CN116871376A - Pipe fitting rotary groove machining device and machining method thereof - Google Patents
Pipe fitting rotary groove machining device and machining method thereof Download PDFInfo
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- CN116871376A CN116871376A CN202310960742.8A CN202310960742A CN116871376A CN 116871376 A CN116871376 A CN 116871376A CN 202310960742 A CN202310960742 A CN 202310960742A CN 116871376 A CN116871376 A CN 116871376A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 144
- 238000007667 floating Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 37
- 230000006698 induction Effects 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
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Abstract
The application discloses a pipe fitting rotary groove processing device, which comprises: the machine frame is provided with a fixed disc, three rolling wheel mounting blocks are connected to the fixed disc in a sliding manner, and the rolling wheel mounting blocks can move along the radial direction of the fixed disc; the rolling wheel mounting block is rotationally connected with a rolling wheel; the rotary driving mechanism is simultaneously connected with the three rolling wheels; the feeding driving mechanism is used for driving the three rolling wheel mounting blocks to synchronously move along the radial direction of the fixed disc; the clamping die feeding device is used for clamping the pipe fitting and driving the pipe fitting to move, and the pipe fitting can rotate around the central axis of the pipe fitting after being clamped. A floating mandrel mechanism comprising a movable mandrel; the pipe is processed by inserting a mandrel into the pipe. According to the application, the rolling wheel is driven to rotate by the rotary driving mechanism, and the pipe fitting is driven to rotate by the rotation of the rolling wheel, so that rolling friction between the rolling wheel and the surface of the pipe fitting is ensured, sliding friction between the rolling wheel and the surface of the pipe fitting is avoided, and therefore, falling of chip powder on the surface of the pipe fitting in the processing process is effectively reduced.
Description
Technical Field
The application relates to the technical field of pipe fitting machining, in particular to a pipe fitting rotary groove machining device and a machining method thereof.
Background
When the existing grooving machine carries out grooving processing on the pipe fitting, the pipe fitting is usually fixed and clamped on a pipe fitting clamping die, so that the pipe fitting is kept motionless and cannot rotate around the central axis of the pipe fitting; then, the rolling wheel moves towards the direction of the pipe fitting through the feeding mechanism and is in compression contact with the outer side of the pipe fitting, when the pipe fitting is processed, the rolling wheel performs circumferential operation on the outer side of the pipe fitting, and meanwhile, the rolling wheel continuously moves towards the center direction of the pipe fitting under the action of the feeding mechanism; the rolling wheel is rotationally connected to the rolling wheel shaft, so that when the rolling wheel moves circularly around the pipe fitting, the rolling wheel can rotate around the rolling wheel shaft, and rolling friction is formed between the rolling wheel and the outer surface of the pipe fitting; under the rotation and pressure action of the rolling wheel, the outer side of the pipe fitting forms an annular groove structure.
However, in the existing rotary groove processing mode, because the pipe fitting is kept still, the rolling wheel is driven to rotate by virtue of the friction force between the pipe fitting and the rolling wheel, in the actual processing process, because a certain friction force exists between the rolling wheel and the rolling wheel shaft, when the friction resistance between the rolling wheel shaft and the rolling wheel is large, the friction force between the rolling wheel and the pipe fitting is insufficient to drive the rolling wheel to rotate, so that the rolling wheel is in a clamping state, the rolling friction between the rolling wheel and the outer surface of the pipe fitting is changed into sliding friction, in the sliding friction state, the rolling wheel can slip the outer surface of the pipe fitting, and the sliding friction can cause the surface layer material of the pipe fitting to be peeled off and form powdery processing fragments, and the processing fragments can fall on equipment and are more troublesome to clean; particularly, when aluminum pipes are processed, a large amount of aluminum powder scraps are generated during processing due to weaker aluminum materials, and the aluminum pipes are difficult to clean.
Disclosure of Invention
The application aims to solve the defects in the prior art and provides a pipe fitting rotary groove processing device and a processing method thereof.
The application aims at realizing the following technical scheme: a pipe fitting groove machining device, comprising:
the machine frame is provided with a fixed disc, three rolling wheel mounting blocks are connected to the fixed disc in a sliding manner, and the rolling wheel mounting blocks can move along the radial direction of the fixed disc; the rolling wheel mounting block is rotationally connected with a rolling wheel;
the rotary driving mechanism is simultaneously connected with the three rolling wheels and is used for driving the three rolling wheels to synchronously rotate;
the feeding driving mechanism is used for driving the three rolling wheel mounting blocks to synchronously move along the radial direction of the fixed disc;
the clamping die feeding device is used for clamping the pipe fitting and driving the pipe fitting to move, and the pipe fitting can rotate around the central axis of the pipe fitting after being clamped.
A floating mandrel mechanism comprising a movable mandrel; the pipe is processed by inserting a mandrel into the pipe.
Preferably, the rotary driving mechanism comprises a first motor, a driving gear shaft, a driven gear shaft and a universal transmission shaft, wherein the driving gear shaft and the driven gear shaft are both rotationally connected to the frame, the driving gear shaft is in transmission connection with the first motor, and a driving gear is arranged on the driving gear shaft;
the driven gear shafts are provided with three driven gears, and the driven gears are meshed with the driving gears; the rolling wheel mounting block is rotationally connected with a rolling wheel shaft, and the rolling wheel is arranged on the rolling wheel shaft; the three driven gear shafts are respectively in one-to-one correspondence with the three rolling wheel shafts; the driven gear shaft is connected with the corresponding rolling wheel shaft through a universal transmission shaft.
Preferably, the feeding driving mechanism comprises a movable ring and a transmission fork, wherein the movable ring is sleeved on the outer side of the fixed disc and can slide along the axial direction of the fixed disc; the rolling wheel mounting block is provided with a first inclined plane, and the inner side of the movable ring is provided with a second inclined plane corresponding to the first inclined plane; the first inclined surface is contacted with the second inclined surface; a reset mechanism is arranged between the rolling wheel mounting block and the frame;
the transmission fork is rotationally connected to the frame, one end of the transmission fork is a driving connecting end, and the driving connecting end is connected with the axial driving device; the other end of the transmission fork is a transmission connecting end, a fixed shaft is arranged on the transmission connecting end, a chute corresponding to the fixed shaft is arranged on the outer side of the movable ring, and the fixed shaft extends into the chute;
the axial driving device comprises a rotary connecting base, a rotary seat, a second motor, a screw rod and a screw rod sleeve, wherein the rotary connecting base is arranged on the frame, and the rotary seat is rotationally connected to the rotary connecting base; the rotating seat is provided with a second motor, and the output shaft of the second motor is connected with a screw rod; one end of the screw rod sleeve is hinged with a driving connecting end on the transmission fork, a threaded hole matched with the screw rod is formed in the screw rod sleeve, and the screw rod is connected in the threaded hole on the screw rod sleeve.
Preferably, the reset mechanism comprises a reset spring rod connected with the rolling wheel mounting block and a fixed plate which is arranged on the frame and corresponds to the rolling wheel mounting block, and the fixed plate is positioned at the outer side of the circumference of the movable ring;
one end of the reset spring rod is connected with the rolling wheel mounting block, the other end of the reset spring rod is a free end, the reset spring rod penetrates through the fixing plate, and a reset spring is arranged between the free end of the reset spring rod and the fixing plate.
Preferably, the clamping die feeding mechanism comprises a servo moving device and a clamping cylinder arranged on the servo moving device, wherein a first clamping plate and a second clamping plate are respectively arranged at two ends of the clamping cylinder, a first clamping wheel frame is arranged on the first clamping plate, and a first clamping wheel is rotatably connected to the first clamping wheel frame; the second clamping plate is provided with a second clamping wheel frame, and the second clamping wheel frame is rotationally connected with a second clamping wheel corresponding to the first clamping wheel.
Preferably, the floating core rod mechanism further comprises a core rod seat, a guide shaft and a guide rail, wherein the guide rail is connected with a sliding seat in a sliding manner;
the fixed disc is provided with a guide shaft, the guide shaft is arranged along the axial direction of the fixed disc, the mandrel holder is connected to the guide shaft in a sliding manner, one end of the mandrel is rotationally connected to the mandrel holder, the mandrel is arranged in parallel with the guide shaft, and the mandrel is positioned among the three rolling wheels; the core rod seat is provided with a contact shaft, and the sliding seat is provided with a contact induction switch corresponding to the contact shaft;
a cylinder mounting seat is arranged on one side of the sliding seat away from the core rod seat, a floating positioning cylinder is arranged on the cylinder mounting seat, and a piston rod of the floating positioning cylinder is connected with the sliding seat;
the core rod is provided with a positioning step surface.
Preferably, the sliding seat is connected with a positioning adjusting screw, the positioning adjusting screw is connected to the sliding seat through threads, and one end of the positioning adjusting screw is opposite to the frame.
A pipe fitting rotary groove processing method comprises the following specific steps:
step 1), clamping a pipe fitting through a clamping die feeding device, placing the pipe fitting between a first clamping wheel and a second clamping wheel during clamping, and driving the first clamping wheel and the second clamping wheel to be close to each other by a clamping cylinder to clamp the pipe fitting;
step 2), a piston rod on the floating positioning cylinder stretches out and drives the sliding seat to move to a first working position;
step 3), driving the pipe fitting to move through a servo moving device on the clamping die feeding device, enabling the pipe fitting to extend between the three rolling wheels, and inserting the core rod from one end of the pipe fitting; along with the continuous extension of the pipe fitting, the end part of the pipe fitting props against the limit step surface on the core rod and pushes the core rod and the core rod seat to move towards the direction of the sliding seat; when the contact shaft on the core rod seat moves to be in contact with the contact induction switch on the sliding seat, the contact induction switch is triggered and sends a trigger signal to the control system, and the control system controls the servo moving device to stop moving; then a piston rod on the floating positioning cylinder is retracted and drives the sliding seat to retreat to a second working position, so that the contact induction switch is far away from the contact shaft;
step 4), driving the rolling wheel to move in a feeding way towards the center direction of the fixed disc through the feeding driving mechanism, wherein the specific method is as follows: the screw rod is driven to rotate through the second motor, the screw rod sleeve is driven to move along the axial direction of the screw rod and push the transmission fork to rotate, and the movable ring is driven to move along the axial direction of the fixed disc when the transmission fork rotates; in the moving process of the movable ring, under the action of the first inclined plane and the second inclined plane, the three rolling wheel mounting blocks are driven to move towards the center direction of the fixed disc at the same time, so that the three rolling wheels compress the outer side of the pipe fitting;
step 5), driving the three rolling wheels to synchronously rotate through the rotary driving mechanism, and driving the rolling wheels to continuously move towards the center direction of the fixed disc through the feeding driving mechanism in the rotating process of the rolling wheels, so that the outer side of the pipe fitting forms a groove structure under the rolling action of the rolling wheels;
step 6), after the processing of the rotary groove is completed, the second motor drives the screw rod to reversely rotate and enables the movable ring to reset, and the rolling wheel resets and loosens the pipe fitting under the action of the reset mechanism; the servo moving device drives the pipe fitting to withdraw from among the three rolling wheels.
The beneficial effects of the application are as follows: according to the application, the rolling wheel is driven to rotate through the rotary driving mechanism, the pipe fitting is driven to rotate through the rotation of the rolling wheel, and the rolling wheel actively rotates to be active power; the three rolling wheels act on the pipe simultaneously, so that rolling friction is guaranteed between the rolling wheels and the surface of the pipe, sliding friction cannot be generated between the rolling wheels and the surface of the pipe, falling of chip powder on the surface of the pipe in the processing process is effectively reduced, and difficulty in cleaning processing chips is reduced; meanwhile, as rolling friction is adopted between the rolling wheel and the outer surface of the pipe fitting, the scratch of the rolling wheel on the surface of the pipe fitting is reduced, and the smoothness of the machined surface of the pipe fitting is improved.
Drawings
Fig. 1 is a side view of the application.
FIG. 2 is a schematic view of one of the directions of the present application after removing the clamp feeding device.
FIG. 3 is a schematic view of another orientation of the present application after removal of the clamp die feed device.
Fig. 4 is an enlarged view of a portion a in fig. 3.
FIG. 5 is a front view of the present application with the clamp die feed apparatus removed.
FIG. 6 is a cross-sectional view of the present application with the clamp die feed apparatus removed.
Fig. 7 is an enlarged view of a portion B in fig. 6.
Fig. 8 is an enlarged view of a portion D in fig. 6.
Fig. 9 is a front view of the clamp die feeding device.
Fig. 10 is a top view of the clamp die feeding device.
Fig. 11 is a cross-sectional view of the mandrel.
Fig. 12 is a schematic view of the structure of the pipe before machining.
Fig. 13 is a schematic view of the structure after the pipe fitting is processed.
In the figure: 1. the device comprises a frame, 2, a first motor, 5, a universal transmission shaft, 6, a clamping die feeding device, 7, a floating mandrel mechanism, 8, a rolling wheel mounting block, 9, a rolling wheel, 10, a movable ring, 11, a hinging seat, 12, a transmission fork, 13, a fixed plate, 14, a reset spring rod, 15, a reset spring, 16, a rotary connecting base, 17, a second motor, 18, a screw rod, 19, a screw rod sleeve, 20, a pipe fitting, 21, a mandrel, 22, a fixed disc, 23, a rotary seat, 24, a fixed shaft, 25, a chute, 26, a first belt pulley, 27, a second belt pulley, 28 and a synchronous belt, 29, a driving gear shaft, 30, a driving gear, 31, a driven gear shaft, 32, a driven gear, 33, a guide rail, 34, a sliding seat, 35, a cylinder mounting seat, 36, a floating positioning cylinder, 37, a contact sensing switch, 38, a positioning adjusting screw, 39, a core rod seat, 40, a guide shaft, 41, a rolling wheel shaft, 42, a contact shaft, 45, a servo moving device, 46, a clamping cylinder, 47, a first clamping plate, 48, a first clamping wheel frame, 49, a first clamping wheel, 50, a second clamping wheel frame, 51, a second clamping wheel, 52, a second clamping plate, 53 and a positioning step surface.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present application.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
As shown in figures 1-13, the pipe fitting rotary groove machining device comprises a frame 1, a rotary driving mechanism, a feeding driving mechanism, a clamping die feeding device 6, a floating core rod mechanism 7 and a control system.
The frame 1 is provided with a fixed disc 22, and three rolling wheel mounting blocks 8 are connected to the fixed disc 22 in a sliding manner. Wherein, fixed disk 22 is discoid structure, evenly is provided with three guide ways on the fixed disk 22, and the guide way is along the radial setting of fixed disk 22, and the interval angle between the adjacent guide ways is 120 degrees, and roll extrusion wheel installation piece 8 sliding connection is in the guide way, and roll extrusion wheel installation piece 8 can be along the guide way slip, promptly along the radial slip of fixed disk 22.
The rolling wheel 9 is rotationally connected on the rolling wheel mounting block 8. Specifically, the roller shaft 41 is rotatably connected to the roller mounting block 8, and the roller 9 is rotatably connected to the roller shaft 41. The roller 9 is rotatable about a roller shaft 41.
The rotary driving mechanism is simultaneously connected with the three rolling wheels 9 and is used for driving the three rolling wheels 9 to synchronously rotate. Specifically, the rotary driving mechanism includes a first motor 2, a driving gear shaft 29, a driven gear shaft 31, and a universal drive shaft 5, and the first motor 2 is electrically connected to the control system. The driving gear shaft 29 and the driven gear shaft 31 are both rotatably connected to the frame 1, the driving gear shaft 29 is in transmission connection with the first motor 2, and a driving gear 30 is arranged on the driving gear shaft 29. Wherein, be equipped with first band pulley 26 on the output shaft of first motor 2, be equipped with second band pulley 27 on the driving gear axle 29, be connected with hold-in range 28 between first band pulley 26 and the second band pulley 27. The first pulley 26 is driven to rotate by the first motor 2, and the second pulley 27, the driving gear shaft 29 and the driving gear 30 are driven to rotate by the transmission of the synchronous belt 28.
The driven gear shafts 31 are three, the driven gear shafts 31 are provided with driven gears 32, and the driven gears 32 are meshed with the driving gears 30. When the driving gear 30 rotates, the three driven gears 32 are driven to synchronously rotate in the same rotation direction and at the same speed. The three driven gear shafts 31 are respectively in one-to-one correspondence with the three roller shafts 41. The driven gear shaft 31 is connected with the corresponding rolling wheel shaft 41 through the universal transmission shaft 5.
The feed drive mechanism is used for driving the three roller mounting blocks 8 to synchronously move along the radial direction of the fixed disc 22. The feeding driving mechanism comprises a movable ring 10 and a transmission fork 12, wherein the movable ring 10 is sleeved on the outer side of the fixed disc 22 and can slide along the axial direction of the fixed disc 22. The rolling wheel mounting block 8 is provided with a first inclined plane, and the inner side of the movable ring 10 is provided with a second inclined plane corresponding to the first inclined plane; the first inclined surface is in contact with the second inclined surface.
A reset mechanism is arranged between the rolling wheel mounting block 8 and the frame 1. The reset mechanism comprises a reset spring rod 14 connected with the rolling wheel mounting block 8 and a fixed plate 13 arranged on the frame 1 and corresponding to the rolling wheel mounting block 8, wherein the reset spring rod 14 is arranged along the radial direction of the fixed disc 22. The fixed plate 13 is located outside the circumference of the movable ring 10. One end of the reset spring rod 14 is connected with the rolling wheel mounting block 8, and a through groove for the reset spring rod 14 to pass through is formed in the rolling wheel mounting block 8; the other end of the reset spring rod 14 is a free end, the reset spring rod 14 passes through the fixed plate 13, and a reset spring 15 is arranged between the free end of the reset spring rod 14 and the fixed plate 13. The return spring 15 applies an elastic force to the roller mounting block 8 along the radial outer side of the fixed disk 22 for return of the roller mounting block 8.
The drive fork 12 is rotatably connected to the frame 1. Wherein, be equipped with articulated seat 11 on the frame 1, drive fork 12 rotates to be connected on articulated seat 11. One end of the transmission fork 12 is a driving connecting end which is connected with the axial driving device; the other end of the transmission fork 12 is a transmission connecting end, a fixed shaft 24 is arranged on the transmission connecting end, a sliding groove 25 corresponding to the fixed shaft 24 is arranged on the outer side of the movable ring 10, the sliding groove 25 is positioned on two horizontal sides of the movable ring 10, the fixed shaft 24 extends into the sliding groove 25, and the fixed shaft 24 can slide in the sliding groove 25.
The axial driving device comprises a rotary connecting base 16, a rotary seat 23, a second motor 17, a screw rod 18 and a screw rod sleeve 19, wherein the second motor 17 is electrically connected with the control system. The rotary connection base 16 is provided on the frame 1, and the rotary seat 23 is rotatably connected to the rotary connection base 16. The rotating seat 23 is provided with a second motor 17, and the output shaft of the second motor 17 is connected with a screw rod 18; one end of the screw rod sleeve 19 is hinged with a driving connection end on the transmission fork 12, a threaded hole matched with the screw rod 18 is formed in the screw rod sleeve 19, the screw rod 18 is connected in the threaded hole on the screw rod sleeve 19, and the screw rod 18 is in threaded connection with the screw rod sleeve 19.
The clamping die feeding device 6 is located at one side of the frame 1, the clamping die feeding device 6 is used for clamping the pipe fitting 20 and driving the pipe fitting 20 to move, and the pipe fitting 20 can rotate around the central axis of the pipe fitting 20 after being clamped. The clamping die feeding mechanism comprises a servo moving device 45 and a clamping cylinder 46 arranged on the servo moving device 45. In the present application, the servo moving device 45 is a prior art, the private clothes moving device is electrically connected with the control system, and the servo moving device 45 is used for driving the clamping cylinder 46 to move along a straight line. A first clamping plate 47 and a second clamping plate 52 are respectively arranged at two ends of the clamping cylinder 46, a first clamping wheel frame 48 is arranged on the first clamping plate 47, and two first clamping wheels 49 are rotatably connected to the first clamping wheel frame 48; the second clamping plate 52 is provided with a second clamping wheel frame 50, the second clamping wheel frame 50 is rotatably connected with a second clamping wheel 51 corresponding to the first clamping wheel 49, and the second clamping wheel frame 50 is provided with a first clamping wheel 49.
The floating core rod mechanism 7 includes a movable core rod 21; during the processing of the pipe 20, the core rod 21 is inserted into the pipe 20. The floating core rod mechanism 7 further comprises a core rod seat 39, a guide shaft 40 and a guide rail 33, wherein the guide rail 33 is fixedly arranged on the frame 1, and the guide rail 33 is connected with a sliding seat 34 in a sliding manner. The fixed disc 22 is provided with a guide shaft 40, the guide shaft 40 is arranged along the axial direction of the fixed disc 22, the core rod seat 39 is slidably connected to the guide shaft 40, one end of the core rod 21 is rotatably connected to the core rod seat 39 through a bearing, and the core rod 21 can rotate around the central axis of the core rod 21. Core rod 21 is disposed parallel to guide shaft 40, and core rod 21 is located between three rolling wheels 9. The core rod seat 39 is provided with a contact shaft 42, the sliding seat 34 is provided with a contact induction switch 37 corresponding to the contact shaft 42, and the contact induction switch 37 is electrically connected with the control system. In the present application, the contact sensing switch 37 is a conventional technology.
The sliding seat 34 is provided with a cylinder mounting seat 35 on one side far away from the core rod seat 39, the cylinder mounting seat 35 is fixedly arranged on the frame 1, a floating positioning cylinder 36 is arranged on the cylinder mounting seat 35, a piston rod of the floating positioning cylinder 36 is connected with the sliding seat 34, and the sliding seat 34 is driven to move along the guide rail 33 through the floating positioning cylinder 36.
The sliding seat 34 is connected with a positioning adjusting screw, the positioning adjusting screw is connected to the sliding seat 34 through threads, and one end of the positioning adjusting screw faces the frame 1. The mandrel 21 is provided with a positioning step surface 53.
In the present application, when the pipe 20 is subjected to the grooving process, the processing method is as follows:
step 1), clamping the pipe through the clamping die feeding device 6, placing the pipe between the first clamping wheel 49 and the second clamping wheel 51 during clamping, and then driving the first clamping wheel 49 and the second clamping wheel 51 to close to each other and clamping the pipe by the clamping cylinder 46.
The two first clamping wheels 49 and the second clamping wheels 51 clamp the outer side of the pipe fitting from three directions, and after the pipe fitting is clamped, the pipe fitting can rotate around the central axis of the pipe fitting due to the fact that the first clamping wheels 49 and the second clamping wheels 51 can rotate, but the pipe fitting cannot move around the axial direction of the pipe fitting under the condition that the servo moving device 45 is not started.
Step 2), the piston rod on the floating positioning cylinder 36 extends out and drives the sliding seat 34 to move to the first working position.
Step 3), driving the pipe fitting to move through a servo moving device 45 on the clamping die feeding device 6 and enabling the pipe fitting to extend between the three rolling wheels 9, and inserting a core rod 21 from one end of the pipe fitting; as the pipe continues to extend in, the end of the pipe abuts against the limit step surface on the core rod 21 and pushes the core rod 21 and the core rod seat 39 to move toward the sliding seat 34; when the contact shaft 42 on the mandrel holder 39 moves to be in contact with the contact induction switch 37 on the sliding seat 34, the contact induction switch 37 is triggered and sends a trigger signal to the control system, and the control system controls the servo moving device 45 to stop moving; the piston rod on the floating positioning cylinder 36 is then retracted and drives the slide block 34 back to the second operating position, causing the contact sensing switch 37 to move away from the contact shaft 42.
When the sliding seat 34 retreats to the second working position, a certain interval is reserved between the contact induction switch 37 and the contact shaft 42 on the sliding seat 34, the interval is 1-2mm, so that the core rod 21 is in a floating state in the axial direction, and the core rod 21 and the pipe fitting have a certain floating space in the axial direction, so that the pipe fitting has a certain front-back extending space in the processing process.
Step 4), the rolling wheel 9 is driven to move in a feeding way towards the center direction of the fixed disc 22 by a feeding driving mechanism, and the specific method is as follows: the second motor 17 drives the screw rod 18 to rotate, drives the screw rod sleeve 19 to move along the axial direction of the screw rod 18 and pushes the transmission fork 12 to rotate, and drives the movable ring 10 to move along the axial direction of the fixed disc 22 when the transmission fork 12 rotates; in the moving process, the movable ring 10 drives the three rolling wheel mounting blocks 8 to move towards the center direction of the fixed disc 22 simultaneously under the action of the first inclined plane and the second inclined plane, so that the three rolling wheels 9 compress the outer side of the pipe fitting.
Step 5), the three rolling wheels 9 are driven to synchronously rotate through the rotary driving mechanism, the rolling wheels 9 are driven to continuously move towards the center direction of the fixed disc 22 through the feeding driving mechanism in the rotating process of the rolling wheels 9, and the outer side of the pipe fitting forms a groove structure under the rolling action of the rolling wheels 9.
In the step, the rolling wheel 9 is driven to rotate by the rotation of the rolling wheel 9, and the rolling wheel 9 actively rotates; in the process of rotating the pipe, the core rod 21 synchronously rotates along with the pipe, and the clamping die feeding device 6 plays an auxiliary supporting role on one end of the pipe.
Step 6), after the groove rotation processing is completed, the second motor 17 drives the screw rod 18 to reversely rotate and reset the movable ring 10, and the rolling wheel 9 resets and loosens the pipe fitting under the action of the reset mechanism; the servo moving device 45 drives the pipe fitting to withdraw from between the three rolling wheels 9, so that the rotary groove processing of the pipe fitting is completed.
In the application, the rolling wheel 9 is driven to rotate by the rotary driving mechanism, the pipe fitting is driven to rotate by the rotation of the rolling wheel 9, and the rolling wheel 9 actively rotates to be active power; the three rolling wheels 9 act on the pipe simultaneously, so that rolling friction is guaranteed between the rolling wheels 9 and the surface of the pipe, sliding friction cannot be generated between the rolling wheels 9 and the surface of the pipe, falling of chip powder on the surface of the pipe in the processing process is effectively reduced, and difficulty in cleaning processing chips is reduced; meanwhile, as rolling friction is adopted between the rolling wheel 9 and the outer surface of the pipe fitting, the scratch of the rolling wheel 9 on the surface of the pipe fitting is reduced, and the smoothness of the machined surface of the pipe fitting is improved.
During the processing of the pipe fitting, the core rod 21 is inserted into the pipe fitting, so that a good supporting effect is achieved on the pipe fitting, and the processing precision is improved; the core rod 21 is in a floating state during processing, so that the pipe fitting has a certain floating space in the axial direction, and the pipe fitting has a certain front-back extension space during processing.
The present application is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present application can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present application fall within the scope of the present application.
Claims (8)
1. A pipe fitting spiral groove machining device, comprising:
the machine frame is provided with a fixed disc, three rolling wheel mounting blocks are connected to the fixed disc in a sliding manner, and the rolling wheel mounting blocks can move along the radial direction of the fixed disc; the rolling wheel mounting block is rotationally connected with a rolling wheel;
the rotary driving mechanism is simultaneously connected with the three rolling wheels and is used for driving the three rolling wheels to synchronously rotate;
the feeding driving mechanism is used for driving the three rolling wheel mounting blocks to synchronously move along the radial direction of the fixed disc;
the clamping die feeding device is used for clamping the pipe fitting and driving the pipe fitting to move, and the pipe fitting can rotate around the central axis of the pipe fitting after being clamped.
A floating mandrel mechanism comprising a movable mandrel; the pipe is processed by inserting a mandrel into the pipe.
2. The pipe fitting rotary groove machining device according to claim 1, wherein the rotary driving mechanism comprises a first motor, a driving gear shaft, a driven gear shaft and a universal transmission shaft, the driving gear shaft and the driven gear shaft are both rotatably connected to the frame, the driving gear shaft is in transmission connection with the first motor, and a driving gear is arranged on the driving gear shaft;
the driven gear shafts are provided with three driven gears, and the driven gears are meshed with the driving gears; the rolling wheel mounting block is rotationally connected with a rolling wheel shaft, and the rolling wheel is arranged on the rolling wheel shaft; the three driven gear shafts are respectively in one-to-one correspondence with the three rolling wheel shafts; the driven gear shaft is connected with the corresponding rolling wheel shaft through a universal transmission shaft.
3. The pipe fitting rotary groove machining device according to claim 2, wherein the feeding driving mechanism comprises a movable ring and a transmission fork, and the movable ring is sleeved on the outer side of the fixed disc and can slide along the axial direction of the fixed disc; the rolling wheel mounting block is provided with a first inclined plane, and the inner side of the movable ring is provided with a second inclined plane corresponding to the first inclined plane; the first inclined surface is contacted with the second inclined surface; a reset mechanism is arranged between the rolling wheel mounting block and the frame;
the transmission fork is rotationally connected to the frame, one end of the transmission fork is a driving connecting end, and the driving connecting end is connected with the axial driving device; the other end of the transmission fork is a transmission connecting end, a fixed shaft is arranged on the transmission connecting end, a chute corresponding to the fixed shaft is arranged on the outer side of the movable ring, and the fixed shaft extends into the chute;
the axial driving device comprises a rotary connecting base, a rotary seat, a second motor, a screw rod and a screw rod sleeve, wherein the rotary connecting base is arranged on the frame, and the rotary seat is rotationally connected to the rotary connecting base; the rotating seat is provided with a second motor, and the output shaft of the second motor is connected with a screw rod; one end of the screw rod sleeve is hinged with a driving connecting end on the transmission fork, a threaded hole matched with the screw rod is formed in the screw rod sleeve, and the screw rod is connected in the threaded hole on the screw rod sleeve.
4. A pipe fitting rotary groove machining device according to claim 3, wherein the reset mechanism comprises a reset spring rod connected with the rolling wheel mounting block and a fixed plate which is arranged on the frame and corresponds to the rolling wheel mounting block, and the fixed plate is positioned on the outer side of the circumference of the movable ring;
one end of the reset spring rod is connected with the rolling wheel mounting block, the other end of the reset spring rod is a free end, the reset spring rod penetrates through the fixing plate, and a reset spring is arranged between the free end of the reset spring rod and the fixing plate.
5. The pipe fitting rotary groove machining device according to claim 3, wherein the clamping die feeding mechanism comprises a servo moving device and a clamping cylinder arranged on the servo moving device, a first clamping plate and a second clamping plate are respectively arranged at two ends of the clamping cylinder, a first clamping wheel frame is arranged on the first clamping plate, and a first clamping wheel is rotatably connected to the first clamping wheel frame; the second clamping plate is provided with a second clamping wheel frame, and the second clamping wheel frame is rotationally connected with a second clamping wheel corresponding to the first clamping wheel.
6. The pipe fitting rotary groove machining device according to claim 5, wherein the floating mandrel mechanism further comprises a mandrel holder, a guide shaft and a guide rail, and the guide rail is connected with a sliding seat in a sliding manner;
the fixed disc is provided with a guide shaft, the guide shaft is arranged along the axial direction of the fixed disc, the mandrel holder is connected to the guide shaft in a sliding manner, one end of the mandrel is rotationally connected to the mandrel holder, the mandrel is arranged in parallel with the guide shaft, and the mandrel is positioned among the three rolling wheels; the core rod seat is provided with a contact shaft, and the sliding seat is provided with a contact induction switch corresponding to the contact shaft;
a cylinder mounting seat is arranged on one side of the sliding seat away from the core rod seat, a floating positioning cylinder is arranged on the cylinder mounting seat, and a piston rod of the floating positioning cylinder is connected with the sliding seat;
the core rod is provided with a positioning step surface.
7. The pipe fitting spiral groove machining device according to claim 6, wherein the sliding seat is connected with a positioning adjusting screw, the positioning adjusting screw is connected to the sliding seat in a threaded mode, and one end of the positioning adjusting screw faces the frame.
8. A pipe fitting rotary groove machining method based on the pipe fitting rotary groove machining device of claim 6, which is characterized by comprising the following specific steps:
step 1), clamping a pipe fitting through a clamping die feeding device, placing the pipe fitting between a first clamping wheel and a second clamping wheel during clamping, and driving the first clamping wheel and the second clamping wheel to be close to each other by a clamping cylinder to clamp the pipe fitting;
step 2), a piston rod on the floating positioning cylinder stretches out and drives the sliding seat to move to a first working position;
step 3), driving the pipe fitting to move through a servo moving device on the clamping die feeding device, enabling the pipe fitting to extend between the three rolling wheels, and inserting the core rod from one end of the pipe fitting; along with the continuous extension of the pipe fitting, the end part of the pipe fitting props against the limit step surface on the core rod and pushes the core rod and the core rod seat to move towards the direction of the sliding seat; when the contact shaft on the core rod seat moves to be in contact with the contact induction switch on the sliding seat, the contact induction switch is triggered and sends a trigger signal to the control system, and the control system controls the servo moving device to stop moving; then a piston rod on the floating positioning cylinder is retracted and drives the sliding seat to retreat to a second working position, so that the contact induction switch is far away from the contact shaft;
step 4), driving the rolling wheel to move in a feeding way towards the center direction of the fixed disc through the feeding driving mechanism, wherein the specific method is as follows: the screw rod is driven to rotate through the second motor, the screw rod sleeve is driven to move along the axial direction of the screw rod and push the transmission fork to rotate, and the movable ring is driven to move along the axial direction of the fixed disc when the transmission fork rotates; in the moving process of the movable ring, under the action of the first inclined plane and the second inclined plane, the three rolling wheel mounting blocks are driven to move towards the center direction of the fixed disc at the same time, so that the three rolling wheels compress the outer side of the pipe fitting;
step 5), driving the three rolling wheels to synchronously rotate through the rotary driving mechanism, and driving the rolling wheels to continuously move towards the center direction of the fixed disc through the feeding driving mechanism in the rotating process of the rolling wheels, so that the outer side of the pipe fitting forms a groove structure under the rolling action of the rolling wheels;
step 6), after the processing of the rotary groove is completed, the second motor drives the screw rod to reversely rotate and enables the movable ring to reset, and the rolling wheel resets and loosens the pipe fitting under the action of the reset mechanism; the servo moving device drives the pipe fitting to withdraw from among the three rolling wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960742.8A CN116871376A (en) | 2023-07-31 | 2023-07-31 | Pipe fitting rotary groove machining device and machining method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960742.8A CN116871376A (en) | 2023-07-31 | 2023-07-31 | Pipe fitting rotary groove machining device and machining method thereof |
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| CN202310960742.8A Pending CN116871376A (en) | 2023-07-31 | 2023-07-31 | Pipe fitting rotary groove machining device and machining method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564144A (en) * | 2024-01-16 | 2024-02-20 | 山东朝日不锈钢有限公司 | Core rod pull rod supporting device for pipe bending machine and method thereof |
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2023
- 2023-07-31 CN CN202310960742.8A patent/CN116871376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564144A (en) * | 2024-01-16 | 2024-02-20 | 山东朝日不锈钢有限公司 | Core rod pull rod supporting device for pipe bending machine and method thereof |
| CN117564144B (en) * | 2024-01-16 | 2024-04-05 | 山东朝日不锈钢有限公司 | Core rod pull rod supporting device for pipe bending machine and method thereof |
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