CN113333531A - Bending device for thin-diameter thin-wall metal pipe - Google Patents
Bending device for thin-diameter thin-wall metal pipe Download PDFInfo
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- CN113333531A CN113333531A CN202110626317.6A CN202110626317A CN113333531A CN 113333531 A CN113333531 A CN 113333531A CN 202110626317 A CN202110626317 A CN 202110626317A CN 113333531 A CN113333531 A CN 113333531A
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- bending
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- metal pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a thin-diameter thin-wall metal pipe bending device which comprises a rack, wherein one end of the rack is provided with a clamping mechanism, the other end of the rack is provided with a bending mechanism, the bending mechanism comprises a first motor and a first gear sleeved on the first motor, the first gear is meshed on a second gear, the center of the second gear is provided with a first positioning shaft, the bottom of the first positioning shaft is fixed on a bottom plate, the bottom plate is installed on the rack, the upper end face of the first positioning shaft is fixedly provided with a fixed wheel, a large gear is provided with a second positioning shaft which is not coaxial with the first positioning shaft, the upper end face of the second positioning shaft is fixedly provided with a bending wheel, and a fit clearance for containing a thin-diameter thin-wall metal pipe is reserved between the fixed wheel and the bending wheel. The pipe bending machine bends the pipe into the preset angle through the bending mechanism, has small influence on the deformation of the pipe in the bending process, has smooth transition of the bending part, high automation degree and high processing precision, and can be widely applied to the bending processing of thin-diameter thin-wall metal pipes with different specifications.
Description
Technical Field
The invention belongs to the technical field of bending and processing of thin-diameter thin-wall metal pipes, and particularly relates to a thin-diameter thin-wall metal pipe bending device.
Background
Among many heat transfer elements, the heat dissipation pipe is one of the most effective heat transfer elements known to people, and can transmit a large amount of heat through a small cross section of the heat dissipation pipe in a long distance without external power.
The capillary tube of the heat exchanger of the air conditioner is an important component of the heat exchanger, the integral performance of the air conditioner is directly influenced by the quality of the machining quality of the capillary tube, when the capillary tube is machined in an air conditioner factory, the capillary tube is influenced by factors such as the diameter of a tube in the bending machining process, and the precision is easy to cause various defects such as insufficient precision due to manual bending.
The radiator pipe is generally a thin-diameter thin-wall metal pipe, is bent into different angle shapes according to different purposes, is placed in positions with different shapes, is bent without changing the outer diameter, increases the contact surface area, and can increase the flow speed and direction of cooling oil through the regularly arranged bends, thereby being a good manufacturing method of the radiator pipe. However, the metal pipe bending processing devices used at present are manual devices, and have various defects and shortcomings of complex structure, inflexible operation mode, time consumption, low efficiency, large deformation influence on thin-diameter thin-walled pipes in the processing process, unsuitability for small-scale batch production and the like to different degrees.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a bending device for thin-diameter thin-wall metal pipes, aiming at the defects of the prior art. This bending device passes through clamping mechanism and presss from both sides the one end of waiting the thin footpath thin wall metal tubular product of processing tightly, the other end is sent into the tight pulley and is bent in the fit clearance of taking turns, and it rotates around the tight pulley to bend the wheel through first motor control, realize the operation of bending of thin footpath thin wall metal tubular product, it is little to the tubular product deformation influence in the course of working of bending, the position transition of bending is level and smooth, the machining precision is high, and degree of automation is high, the current metal tubular product processingequipment structure of having effectively solved is complicated, degree of automation is low, the machining precision is low, the defect that the low should not batch production of inefficiency.
In order to solve the technical problems, the invention adopts the technical scheme that: a bending device for thin-diameter thin-wall metal pipes is characterized by comprising a frame, wherein one end of the frame is provided with a clamping mechanism for clamping the thin-diameter thin-wall metal pipes, the other end of the frame is provided with a bending mechanism for bending the thin-diameter thin-wall metal pipe, the bending mechanism comprises a first motor fixedly arranged in the frame and a first gear sleeved on the first motor, the first gear is meshed and connected with a second gear, a first positioning shaft is arranged at the center of the second gear, the bottom of the first positioning shaft is fixed on a bottom plate, the bottom plate is arranged on a frame, a fixed wheel is fixed on the upper end surface of the first positioning shaft, a second positioning shaft is also arranged on the gearwheel, and the second positioning shaft and the first positioning shaft are not coaxial, the second positioning shaft is sleeved with a bending wheel, and a fit clearance for accommodating the thin-diameter thin-wall metal pipe is reserved between the fixed wheel and the bending wheel.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that the clamping mechanism comprises a vertical plate arranged on the horizontal end face of the frame and a chuck component fixed at the top of the vertical plate, a ball screw pair is fixedly arranged at the bottom of the vertical plate, the ball screw pair is connected with a second motor, the chuck component comprises a chuck shell fixedly connected with the vertical plate and a chuck shaft arranged in the cavity of the chuck shell, the tail end of the chuck shaft is fixed in the chuck shell, the top end of the chuck shaft extends out of the chuck shell, the top end of the chuck shaft is provided with a chuck, the center of the chuck is provided with a clamping hole, the central axis of the chuck and the central axis of a fit clearance between the fixed wheel and the bending wheel are on the same straight line, a chuck sleeve slidably connected with the chuck shaft is sleeved on the outer side of the chuck shaft, and one end of the chuck sleeve, which is close to the chuck, is internally provided with a hole, the small end of the inner taper hole faces the top end direction of the chuck shaft, an outer taper surface matched with the inner taper hole is arranged on the outer side of the chuck, the other end of the chuck sleeve is fixedly connected with the electromagnet push column, and an electromagnet coil is distributed on the outer side of the electromagnet push column.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that the fixed wheel is provided with a first arc-shaped groove, the bending wheel is provided with a second arc-shaped groove, and a fit clearance for containing the thin-diameter thin-wall metal pipe is formed between the first arc-shaped groove and the second arc-shaped groove.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that a gear flange is arranged between the first positioning shaft and the second gear, and a thrust bearing is arranged between the second gear and the bottom plate.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that a first linear guide rail pair parallel to the ball screw pair is mounted on the rack, and the bottom of the vertical plate is connected with the linear guide rail pair in a sliding mode.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that an electromagnet shell is sleeved on the outer side of an electromagnet coil, an adjusting bolt is installed in the electromagnet shell, an adjusting nut connected with the adjusting bolt in a matched mode is arranged on the outer wall of the electromagnet shell, and one end of the adjusting bolt is in contact with an electromagnet push column.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that an end face flange is arranged at one end, close to the chuck, of the chuck shell, and a spring is arranged between the end face flange and the chuck sleeve.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that a guide groove is formed in one end, close to the bending mechanism, of the rack, and the central axis of the guide groove coincides with the central axis of the chuck.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that the first motor and the second motor are servo motors.
The bending device for the thin-diameter thin-wall metal pipe is characterized in that the rack is provided with a second linear guide rail pair in sliding connection with the bottom plate, and the guide rail direction of the second linear guide rail pair is perpendicular to the clamping direction of the thin-diameter thin-wall metal pipe.
Compared with the prior art, the invention has the following advantages:
1. the invention clamps one end of the thin-diameter thin-wall metal pipe to be processed under the control of the second motor in the clamping mechanism, sends the other end of the thin-diameter thin-wall metal pipe to a fit clearance between the fixed wheel and the bending wheel, and controls the bending wheel to rotate around the fixed wheel through the first motor, thereby realizing the bending operation of the thin-diameter thin-wall metal pipe.
2. According to the invention, the first arc-shaped groove is formed in the fixed wheel, and the second arc-shaped groove is formed in the bending wheel, so that the fit clearance of the first arc-shaped groove and the second arc-shaped groove is more in line with the appearance of the thin-diameter thin-wall metal pipe, the thin-diameter thin-wall metal pipe is uniformly stressed in the fit clearance, and the smoothness of the bending part is further improved.
3. The thrust bearing and the gear flange are both beneficial to the flexible rotation of the second gear, the friction resistance between the second gear and the first positioning shaft and the bottom plate in a static state is reduced, the transition smoothness and the uniformity of the bending part of the thin-diameter thin-wall metal pipe are improved, and the poor deformation of the processing part of the thin-diameter thin-wall metal pipe is avoided.
4. According to the invention, through the spring arranged between the chuck sleeve and the end face flange, on one hand, the automatic clamping of the chuck is realized by utilizing the elasticity of the spring, and on the other hand, the thin-diameter thin-wall metal pipe is in a power-off state in a clamped state, so that the clamping mechanism realizes the clamping function of the thin-diameter thin-wall metal pipe without external control in a working state of the bending mechanism, and the clamping stability of the clamping mechanism is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a thin-diameter thin-wall metal pipe bending device of the invention.
Fig. 2 is a plan view of the thin-diameter thin-walled metal pipe bending apparatus of the present invention.
FIG. 3 is a schematic view of the chuck assembly of the bending apparatus for thin-wall metal pipes with small diameter of the present invention.
Fig. 4 is a schematic view of a bending mechanism of the thin-diameter thin-wall metal pipe bending device of the invention.
FIG. 5 is a schematic view showing the assembling relationship of the fixed wheel, the bending wheel and the bull gear according to the present invention.
FIG. 6 is a schematic view of the assembled relationship of the chuck shaft and chuck sleeve of the present invention.
FIG. 7 is a view showing a state of use of the bending apparatus for a thin-walled metal tube of small diameter according to the present invention.
FIG. 8a is a schematic view of a first shape of a thin-walled metal tube with a small diameter manufactured by the apparatus of the present invention.
FIG. 8b is a second schematic view of the shape of a thin-walled metal tube with a small diameter manufactured by the apparatus of the present invention.
FIG. 8c is a schematic view of a third shape of a thin-walled metal tube with a small diameter manufactured by the apparatus of the present invention.
FIG. 8d is a schematic view of a fourth shape of a thin-walled metal tube with a small diameter manufactured by the apparatus of the present invention.
Description of reference numerals:
1, a frame; 2-a first motor; 3-a first gear;
4-a second gear; 5-gear flange; 6, a fixed wheel;
6-1-a first arc-shaped groove; 7-a first positioning shaft; 8-bending wheel;
8-1-a second arc-shaped groove; 9-a second positioning shaft; 10-a base plate;
11-a thrust bearing; 12, standing a plate; 13-ball screw pair;
14-a second motor; 15-chuck shaft; 15-1-chuck;
15-1-external conical surface; 16-a collet sleeve; 16-1-inner taper hole;
17-a cartridge housing; 18-end face flange; 19-a spring;
20-electromagnet pushing column; 21-an electromagnet coil; 22-electromagnet housing;
23-adjusting the bolt; 24-adjusting the nut; 25-a first linear guide pair;
26-a guide groove; 27-a second linear guide pair; 28-the piece to be processed.
Detailed Description
Example 1
As shown in fig. 1 to 5, the thin-diameter thin-wall metal pipe bending device of this embodiment includes a frame 1, a clamping mechanism for clamping the thin-diameter thin-wall metal pipe is disposed at one end of the frame 1, a bending mechanism for bending the thin-diameter thin-wall metal pipe is disposed at the other end of the frame 1, the bending mechanism includes a first motor 2 fixedly mounted in the frame 1 and a first gear 3 sleeved on the first motor 2, the first gear 3 is engaged with a second gear 4, a first positioning shaft 7 is disposed at the center of the second gear 4, the bottom of the first positioning shaft 7 is fixed on a bottom plate 10, the bottom plate 10 is mounted on the frame 1, a fixed wheel 6 is fixed on the upper end surface of the first positioning shaft 7, a second positioning shaft 9 is further disposed on the large gear 4, and the second positioning shaft 9 is different from the first positioning shaft 7, the second positioning shaft 9 is sleeved with a bending wheel 8, and a fit clearance for accommodating the thin-diameter thin-wall metal pipe is reserved between the fixed wheel 6 and the bending wheel 8.
In this embodiment, the clamping mechanism is used for clamping the thin-diameter thin-wall metal pipe to be processed, that is, the thin-diameter thin-wall metal pipe to be processed is clamped and supported, and the bending mechanism is used for bending the thin-diameter thin-wall metal pipe to be processed, that is, the thin-diameter thin-wall metal pipe to be processed is bent to a preset angle; the first motor 2 is arranged to provide kinetic energy for the bending mechanism, the first motor 2 operates to drive the first gear 3 arranged on the first motor 2 to rotate, the second gear 4 connected with the first gear 3 in a meshed manner is driven to rotate, the first positioning shaft 7 arranged at the center of the second gear 4 is fixed on the bottom plate 10 and does not rotate along with the rotation of the second gear 4, the second positioning shaft 9 which is arranged on the second gear 4 and is not coaxial with the first positioning shaft 7 moves circumferentially around the first positioning shaft 7 along with the rotation of the second gear 4, so that the bending wheel 8 sleeved on the second positioning shaft 9 moves circumferentially around the fixed wheel 6 fixed on the upper end surface of the first positioning shaft 7, a matching gap reserved between the fixed wheel 6 and the bending wheel 8 is used for accommodating a thin-diameter thin-wall metal pipe to be processed, the thin-diameter thin-wall metal pipe in the matching gap is gradually bent to a preset angle along with the movement of the bending wheel 8, thereby completing the bending work of the thin-diameter thin-wall metal pipe to be processed. The invention realizes the bending of the thin-diameter thin-wall metal pipe into different angles by controlling the rotation displacement of the bending wheel 8 relative to the fixed wheel 6, by controlling the fit clearance between the bending wheel 8 and the fixed wheel 6, the thin-diameter thin-wall metal pipes with different diameters are accommodated in the bending wheel, is suitable for the bending processing of thin-diameter thin-wall metal pipes with different diameters, and the thin-diameter thin-wall metal pipe to be processed is bent in the rotating process of the bending wheel 8, the bending wheel 8 is always contacted with the part to be bent of the thin-diameter thin-wall metal pipe in the bending process, the stressed contact surface of the part to be bent is large, meanwhile, the bending wheel 8 moves to gradually bend the part to be bent, so that the part to be bent is uniformly stressed between the fixed wheel 6 and the bending wheel 8, further, the bending part of the thin-diameter thin-wall metal pipe is enabled to be transited smoothly, and the thin-diameter thin-wall metal pipe cannot be broken locally or deformed extremely; the bending device controls the operation of the bending wheel 8 through the first motor 2, the bending angle is easy to control, the repeatability of the bending angle is high, the angle precision of the bent thin-diameter thin-wall metal pipes which are processed and produced in batches is improved, the automation degree is high, the operation is simple, the processing efficiency is high, and the bending device can be widely applied to the bending processing of the thin-diameter thin-wall metal pipes with different specifications.
As shown in fig. 1 to 3 and fig. 6, optionally, in this embodiment, the clamping mechanism includes a vertical plate 12 disposed on a horizontal end surface of the frame 1, and a chuck component fixed on a top of the vertical plate 12, a ball screw pair 13 is fixedly mounted at a bottom of the vertical plate 12, the ball screw pair 13 is connected to a second motor 14, wherein the chuck component includes a chuck housing 17 fixedly connected to the vertical plate 12 and a chuck shaft 15 mounted in a cavity of the chuck housing 17, a distal end of the chuck shaft 15 is fixed in the chuck housing 17, a distal end of the chuck shaft extends out of the chuck housing 17, a top end of the chuck shaft 15 is provided as a chuck 15-1, a center of the chuck 15-1 is provided with a chuck hole, a center axis of the chuck 15-1 and a center axis of a fit gap between the fixed wheel 6 and the bending wheel 8 are on the same straight line, a chuck sleeve 16 slidably connected to the chuck shaft 15 is sleeved outside the chuck shaft 15, an inner taper hole 16-1 is formed in one end, close to the chuck 15-1, of the chuck sleeve 16, the small end of the inner taper hole 16-1 faces the top end direction of the chuck shaft 15, an outer taper surface 15-1-1 matched with the inner taper hole 16-1 is arranged on the outer side of the chuck 15-1, the other end of the chuck sleeve 16 is fixedly connected with an electromagnet push column 20, and an electromagnet coil 21 is distributed on the outer side of the electromagnet push column 20. The second motor 14 is arranged to provide kinetic energy for the clamping mechanism, the second motor 14 operates to drive the ball screw pair 13 arranged on the second motor 14, and further drives the vertical plate 12 arranged on the ball screw pair 13 and the chuck part fixed on the vertical plate 12, so that the clamping part is close to the bending mechanism, and further the thin-diameter thin-wall metal pipe to be processed and clamped in the clamping part is conveyed to the bending mechanism for bending processing, and the thin-diameter thin-wall metal pipe in the bending processing process is supported; the clamping head component comprises a clamping head shell 17 fixedly connected with the vertical plate 12, a clamping head shaft 15 arranged in the clamping head shell 17 is used for clamping a thin-diameter thin-wall metal pipe to be processed, the tail end of the clamping head shaft 15 is fixed in the clamping head shell 17, the top end of the clamping head shaft 15 extends out of the clamping head shell 17, a clamping head 15-1 is arranged at the end, so that an operator can conveniently clamp the thin-diameter thin-wall metal pipe to be processed in the clamping head 15-1, a clamping hole formed in the center of the clamping head 15-1 is used for clamping the thin-diameter thin-wall metal pipe, the central shaft of the clamping head 15-1 and the central shaft of a fit clearance between the fixed wheel 6 and the bending wheel 8 are arranged on the same straight line, so that the two ends of the thin-diameter thin-wall metal pipe to be processed are clamped in the clamping head component, the bending angle is accurately controlled, and the thin-diameter thin-wall metal pipe is prevented from being distorted and deformed in the processing process, the machining precision is influenced; the clamp head shaft 15 is sleeved with the clamp head sleeve 16 in sliding connection, one end, close to the clamp head 15-1, of the clamp head sleeve 16 is provided with the inner taper hole 16-1, the small end, provided with the inner taper hole 16-1, of the clamp head sleeve 16 faces the top end direction of the clamp head shaft 15, so that the clamp head 15-1 can be clamped and loosened through the movement of the clamp head sleeve 16, when the clamp head sleeve 16 moves towards the clamp head 15-1 end of the clamp head shaft 15, namely the clamp head sleeve 16 moves towards the outside of the clamp head shell 17, the clamp head 15-1 is loosened, the thin-diameter thin-wall metal pipe is loaded, when the clamp head sleeve 16 is far away from the clamp head 15-1 end, namely the clamp head sleeve 16 moves towards the inside of the clamp head shell 17, the clamp head 15-1 is clamped, and the thin-diameter thin-wall metal pipe clamped in the clamp head is clamped; the outer conical surface 15-1-1 matched with the inner conical hole 16-1 is arranged on the outer side of the chuck 15-1, so that the movement between the chuck sleeve 16 and the chuck 15-1 is smoother, the central shaft of the thin-diameter thin-walled metal pipe clamped in the chuck 15-1 is always in a straight line, the position consistency of the bending part of the thin-diameter thin-walled metal pipe processed in batches is improved, the processing precision of the thin-diameter thin-walled metal pipe processed in batches is improved, and the consistency and the qualification rate of the batch processing are further improved; the electromagnet push column 20 connected with the chuck sleeve 16 is arranged to enable the chuck sleeve 16 to move relative to the chuck shaft 15, so that the chuck 15-1 can be clamped or loosened, and the electromagnet coil 21 arranged on the outer side of the electromagnet push column 20 provides kinetic energy for the electromagnet push column 20.
As shown in fig. 5, optionally, in this embodiment, a first arc-shaped groove 6-1 is formed in the fixed wheel 6, a second arc-shaped groove 8-1 is formed in the bending wheel 8, and a fit gap for accommodating the thin-diameter thin-walled metal pipe is formed between the first arc-shaped groove 6-1 and the second arc-shaped groove 8-1. The fit clearance formed between the first arc-shaped groove 6-1 formed on the fixed wheel 6 and the second arc-shaped groove 8-1 formed on the bending wheel 8 is used for containing the thin-diameter thin-wall metal pipe, and the shape of the fit clearance formed by the first arc-shaped groove 6-1 and the second arc-shaped groove 8-1 is more consistent with the appearance of the thin-diameter thin-wall metal pipe, so that the thin-diameter thin-wall metal pipe is uniformly stressed in the fit clearance, and the smoothness degree of the bending part is further improved. In actual use, according to different diameters of the thin-diameter thin-wall metal pipes, the first arc-shaped groove 6-1 and the second arc-shaped groove 6-2 with corresponding hole diameters are formed in the fixing wheel 6 and the bending wheel 8, so that the thin-diameter thin-wall metal pipes with different diameters can be machined, and the universality of the device is improved.
As shown in fig. 4, optionally, in the present embodiment, a gear flange 5 is disposed between the first positioning shaft 7 and the second gear 4, and a thrust bearing 11 is disposed between the second gear 4 and the bottom plate 10. The thrust bearing 11 and the gear flange 5 are both beneficial to the flexible rotation of the second gear 4, the friction resistance between the first positioning shaft 7 and the bottom plate 10 in a static state is reduced, the transition smoothness and the uniformity of the bending part of the thin-diameter thin-wall metal pipe are improved, and the poor deformation of the processing part of the thin-diameter thin-wall metal pipe is avoided.
As shown in fig. 1 and 4, optionally, in this embodiment, a first linear guide rail pair 25 parallel to the ball screw pair 13 is installed on the machine frame 1, and the bottom of the vertical plate 12 is slidably connected to the linear guide rail pair 25. The first linear guide rail pair 25 parallel to the ball screw pair 13 is arranged to guide the movement of the vertical plate 12 slidably connected to the first linear guide rail pair 25, and further guide the clamping component fixed on the vertical plate 12, so that the thin-diameter thin-wall metal pipe clamped in the clamping component and the fit clearance in the bending mechanism are always coaxial, and the processing precision of the thin-diameter thin-wall metal pipe processed in batches is further ensured.
As shown in fig. 3, optionally, in this embodiment, an electromagnet housing 22 is sleeved outside the electromagnet coil 21, an adjusting bolt 23 is installed in the electromagnet housing 22, an adjusting nut 24 cooperatively connected with the adjusting bolt 23 is disposed on an outer wall of the electromagnet housing 22, and one end of the adjusting bolt 23 is in contact with the electromagnet push post 20. By arranging the adjusting bolt 23 and the adjusting nut 24 which are matched with each other on the electromagnet shell 22 and contacting the tail end of the adjusting bolt 23 with the electromagnet push column 20, an operator can adjust the initial positions of the electromagnet push column 20 and the chuck shaft 15 by adjusting the depth of the adjusting bolt 23 in the electromagnet shell 22, further adjust the initial positions of the chuck sleeve 16 connected with the electromagnet push column 20 and the chuck shaft 15, further adjust the initial diameter of the chuck 15-1, facilitate the clamping and taking out of thin-wall metal pipes with different diameters, and improve the applicability of the device.
As shown in fig. 3, optionally, in the present embodiment, an end face flange 18 is provided at one end of the cartridge housing 17 close to the cartridge 15-1, and a spring 19 is provided between the end face flange 18 and the cartridge sleeve 16. After the electromagnet coil 21 in the clamping mechanism of the invention is electrified, the electromagnet push column 20 pushes the chuck sleeve 16 to move towards the outside of the chuck shell 17, the spring 19 connected to the chuck sleeve 16 is compressed, the chuck 15-1 is released, and after the electromagnet coil 21 is de-energized, the chuck sleeve 16 and the electromagnet push post 20 connected with the chuck sleeve 16 are moved to the inner side of the chuck housing 17 by the elastic force of the spring 19, the chuck 15-1 is clamped, by the spring 19 arranged between the chuck sleeve 16 and the end face flange 18, on one hand, the automatic clamping of the chuck 15-1 is realized by the elastic force of the spring 19, on the other hand, the small-diameter thin-wall metal pipe is in a power-off state when being clamped, under the working state of the bending mechanism, the clamping mechanism does not need external control to realize the clamping function of the thin-diameter thin-wall metal pipe, and the clamping stability of the clamping mechanism is improved.
As shown in fig. 1, optionally, in this embodiment, a guide groove 26 is provided at one end of the frame 1 close to the bending mechanism, and a central axis of the guide groove 26 coincides with a central axis of the chuck 15-1. The guide groove 26 which is coincident with the central axis of the chuck 15-1 plays a role in guiding the thin-diameter thin-wall metal pipe to be processed, so that the thin-diameter thin-wall metal pipe to be processed is ensured to be coaxial with a fit clearance between the fixed wheel 6 and the bending wheel 8, the thin-diameter thin-wall metal pipe is uniformly stressed in the bending processing process, meanwhile, the guide groove 26 is arranged at one end close to the bending mechanism to play a certain supporting role in supporting the thin-diameter thin-wall metal pipe in the bending processing process, the supporting point of the thin-diameter thin-wall metal pipe is transferred from the clamping mechanism to one end close to the bending mechanism, the phenomenon that the supporting point is far deformed due to stress in the thin-diameter thin-wall metal pipe processing process is avoided, and the processing precision of the thin-diameter thin-wall metal pipe is improved.
As shown in fig. 1 to 4, optionally, in this embodiment, the first motor 2 and the second motor 14 are both servo motors. The servo motors are used as the first motor 2 and the second motor 14, the starting is fast, the motors can be accurately controlled to rotate, the servo motors can also stop running immediately after the control voltage is lost, the autorotation phenomenon is avoided, and the processing bending angle is easy to control, so that the precision of the bending angle of the thin-diameter thin-wall metal pipe is high, and the repetition rate and the qualification rate of the bending angle of the thin-diameter thin-wall metal pipe after batch processing are improved; meanwhile, the encoder in the servo motor can preset the bending angle of the thin-diameter thin-wall metal pipe to be processed, so that the control precision of the thin-diameter thin-wall metal pipe to be processed is further improved, and the batch processing qualified rate is improved.
As shown in fig. 4, optionally, in this embodiment, a second linear guide pair 27 slidably connected to the bottom plate 10 is provided on the frame 1, and a guide direction of the second linear guide pair 27 is perpendicular to a clamping direction of the thin-walled metal pipe. The second linear guide rail pair 27 connected with the bottom plate 10 in a sliding mode is arranged on the rack 1, the guide rail direction of the second linear guide rail pair 27 is perpendicular to the clamping direction of the thin-diameter thin-wall metal pipe, so that the whole bending mechanism installed on the bottom plate 10 can move vertically on the second linear guide rail pair 27 relative to the clamping direction of the thin-diameter thin-wall metal pipe, the central shaft of a fit clearance between the fixed wheel 6 and the bending wheel 8 in the bending mechanism is overlapped with the central shaft of the clamping mechanism through movement adjustment, and the machining precision of bending the thin-diameter thin-wall metal pipe is further improved. In actual use, the bending mechanism is integrally adjusted on the second linear guide pair 27, and then the base plate 10 is fixed to the frame 1 by a fixing member such as a bolt.
As shown in fig. 7, the use flow of the thin-diameter thin-wall metal pipe bending device of the present invention is as follows: one end of a thin-diameter thin-wall metal pipe workpiece 28 to be machined is arranged in a chuck 15-1, the other end of the thin-diameter thin-wall metal pipe workpiece 28 is arranged in a guide groove 26, a second motor 14 is started, the second motor 14 drives a ball screw pair 13 to do axial linear motion, the workpiece 28 to be machined is sent into a fit clearance between a fixed wheel 6 and a bending wheel 8, after the workpiece 28 to be machined reaches a preset bending position, the second motor 14 is closed, a first motor 2 is started, the first motor 2 rotates to drive a first gear 3 and a second gear 4, the bending wheel 8 on the second gear 4 rotates around the fixed wheel 6, and after the bending wheel 8 rotates to a preset angle, the first motor 2 stops rotating to complete a bending process; if the workpiece 28 to be machined needs to be bent for the second time, the second motor 14 is started again, the second motor 14 continues to drive the ball screw pair 13 to make axial linear motion, the workpiece 28 to be machined is sent to the preset secondary bending position again, the second motor 14 is turned off, the first motor 2 is started, the first motor 2 is turned off after the wheel 8 to be bent rotates to the preset angle of secondary bending, the second bending process of the workpiece 28 to be machined is completed, the bending process at the preset position is completed by analogy, the preset bending angle is reached, and the various thin-diameter thin-wall metal pipes with different bending positions and different bending angles, which are machined by the device, are shown in fig. 8a, 8b, 8c and 8 d.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent structural changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (10)
1. A thin-diameter thin-wall metal pipe bending device is characterized by comprising a rack (1), wherein one end of the rack (1) is provided with a clamping mechanism for clamping the thin-diameter thin-wall metal pipe, the other end of the rack (1) is provided with a bending mechanism for bending the thin-diameter thin-wall metal pipe, the bending mechanism comprises a first motor (2) fixedly mounted in the rack (1) and a first gear (3) sleeved on the first motor (2), the first gear (3) is connected to a second gear (4) in a meshing manner, a first positioning shaft (7) is arranged at the center of the second gear (4), the bottom of the first positioning shaft (7) is fixed on a bottom plate (10), the bottom plate (10) is mounted on the rack (1), a fixed wheel (6) is fixed on the upper end face of the first positioning shaft (7), a second positioning shaft (9) is further arranged on the large gear (4), and the second positioning shaft (9) and the first positioning shaft (7) are not coaxial, the second positioning shaft (9) is sleeved with a bending wheel (8), and a fit clearance for accommodating the thin-diameter thin-wall metal pipe is reserved between the fixed wheel (6) and the bending wheel (8).
2. The bending device for the thin-diameter thin-wall metal pipe according to claim 1, wherein the clamping mechanism comprises a vertical plate (12) arranged on the horizontal end face of the rack (1) and a chuck component fixed at the top of the vertical plate (12), a ball screw pair (13) is fixedly installed at the bottom of the vertical plate (12), the ball screw pair (13) is connected with a second motor (14), the chuck component comprises a chuck housing (17) fixedly connected with the vertical plate (12) and a chuck shaft (15) installed in a cavity of the chuck housing (17), the tail end of the chuck shaft (15) is fixed in the chuck housing (17), the top end of the chuck shaft extends out of the chuck housing (17), the top end of the chuck shaft (15) is provided with a chuck (15-1), a clamping hole is formed in the center of the chuck (15-1), and a fit clearance between the central shaft of the chuck (15-1) and the fixed wheel (6) and the bending wheel (8) The central shaft of the electromagnetic chuck is arranged on the same straight line, a chuck sleeve (16) which is connected with the chuck shaft (15) in a sliding mode is sleeved on the outer side of the chuck shaft (15), an inner taper hole (16-1) is formed in one end, close to the chuck (15-1), of the chuck sleeve (16), the small end of the inner taper hole (16-1) faces the top end direction of the chuck shaft (15), an outer taper surface (15-1-1) matched with the inner taper hole (16-1) is arranged on the outer side of the chuck (15-1), the other end of the chuck sleeve (16) is fixedly connected with an electromagnet push column (20), and an electromagnet coil (21) is arranged on the outer side of the electromagnet push column (20).
3. The bending device for the thin-diameter thin-wall metal pipe according to claim 1, wherein a first arc-shaped groove (6-1) is formed in the fixed wheel (6), a second arc-shaped groove (8-1) is formed in the bending wheel (8), and a fit clearance for accommodating the thin-diameter thin-wall metal pipe is formed between the first arc-shaped groove (6-1) and the second arc-shaped groove (8-1).
4. The bending device for the thin-wall metal pipe with the small diameter according to claim 1, wherein a gear flange (5) is arranged between the first positioning shaft (7) and the second gear (4), and a thrust bearing (11) is arranged between the second gear (4) and the bottom plate (10).
5. The bending device for the thin-diameter thin-wall metal pipe according to claim 2, wherein a first linear guide rail pair (25) parallel to the ball screw pair (13) is mounted on the machine frame (1), and the bottom of the vertical plate (12) is connected with the linear guide rail pair (25) in a sliding manner.
6. The bending device for the thin-diameter thin-wall metal pipes according to claim 2, wherein an electromagnet shell (22) is sleeved outside the electromagnet coil (21), an adjusting bolt (23) is installed in the electromagnet shell (22), an adjusting nut (24) which is connected with the adjusting bolt (23) in a matched mode is arranged on the outer wall of the electromagnet shell (22), and one end of the adjusting bolt (23) is in contact with the electromagnet push column (20).
7. The bending device for the thin-walled metal pipes with small diameters as claimed in claim 2, characterized in that an end flange (18) is arranged at one end of the chuck housing (17) close to the chuck (15-1), and a spring (19) is arranged between the end flange (18) and the chuck sleeve (16).
8. The bending device for the thin-walled metal tube with the small diameter according to claim 2, characterized in that a guide groove (26) is formed in one end of the machine frame (1) close to the bending mechanism, and the central axis of the guide groove (26) is coincident with the central axis of the chuck (15-1).
9. The bending device for the thin-wall metal pipe with the small diameter according to claim 2, wherein the first motor (2) and the second motor (14) are both servo motors.
10. The bending device for the thin-diameter thin-wall metal pipe according to claim 1, wherein a second linear guide rail pair (27) connected with the bottom plate (10) in a sliding manner is arranged on the machine frame (1), and the guide rail direction of the second linear guide rail pair (27) is perpendicular to the clamping direction of the thin-diameter thin-wall metal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626317.6A CN113333531B (en) | 2021-06-04 | 2021-06-04 | Bending device for thin-diameter thin-wall metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626317.6A CN113333531B (en) | 2021-06-04 | 2021-06-04 | Bending device for thin-diameter thin-wall metal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113333531A true CN113333531A (en) | 2021-09-03 |
| CN113333531B CN113333531B (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110626317.6A Active CN113333531B (en) | 2021-06-04 | 2021-06-04 | Bending device for thin-diameter thin-wall metal pipe |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883856A (en) * | 2005-06-22 | 2006-12-27 | 王洋 | Automatic clamping chuck device of instrument lathe |
| TW200722202A (en) * | 2005-12-05 | 2007-06-16 | Ying Lin Machine Ind Co Ltd | Pipe bending machine |
| JP2007283359A (en) * | 2006-04-17 | 2007-11-01 | Opton Co Ltd | Mandrel for bending work and bending device using it |
| TW201249561A (en) * | 2011-06-15 | 2012-12-16 | Chiao Sheng Machinery Co Ltd | Strip bending and forming process machine |
| CN109128894A (en) * | 2017-06-28 | 2019-01-04 | 杨斌堂 | pipe clamp mechanism |
-
2021
- 2021-06-04 CN CN202110626317.6A patent/CN113333531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883856A (en) * | 2005-06-22 | 2006-12-27 | 王洋 | Automatic clamping chuck device of instrument lathe |
| TW200722202A (en) * | 2005-12-05 | 2007-06-16 | Ying Lin Machine Ind Co Ltd | Pipe bending machine |
| JP2007283359A (en) * | 2006-04-17 | 2007-11-01 | Opton Co Ltd | Mandrel for bending work and bending device using it |
| TW201249561A (en) * | 2011-06-15 | 2012-12-16 | Chiao Sheng Machinery Co Ltd | Strip bending and forming process machine |
| CN109128894A (en) * | 2017-06-28 | 2019-01-04 | 杨斌堂 | pipe clamp mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113333531B (en) | 2022-07-05 |
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