A rotating shaft (107) is fixedly installed between the inner walls of the first concave block (106). A downward pressure column (108) is rotatably connected to the outer wall of the rotating shaft (107). A support shaft (109) is fixedly installed between the inner walls of the second concave block (110). The end of the downward pressure column (108) near the second concave block (110) is rotatably connected to the outer wall of the support shaft (109). A downward pressure head (111) is fixedly installed at the bottom of the second concave block (110).

2. The multi-mode adaptable CNC pipe bending machine according to claim 1, characterized in that: The top of the plate (101) has two strip grooves (112), and the inner surface of the two strip grooves (112) is movably embedded with strip sliders (113), and the top of the two strip sliders (113) is fixedly connected to the bottom of the limiting clamp (105).

3. The multi-mode adaptable CNC pipe bending machine according to claim 2, characterized in that: The top of the flat plate (101) is fixedly installed with a first strip plate (114), and the top of the pressing head (111) is fixedly installed with two limiting rods (115), and the outer walls of the two limiting rods (115) are movably inserted into the interior of the L-shaped frame (102), and the outer walls of the two limiting rods (115) are fixedly fitted with limiting rings (116).

4. The multi-mode adaptable CNC pipe bending machine according to claim 3, characterized in that: The bending mechanism (2) includes an operating table (201) and a rotary table assembly (215). A control end (202) is fixedly installed on one side of the outer wall of the operating table (201), and a drive motor (203) is fixedly installed on the top of the operating table (201).

5. The multi-mode adaptable CNC pipe bending machine according to claim 4, characterized in that: A threaded rod (204) is fixedly installed on one side of the outer wall of the drive motor (203). A movable plate (205) is threadedly connected to the outer wall of the threaded rod (204). The bottom of the plate (101) is fixedly connected to the top of the movable plate (205). A strip column (206) is fixedly installed on the top of the operating table (201). The end of the threaded rod (204) away from the drive motor (203) is movably inserted into the inside of the strip column (206).

6. The multi-mode adaptable CNC pipe bending machine according to claim 5, characterized in that: Two guide rods (207) are fixedly installed on one side of the outer wall of the strip column (206), and the inner surface of the movable plate (205) is movably sleeved on the outer surface of the two guide rods (207). Two limiting plates (208) are fixedly installed on the top of the operating table (201), and the outer walls of the two guide rods (207) are fixedly connected to the opposite side of the outer walls of the two limiting plates (208) on one side of the outer wall.

7. The multi-mode adaptable CNC pipe bending machine according to claim 6, characterized in that: The outer wall of the threaded rod (204) is threadedly connected to a movable column (209). An auxiliary plate (210) is fixedly installed on the top of the movable column (209). A rectangular column (211) is fixedly installed on the top of the auxiliary plate (210). An electric push rod (212) is fixedly installed on one side of the outer wall of the rectangular column (211).

8. The multi-mode adaptable CNC pipe bending machine according to claim 7, characterized in that: An auxiliary clamping plate (213) is fixedly installed at the output end of the electric push rod (212), a second strip plate (214) is fixedly installed on the top of the auxiliary plate (210), and a second cylinder (216) is fixedly installed on the top of the rotary table assembly (215).

9. The multi-mode adaptable CNC pipe bending machine according to claim 8, characterized in that: A support plate (217) is fixedly installed at the output end of the second cylinder (216). A limit bend column (218) is fixedly installed on the top of the support plate (217). A vertical plate (219) is fixedly installed on the top of the support plate (217). Four third cylinders (220) are fixedly installed on one side of the outer wall of the vertical plate (219). An auxiliary bend column (221) is fixedly installed between the output ends of the four third cylinders (220).

10. A pipe bending process for a multi-mode adaptable CNC pipe bending machine, characterized in that: The CNC pipe bending machine with multi-mode adaptation as described in claim 9 includes the following steps: S1. When it is necessary to bend the steel pipe material, first place it on the flat plate (101) and close to the first strip plate (114). Then, through the action of the two first cylinders (103), trapezoidal plate (104), limiting clamp (105), first concave block (106), rotating shaft (107), lower pressure column (108), support shaft (109), second concave block (110), lower pressure head (111), two strip grooves (112), two strip sliders (113), control end (202), two limiting rods (115) and two limiting rings (116), the steel pipe material can be limited in multiple directions between the first strip plate (114), the limiting clamp (105) and the lower pressure head (111). S2. When it is necessary to perform a bending operation on a long steel pipe, the steel pipe can be placed on the flat plate (101) and the auxiliary plate (210), and simultaneously close to the first strip plate (114) and the second strip plate (214). After completing the initial multi-directional limiting, the end of the steel pipe is limited between the auxiliary plate (213) and the second strip plate (214) by the action of the control end (202), the rectangular column (211), the electric push rod (212) and the auxiliary clamping plate (213). S3. Next, according to the size of the steel pipe material, select the appropriate circular grooves on the limiting bend column (218) and the auxiliary bend column (221), and move the limiting bend column (218) and the auxiliary bend column (221) to the appropriate height through the action of the control end (202), the second cylinder (216) and the support plate (217). Then, through the action of the upright plate (219) and the four third cylinders (220), fix the front end of the steel pipe material between the limiting bend column (218) and the auxiliary bend column (221). S4. Then, through the action of the control end (202) and the rotary table assembly (215), the limit bending column (218) and the auxiliary bending column (221) and the fixed steel pipe material are rotated. At the same time, through the action of the control end (202), the drive motor (203), the threaded rod (204), the moving plate (205), the strip column (206), the two guide rods (207), the two limit plates (208) and the strip column (206), the steel pipe material is moved synchronously, thus completing the bending operation of the front end of the steel pipe material.

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