CN115532907A - A horizontal CNC round bending machine - Google Patents

Abstract

The invention discloses a horizontal numerical control round bending machine. The working roll group includes active working rolls, loading working rolls, unloading working rolls and rebound compensation rollers, active working rolls, loading working rolls, unloading working rolls and rebound compensation rollers There is a working gap between them. The loading work roll and the unloading work roll are respectively arranged on the left and right sides of the driving work roll. Work rolls, second auxiliary work rolls, first auxiliary work rolls, and second auxiliary work rolls are arranged on both sides of the frame, and the positions of loading auxiliary rolls and unloading auxiliary rolls are determined by hydraulic cylinders under the control of the numerical control system. The invention solves the problem that the parts do not meet the precision requirements due to material rebound, solves the problem of repeated replacement of the pressure-applying mold, solves the problems of low replenishment efficiency and high labor intensity of traditional artificial profiles, and greatly improves the processing efficiency.

Description

A horizontal CNC round bending machine

technical field

The invention relates to a round bending machine, in particular to a horizontal numerical control round bending machine.

Background technique

At this stage, according to the processing requirements of different workpieces, such as the weight of the workpiece, the shape to be formed, etc., the vertical round bending machine or the horizontal round bending machine will be selected. The traditional horizontal round bending machine includes three work rolls, two of which are used to form the support surface, and then the remaining one of the work rolls is used to apply pressure to the support surface, so that the profile is bent, but when the work roll moves to the support When the pressure is applied on the surface, the work rolls will vibrate during the movement, and the three work rolls themselves will rotate, but the two work rolls forming the support surface do not limit the profile. Therefore, it is easy to cause the profiles on both sides to bend due to vibration, offset and other factors while bending the circle, resulting in processing errors. Since the traditional horizontal round bending machine has only three work rolls, it is difficult to meet different processing requirements and the work is single.

The round bending machine is a machine capable of bending and rounding thin plates or tubular profiles, including a bracket, a workbench, a numerical control system and a hydraulic pump. The workbench is placed on the bracket, and a cylindrical pressure die and The cylindrical pressure-bearing die is provided with a through hole on the workbench, and the hydraulic pump is provided with a piston rod that moves forward and backward. When in use, after power on, the hydraulic pump pushes the pressure-applying mold to move forward to generate pressure on the profile, thereby realizing the bending of the profile. The disadvantage of the existing round bending machine is that pressure dies of different sizes and specifications need to be used when processing profiles of different shapes, so the pressure dies need to be replaced frequently, thereby reducing production efficiency. Since the roll forming process is a process of elastic-plastic deformation of the material, the springback of the part is an inevitable phenomenon, which is mainly manifested in the restoration of the bending angle and radius of curvature of the part after forming. The springback phenomenon will affect the final shape and dimensional accuracy of the part, causing the part to fail to meet the accuracy requirements.

Domestic research on roll bending forming technology started late, and the same competing products could not reach the level of foreign products. In recent years, many domestic civil aircraft companies have successively introduced foreign high-end profile rolling equipment for production. However, since the core technology of the control system is still in the hands of foreign companies, many aircraft bending parts still cannot be produced independently and need to be imported, which is controlled by others, which seriously affects the development progress of new products.

Contents of the invention

The technical problem to be solved by the present invention is to solve the problem of instability and relatively large errors when the traditional horizontal round bending machine processes profiles, solve the problem that parts do not meet the precision requirements due to material springback, and solve the problem of repeated replacement of pressure-applying molds. problems, and solve the problems of low efficiency and high labor intensity of traditional artificial profiles.

In order to solve the above technical problems, the present invention adopts the following technical means:

A horizontal numerically controlled round bending machine, comprising a frame, a set of work rolls, and a numerical control system. The center of the upper surface of the frame is provided with active work rolls, and the left and right sides of the active work rolls are provided with unloading work rolls and loading work rolls. A pressurized work roll is arranged between the unloaded work roll and the loaded work roll;

The position of the driving work roll is fixed; the loading work roll is set on the right side of the driving work roll, and the right hydraulic rod drives the loading work roll to approach or move away from the driving work roll for position adjustment; the unloading work roll is set on the left side of the driving work roll, The left hydraulic lever drives the unloading work roll to approach or move away from the active work roll for position adjustment; the pressurized work roll is driven by a pressurized servo motor to approach or move away from the active work roll for position adjustment; the unloaded work roll and the loaded work roll are set outside Springback compensation work roll group, the springback compensation work roll group is equipped with a left springback compensation work roll group and a right springback compensation work roll group;

The upper surface of the frame is equipped with active work roll seat, loading work roll support wall plate, unloading work roll support wall plate, active work roll seat is connected with active work roll, loading work roll support wall plate, unloading work roll support wall plate It is arranged in a figure-eight shape, the loading work roll support wall plate and the unloading work roll support wall plate are the installation area of the pressure roller, the loading work roll support wall plate is set on the side of the driving work roll seat, and the loading work roll support wall plate There are two pieces arranged at intervals, and a loading guide rail is provided on the inner wall opposite to the unloading work roll support wall plate set at intervals, and the loading guide rail is used to connect and set the loading work roll; The position on the other side of the symmetry is provided with an unloading work roll support wall plate, and the setting method of the unloading work roll support wall plate is the same as that of the unloading work roll support wall plate; the loading work roll support wall plate, the unloading work roll support wall plate The plate and the active work roll seat are integrally formed;

The right rebound compensation working roll group is provided with a right rebound compensation roller, a right auxiliary rolling fixed support plate, and the right auxiliary rolling fixed support plate is arranged parallel to the upper surface of the frame for rolling support to be processed. For the workpiece, the right side rebound compensation roller is set at the right auxiliary roll bending fixed support plate, the axes of the right side auxiliary roll bend fixed support plate and the right rebound compensation roller are set vertically, and the right rebound compensation roller is set on the right auxiliary Right above the fixed support plate for roll bending, the right rebound compensation roller presses against the workpiece to prevent its rebound deformation; the structure and working principle of the left rebound compensation working roll group and the right rebound compensation roller working roll group are the same .

The advantages of the present invention are:

First: The curved working gap can be changed by loading, unloading and pressing work rolls, so as to meet different processing needs and process different shapes.

Second: The correcting force of the pressurized work roll to prevent the springback of the processed workpiece, increase the plastic deformation of the deformation zone, change the stress distribution state, thereby reducing the springback, improving the processing accuracy of the parts, and ensuring the processing safety. Improved device stability.

Third: By setting the right rebound compensation roller, the right auxiliary bending fixed support plate, the right rebound compensation roller and the right auxiliary bending fixed support plate work together to support and limit the workpiece being processed. Profile springback deformation; the structure and working principle of the left springback compensation work roll group and the right springback compensation roll work roll group are the same.

Fourth: The active work roll seat on the upper surface of the frame, the loading work roll support wall plate, and the unloading work roll support wall plate are integrally formed to make the connection and fixation of the active work roll, active work roll and pressurized work roll more stable. Reduce the deviation of the position change of the split connection setting parts due to the environmental influences such as temperature, which is convenient for improving the machining accuracy in the working state, and also facilitates the adjustment of the relative position.

As preferably, the further technical scheme of the present invention is:

The loading work roll is arranged on the collar, and the collar is installed on the loading guide rail. The loading work roll is connected with the right hydraulic rod through the collar, and the right hydraulic rod drives the loading work roll to move closer to or away from the active drive along the loading guide rail. Work rolls, for position adjustment; unloading work roll setting mode and loading work rolls.

The collar is set to ensure the stability of the processing work, and the two driven work rolls, the loading work roll and the unloading work roll, move along the guide rail and are limited by the guide rail to improve the adjustment accuracy.

The right rebound compensation roller and the right auxiliary bending fixed support plate are all installed on the right auxiliary rolling slider; the right auxiliary rolling servo motor drives the right auxiliary rolling ball screw, and the right auxiliary bending The rolling ball screw drives the right auxiliary rolling slider, and the right auxiliary rolling slider drives the right rebound compensation roller, and the right auxiliary rolling fixed support plate moves to change the position; the right rebound compensation roller working roll group Set on the support shaft, the right auxiliary roll-bending hydraulic rod drives the support shaft to rotate, the rotation of the support shaft drives the right rebound compensation roller, and the right auxiliary roll-bending fixed support plate rotates to adjust the position with the support shaft rotation.

The rebound compensation roller and the right auxiliary bending fixed support plate are set on the slider, and the position can be adjusted along the right auxiliary bending ball screw by driving the slider; at the same time, the right rebound compensation roller working roll group is set on the On the support shaft, when the support shaft rotates, the rebound compensation roller rotates to adjust the position along with the rotation of the support shaft. To meet the needs of different profiles and different processing angles, the work will be in different positions. When adjusting the position, the circle where the rebound compensation roller is located is adjusted to be in tangential contact with the workpiece to be processed.

The frame is also provided with a torsion device, the torsion device is provided with a torsion motor, a shaft coupling, a block, a worm, and a worm wheel; There are twisting holes between the clamping blocks, and the workpiece to be processed is limited by the clamping blocks after being inserted into the twisting holes.

When the torsion device is working, when the material passes through the entrance of the torsion device, the block will lock the material, then the torsion motor starts, the worm rotates under the drive of the coupling, and at the same time the worm wheel is driven by the worm to rotate, the material is in the block and Torsion deformation occurs under the action of the worm gear. The above arrangement enables the present invention not only to have a bending function, but also to have a twisting function.

The torsion device is also provided with a torsion box and a torsion end cover, the worm and the worm gear are arranged in the torsion box, one side of the torsion box is provided with a torsion end cover, and the torsion end cover is connected with a fixed torsion motor.

By setting the twisting box body and the twisting end cover, it is convenient to connect and set the twisting motor.

The torsion device is arranged on the left rolling slider. The twisting device is installed on the left rolling slider, and the movement mode of the left rolling slider is the same as that of the right rolling slider. The twisting device can move with the movement of the left rolling slider, thereby Changing the working position, this linkage provides a more comprehensive processing method for the torsion device.

Set the twisting device directly above the chassis, reducing the setting of supporting parts.

The pressurized work roll is arranged on the support collar, which is hingedly connected with the support shaft of the pressurized work roll, and the pressurized servo motor can drive the support sleeve to rotate around the support shaft of the pressurized work roll to drive the pressurized work roll Close to or away from the driving work roll, the pressure work roll support shaft is installed inside the frame.

Through the above settings, the pressure work roll can be adjusted along the pressure work roll by the pressure servo motor to approach or move away from the active work roll; it can also assist in adjusting its position through rotation to better meet the working requirements. need.

The lead screw passes through the slider and is installed on the guide rail to realize the movement of the auxiliary rolling mechanism along the guide rail. The rollers on the springback compensation rolling mechanism can rotate freely on the material processing plane, and the profile can be adjusted according to the rebound tendency of the profile after bending. Secondary strengthened bending, so as to adapt to the processing of various material shapes to meet various work needs, greatly improving the usability of the device.

Description of drawings

Fig. 1 is an exploded view of a specific embodiment of the present invention.

Fig. 2 is an exploded view of a specific embodiment of the present invention.

Fig. 3 is an exploded view of a specific embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a specific embodiment of the present invention.

Fig. 5 is the structural representation of a kind of specific embodiment of the present invention

Fig. 6 is a perspective view of a specific embodiment of the present invention.

Explanation of reference signs: 1-active work roll; 2-unloading work roll; 3-pressurization work roll; 4-loading work roll; 5-pressurization servo motor; 6-loading guide rail; block; 8-right rebound compensation roller; 9-right auxiliary roll bending sleeve; 10-right rebound compensation work roll group; 11-drive roller servo motor; 12-drive roller sleeve; 13-support sleeve Ring; 14 - left rebound compensation roller; 15 - left auxiliary roll bending slider; 16 - right auxiliary roll bending guide rail; 17 - right auxiliary roll bending fixed support plate; 18 - left auxiliary roll bending fixed support plate; 19 - left auxiliary roll bending guide rail; 20 - left rebound compensation work roll group; 21 - right auxiliary roll bending hydraulic rod; 22 - left auxiliary roll bending hydraulic rod; 23 - right servo motor, 24 - left servo motor; 25 - right auxiliary bending servo motor, 26 - right auxiliary rolling ball screw; 27 - left auxiliary rolling ball screw; 28 - left rolling servo motor, 29 - box Body shell, 30-hanging screw, 31-rack cooling plate, 32-support base; 33-torsion motor, 34-coupling, 35-torsion end cover, 36-torsion box, 37-block, 38- Worm screw, 39-worm gears form.

detailed description

Below in conjunction with embodiment, further illustrate the present invention.

Referring to Fig. 1, it can be seen that a horizontal numerical control round bending machine of the present invention includes a frame, a work roll group, and a numerical control system; the center of the upper surface of the frame is provided with an active work roll 1, and the active work roll 1 is driven by a drive roll servo motor 11 Working, unloading work roll 2 and loading work roll 4 are arranged on the left and right sides of active work roll 1, and pressurized work roll 3 is arranged between unloading work roll 2 and loading work roll 4; the position of active work roll 1 is selected on the upper surface of the frame At the center, the driving roll sleeve 12 on which the driving work roll 1 is installed is locked by a bolt, so that the position of the driving roll sleeve cannot be moved, and the driving work roll 1 rotates to work.

The loading work roll 4 is set on the right side of the driving work roll 1, the loading work roll 4 is set on the collar, the collar is installed on the loading guide rail 6, the loading work roll 4 is connected with the right servo motor 23 through the collar, and the right side The servo motor 23 drives the loading work roll 4 to move close to or away from the driving work roll 1 along the loading guide rail 6 for position adjustment.

The unloading work roll 2 is set on the left side of the active work roll 1, and the unloading work roll 2 is set on the collar, which is installed on the unloading guide rail. The unloading work roll 2 is connected with the left servo motor 24 through the collar, and the left servo The motor 24 drives the unloading work roll 2 to move close to or away from the driving work roll 1 along the unloading guide rail for position adjustment.

The pressure work roll 3 is arranged on the support collar 13, and the support collar 13 is hingedly connected with the support shaft of the pressure work roll. The pressurization servo motor 5 can drive the support collar 13 to rotate around the support shaft of the press work roll to drive the pressure work roll. The pressure work roll 3 is close to or far away from the driving work roll 1, and the support shaft of the pressure work roll is installed inside the frame.

The upper surface of the rack is equipped with active work roll seat, loading work roll support wall, unloading work roll support wall, active work roll seat is connected with active work roll 1, loading work roll support wall, unloading work roll support wall The plate is arranged in a figure-eight shape, the loading work roll support wall plate and the unloading work roll support wall plate are the pressure roll installation area, the loading work roll support wall plate is set on the side of the driving work roll seat, and the loading work roll support wall There are two plates arranged at intervals, and a loading guide rail 6 is provided on the inner side wall opposite to the unloading work roll support wall plate arranged at intervals, and the loading guide rail 6 is used to connect and set the loading work roll 4; An unloading work roll support wall is provided at the opposite side of the work roll support wall, and the unloading work roll support wall is set in the same way as the unloading work roll support wall; The unloading work roll supporting wall plate and the active work roll seat are integrally formed and set.

The right rebound compensation roller 8 and the right side auxiliary roll bending fixed support plate 17 arranged on the right side rebound compensation working roll group 10 are installed on the right side rebound compensation roller 8 and the right side auxiliary roll bend fixed support plate 17. On the side auxiliary roll bending slider 7; the right auxiliary roll bending servo motor 25 drives the right auxiliary roll bending ball screw 26, and the right auxiliary roll bending ball screw 26 drives the right auxiliary roll bending slider 7, and the right auxiliary roll bending The roll bending slider 7 drives the right rebound compensation roller 8, and the right auxiliary roll bending fixed support plate 17 moves to change positions; Drive the support shaft to rotate, the top of the support shaft is connected to the frame through the right auxiliary rolling sleeve 9, the rotation of the support shaft drives the right rebound compensation roller 8, and the right auxiliary rolling fixed support plate 17 rotates with the rotation of the support shaft Adjust the position. To meet the needs of different profiles and different processing angles, the work will be in different positions. When adjusting the position, the circle where the contact point of the rebound compensation roller 8 on the right is adjusted to be in tangential contact with the workpiece to be processed.

The left side rebound compensation work roll group 20 is provided with a left side rebound compensation roller 14, a left side auxiliary roll bending slider 15, a left side auxiliary roll bend fixed support plate 18, a left side auxiliary roll bend guide rail 19, a left side auxiliary roll bend Bending hydraulic rod 22, left side auxiliary rolling ball screw 27 and left side rolling servo motor 28. The structure and working principle of the left springback compensation work roll group 20 and the right springback compensation work roll group 10 are the same.

The side wall plate of the box shell 29 is a frame cooling plate 31, which is provided with cooling holes for heat dissipation; the box shell 29 is provided with two eyebolts 30 arranged at intervals, which is convenient for connection and fixing. A support base 32 is provided on the bottom surface of the box shell 29 , and the support base 32 supports the box shell 29 .

A torsion device is installed above the left side rolling slider 15, and the torsion device is made up of a torsion motor 33, a shaft coupling 34, a torsion end cover 35, a torsion casing 36, a block 37, a worm screw 38, and a worm wheel 39; The worm 38 is driven by the coupling 34, and the worm 38 drives the worm wheel 39 to rotate. The center of the worm wheel 39 is provided with a block 37, and a twist hole is arranged between the blocks 37. Limiting, worm 38, worm wheel 39 are arranged in the twist box 36, one side of the twist box 36 is provided with a twist end cover 35, and the twist end cover 35 is connected with a fixed twist motor 33.

The twisting device is installed on the left rolling slider 15, and the movement mode of the left rolling slider 15 is the same as that of the right rolling slider 7. The twisting device can move along with the left rolling slider 15 And movement, thereby changing the working position, such linkage provides a more comprehensive processing method for the torsion device.

The working principle and working process of this device are as follows:

When the horizontal CNC round bending machine is working, it is necessary to input relevant codes on the interface of the CNC system, and after the action simulation is confirmed to be correct, start the round bending machine, place the materials to be processed on the workbench, and place it on the table with the auxiliary fixture. In the working gap formed by driving work roll 1, unloading work roll 2, loading work roll 4 and pressing work roll 3. During processing, the terminal control of the numerical control system is used to control the feed rate of the left servo motor 24, the right servo motor 23 and the lower pressure servo motor 5 to adjust the working gap in the fourth roll forming mechanism, and the active work roll 1 rotates Drive the feeding of the material, so as to automatically complete the preliminary processing of the profile. Due to the springback characteristics of the material, the springback compensation of the profile is particularly important. Since the mechanisms on the left and right sides are the same and the adjustment methods are the same, take the adjustment of the mechanism on the right side as an example. The numerical control system controls the servo motor 25 to control the right auxiliary rolling slider 7 to move along the right auxiliary rolling guide rail 16 and the entire auxiliary rolling device can be driven around its center by the right auxiliary rolling power output device 9 Axis rotation. In this way, the position of the right rebound compensation roller 8 can be adjusted according to requirements, so that the right rebound compensation roller 8 can complete the rebound compensation for the profile at the correct position.

When the torsion device is working, when the material passes through the entrance of the torsion device, the block 37 will lock the material, then the torsion motor 33 starts, the worm 38 rotates under the drive of the coupling 34, and at the same time the worm wheel 39 is driven by the worm to rotate, The material will be twisted and deformed under the action of the block 37 and the worm wheel 39 . The above configuration makes this embodiment not only have the bending function, but also have the twisting function.

Claims (7)

1. A horizontal numerical control round bending machine, comprising a frame, a work roll group, and a numerical control system, is characterized in that: The center of the upper surface of the frame is provided with an active work roll (1), and the left and right sides of the active work roll (1) are provided with an unloading work roll (2) and a loading work roll (4), and the unloading work roll (2) and the loading A pressurized work roll (3) is arranged in the middle of the work roll (4); The position of the driving work roll (1) is fixed; the loading work roll (4) is set on the right side of the driving work roll (1), and the right hydraulic lever (23) drives the loading work roll (4) to approach or move away from the driving work roll ( 1), adjust the position; the unloading work roll (2) is set on the left side of the driving work roll (1), and the left servo motor (24) drives the unloading work roll (2) close to or away from the driving work roll (1), and the position Adjustment; the pressurized work roll (3) is driven by the pressurized servo motor (5) to approach or move away from the active work roll (1) for position adjustment; the outside of the unloaded work roll (2) and the loaded work roll (4) is set to rebound Compensation work roll group, the springback compensation work roll group is equipped with a left springback compensation work roll group and a right rebound compensation work roll group; The upper surface of the frame is equipped with active work roll seat, loading work roll support wall plate, unloading work roll support wall plate, active work roll seat is connected with active work roll (1), loading work roll support wall plate, unloading work roll support wall plate The supporting wall boards are arranged in a figure-eight shape, and the area between the supporting wall boards for loading work rolls and unloading work rolls is the installation area for pressure rollers. There are two support wall plates and they are set at intervals. The two sets of unloading work rolls are provided with a loading guide rail (6) on the opposite inner wall of the support wall plate. The loading guide rail (6) is used to connect and set the loading work roll (4) ;The work table (1) is provided with an unloading work roll support wall plate at the opposite side to the loading work roll support wall plate, the setting of the unloading work roll support wall plate is the same as the setting of the unloading work roll support wall plate The method is the same; the loading work roll support wallboard, the unloading work roll support wallboard, and the active work roll seat are integrally formed; The right rebound compensation working roll set is provided with a right rebound compensation roller (8), a right auxiliary rolling fixed support plate (17), and a right side auxiliary rolling fixed support plate (17) is provided with a right The rebound compensation roller (8), the right auxiliary rolling fixed support plate (17), and the axis of the right rebound compensation roller (8) are set vertically, and the right rebound compensation roller (8) is set on the right auxiliary bending Immediately above the fixed support plate (17), the right springback compensation roller (8) presses against the processed workpiece to prevent its springback deformation; the structure of the left springback compensation work roll group and the right springback compensation roll work roll group and works on the same principle. 2. The horizontal CNC round bending machine according to claim 1, characterized in that: the loading work roll (4) is set on the collar, the collar is installed on the loading guide rail (6), and the loading work roll ( 4) Connect with the right servo motor (23) through the collar, and the right servo motor (23) drives the loading work roll (4) to move along the loading guide rail (6) to approach or move away from the active work roll (1) for position adjustment ; The setting method of unloading work roll (2) is the same as that of loading work roll (4). 3. The horizontal CNC round bending machine according to claim 1, characterized in that: the right side springback compensating roller (8) and the right auxiliary rolling fixed support plate (17) are installed on the right side auxiliary On the roller bending slider (7); the right auxiliary roller bending servo motor (25) drives the right auxiliary roller bending ball screw (26), and the right auxiliary roller bending ball screw (26) drives the right auxiliary roller bending slider block (7), the right auxiliary roll bending slider (7) drives the right rebound compensation roller (8), and the right auxiliary roll bend fixed support plate (17) moves to change position; the right rebound compensation roller working roll group Set on the support shaft, the right auxiliary roll bending hydraulic rod (21) drives the support shaft to rotate, and the rotation of the support shaft drives the right rebound compensation roller (8), and the right auxiliary roll bending fixed support plate (17) follows the support shaft Rotate to adjust position. 4. The horizontal CNC round bending machine according to claim 1, characterized in that: the frame is also equipped with a twisting device, the twisting device is equipped with a twisting motor (33), a coupling (34), a card Block (37), worm (38), worm gear (39); rotating motor (33) drives worm (38) through shaft coupling (34), and worm (38) drives worm gear (39) to rotate, and the center of worm gear (39) Blocks (37) are provided, twist holes are arranged between the blocks (37), and the workpiece to be processed is limited by the blocks (37) after being inserted in the twist holes. 5. The horizontal CNC round bending machine according to claim 4, characterized in that: the twisting device is also provided with a twisting box (36), a twisting end cover (35), a worm (38), a worm wheel (39 ) is arranged in the twisting box (36), one side of the twisting box (36) is provided with a twisting end cover (35), and the twisting end cover (35) is connected with a fixed twisting motor (33). 6. The horizontal CNC round bending machine according to claim 4, characterized in that: the twisting device is arranged on the left side rolling slider (15). 7. The horizontal CNC round bending machine according to claim 1, characterized in that: the pressurized work roll (3) is set on the supporting collar (13), and the supporting collar (13) and the pressurized The support shaft of the work roll is hingedly connected, and the pressurized servo motor (5) drives the support collar (13) to rotate around the support shaft of the pressurized work roll, driving the pressurized work roll (3) to move closer to or away from the active work roll (1). The press work roll support shaft is installed inside the frame.

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