CN110315129B - Metal pipe fitting cutting device - Google Patents
Metal pipe fitting cutting device Download PDFInfo
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- CN110315129B CN110315129B CN201910686541.7A CN201910686541A CN110315129B CN 110315129 B CN110315129 B CN 110315129B CN 201910686541 A CN201910686541 A CN 201910686541A CN 110315129 B CN110315129 B CN 110315129B
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- cutting
- metal pipe
- clamping
- oil
- pipe fitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a metal pipe fitting cutting device which comprises a cutting mechanism, a first clamping mechanism, a second clamping mechanism, a feeding mechanism and a rack, wherein the cutting mechanism is arranged on the rack; the first clamping mechanism comprises a bidirectional screw rod, a support, a second base and a clamping part; the second clamping mechanism comprises a slewing bearing, a triangular fixing frame, a clamping tooth block, a connecting column, a supporting seat, a pinion, a locking stud, a locking block, a second motor, a poking plate, a positioning stud and a bolt. The metal pipe fitting is always in rotary motion through the second clamping mechanism in the cutting process, and cutting points on the metal pipe fitting are ceaselessly changed in the circumferential motion, so that the phenomena of necking and burr at the same cutting point caused by notch thermal deformation and unidirectional cutting feed force are relieved. The degree of freedom of the metal pipe fitting rotating around the central shaft is only reserved through the combined clamping mode of the first clamping mechanism and the second clamping mechanism, so that the metal pipe fitting cannot generate radial run-out, and the cutting precision is improved.
Description
Technical Field
The invention relates to the field of cutting processing equipment, in particular to a metal pipe fitting cutting device, and particularly relates to a thin-wall non-deformation metal pipe fitting cutting device.
Background
The abrasive wheel cutting machine is a widely used machining device. Although the metal pipe fitting is low in price and simple to operate, when the metal pipe fitting is cut, due to the fact that the rigidity of the metal pipe fitting is low, the grinding wheel is poor in heat dissipation in the cutting process, necking and burr burrs are prone to being generated on cuts of the metal pipe fitting, the shrinkage length generated by cutting can reach one fifth of the pipe diameter, and the necking can reach one tenth of the pipe diameter.
The document with the application number of 201410324463.3 discloses a thin-wall pipe fitting cutting system, wherein a positioning rod is driven by a cylinder piston rod to move so as to clamp a pipe fitting, and a plurality of axial heat dissipation holes are formed in a cutter head; however, the cutting system can only clamp the pipe to be cut, but cannot clamp the cut part, so that the cutting point deviates to generate burr and burr; the cutting pipe fitting is fixed, so that the unidirectional cutting feeding force and the waste heat on the same cutting point are larger, and a larger necking is generated; the axial heat dissipation holes on the cutter head are favorable for heat dissipation, but do not directly dissipate heat of the cutting edge, and the heat dissipation effect is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a metal pipe fitting cutting device.
The technical scheme for solving the technical problem is to provide a metal pipe cutting device, which is characterized by comprising a cutting mechanism, a first clamping mechanism, a second clamping mechanism, a feeding mechanism and a rack;
the frame comprises an upper wing plate, a lower wing plate and a side plate; the upper wing plate and the lower wing plate are fixed on two sides of the side plate; the side plate is provided with a positioning hole for the metal pipe fitting to pass through; the side plate is provided with a notch communicated with the positioning hole and used for the reciprocating motion of a transmission shaft of the cutting mechanism; the cutting mechanism is used for cutting the metal pipe fitting; the feeding mechanism is used for driving the cutting mechanism to realize reciprocating motion;
the first clamping mechanism comprises a bidirectional screw rod, a support, a second base and a clamping part; the second base is fixed on the upper wing plate; the support is fixed on the second base; the bidirectional screw rod is rotatably arranged on the support; the thread parts on the two sides of the bidirectional screw rod are respectively in threaded connection with a clamping part;
the second clamping mechanism comprises a slewing bearing, a triangular fixing frame, a clamping tooth block, a connecting column, a supporting seat, a pinion, a locking stud, a locking block, a second motor, a poking plate, a positioning stud and a bolt; the supporting seat is fixed on the lower wing plate; the inner ring of the slewing bearing is fixedly connected with the supporting seat; a plurality of connecting columns are uniformly fixed on the end surface of the outer ring of the slewing bearing through bolts; the connecting columns sequentially penetrate through the kidney-shaped holes of the respective shifting plates, the through holes of the clamping tooth blocks and the mounting holes of the triangular fixing frames, and the shifting plates, the clamping tooth blocks and the triangular fixing frames are mounted in the connecting columns through the heads of the bolts; one end of the clamping tooth block is buckled on the poking plate, and the other end of the clamping tooth block is used for clamping the metal pipe fitting; the second motor is fixed on the supporting seat, and a pinion meshed with the outer ring of the slewing bearing is fixed on an output shaft of the second motor; the locking block is rotatably arranged on the end face of the outer ring of the slewing bearing through a positioning stud and can rotate relative to the positioning stud; the locking stud is installed on the locking block in a threaded mode, and one end of the locking stud can be in contact with the poking plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the metal pipe fitting is always in rotary motion through the second clamping mechanism in the cutting process, the cutting points on the metal pipe fitting are ceaselessly changed in the circumferential motion, the phenomena of necking and burr at the same cutting point caused by notch thermal deformation and unidirectional cutting feed force are relieved, the damage of the pipe fitting cutting point is reduced, and the cutting precision is improved.
2. The combination clamping mode through first clamping mechanism and second clamping mechanism only remains the degree of freedom that metal pipe spare rotated around the center pin, and the cutting piece cuts metal pipe spare between first clamping mechanism and second clamping mechanism moreover, makes metal pipe spare can not produce the runout, is favorable to improving the stability of metal pipe spare and excision piece in the cutting process to improve metal pipe spare's cutting quality, further improved cutting accuracy.
3. The cutting blade and the transmission shaft are provided with radial through holes, when the cutting blade rotates at a high speed, due to the fact that the linear speeds of the inner diameter and the outer diameter are different, air pressures at two ends of the inner diameter and the outer diameter of the cutting blade are different to form an air pressure difference, air flows in the through holes of the cutting blade, and the heat dissipation of the cutting blade and the heat attenuation phenomenon of the cutting blade are facilitated; and the through hole leads to the cutting edge, can directly dispel the heat to the cutting edge, has improved the radiating rate, has prolonged the life of cutting piece.
4. Because the first clamping mechanism is arranged on the lower surface of the upper wing plate of the frame, the two roller frames form a downward opening, and the metal pipe fittings can be cut and quickly blanked; and the metal pipe fitting to be cut is still clamped by the second clamping mechanism, and continuous cutting can be carried out only by adjusting the position of the metal pipe fitting, so that the cutting efficiency is improved.
5. Due to the blocking of the side plates of the frame, the cuttings generated by cutting cannot influence the movement of the cutting mechanism.
Drawings
FIG. 1 is an axial schematic view of the overall construction of the present invention;
FIG. 2 is an axial view of another angular monolithic structure of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention;
FIG. 4 is a schematic structural view of the cutting mechanism of the present invention;
FIG. 5 is a partial cross-sectional view of the drive shaft and cutting blade of the present invention;
FIG. 6 is a schematic structural view of a first clamping mechanism of the present invention;
FIG. 7 is a schematic structural view of a second clamping mechanism of the present invention;
FIG. 8 is an exploded view of a second clamping mechanism of the present invention;
FIG. 9 is a schematic structural view of the feed mechanism of the present invention;
FIG. 10 is a schematic structural view of the housing of the present invention;
in the figure: 1. a cutting mechanism; 2. a first clamping mechanism; 3. a second clamping mechanism; 4. a feed mechanism; 5. a frame;
11. a drive shaft; 12. a limit nut; 13. cutting the slices; 14. a speed reducer; 15. a first motor; 16. a support frame; 17. a first slider; 18. a first base; 111. a first radial through hole; 112. a cavity; 131. a second radial through hole;
21. a roller; 22. a roller frame; 23. a second slider; 24. a lead screw nut; 25. a bidirectional lead screw; 26. a support; 27. a second base;
31. a slewing bearing; 32. a triangular fixing frame; 33. clamping the tooth block; 34. connecting columns; 35. a supporting seat; 36. a pinion gear; 37. locking the stud; 38. a locking block; 39. a second motor; 310. a poking plate; 311. positioning the stud; 312. a bolt;
41. a hydraulic cylinder; 42. an oil tank; 43. a manual directional control valve; 431. an oil inlet; 432. a first oil port, 433 and a second oil port; 434. a second oil return port; 435. a first oil return port; 44. a speed regulating valve; 45. a third motor; 46. an oil pump; 47. a support;
51. an upper wing plate; 52. a lower wing plate; 53. a side plate; 531. positioning holes; 532. a notch.
Detailed Description
Specific examples of the present invention are given below. The specific examples are only intended to illustrate the invention in further detail and do not limit the scope of protection of the claims of the present application.
The invention provides a metal pipe fitting cutting device (a cutting device for short, see fig. 1-10), which is characterized by comprising a cutting mechanism 1, a first clamping mechanism 2, a second clamping mechanism 3, a feeding mechanism 4 and a frame 5; the first clamping mechanism 2 and the second clamping mechanism 3 are self-centering clamping mechanisms; the rack 5 is Z-shaped and comprises an upper wing plate 51, a lower wing plate 52 and a side plate 53; the upper wing plate 51 and the lower wing plate 52 are fixed on two sides of the side plate 53; the side plate 53 is provided with a positioning hole 531 for passing the metal pipe; the side plate 53 is provided with notches 532 communicated with the positioning hole 531 (in this embodiment, two notches 532 are linearly arranged on two sides of the positioning hole 531 or the notch 532 is arranged on one side of the positioning hole 531), and the notches 532 are used for reciprocating motion of the transmission shaft 11 of the cutting mechanism 1; the cutting mechanism 1 is arranged on the lower wing plate 52 and is used for cutting the metal pipe fitting; the feeding mechanism 4 is used for driving the cutting mechanism 1 to realize reciprocating motion;
the first clamping mechanism 2 comprises a bidirectional screw rod 25, a support 26, a second base 27 and a clamping part; the second base 27 is fixed on the lower surface of the upper wing plate 51; the support 26 is fixed on the second base 27; the optical axis part of the bidirectional screw 25 is rotatably mounted on the support 26 through a bearing, can rotate relative to the support 26 through external force and cannot move linearly relative to the support 26; the threaded parts on both sides of the bidirectional screw 25 are respectively connected with clamping parts through threads (in the embodiment, the center position of the optical axis part of the bidirectional screw 25 is rotatably arranged on the support 26, and the two clamping parts are symmetrical about the support 26); the thread parts on both sides of the bidirectional screw rod 25 are opposite in turning direction, and when the bidirectional screw rod 25 rotates, the two clamping parts move towards or away from each other;
the second clamping mechanism 3 comprises a slewing bearing 31, a triangular fixing frame 32, a clamping tooth block 33, a connecting column 34, a supporting seat 35, a pinion 36, a locking stud 37, a locking block 38, a second motor 39, a poking plate 310, a positioning stud 311 and a bolt 312; the supporting seat 35 is fixed on the upper surface of the lower wing plate 52; the inner ring of the slewing bearing 31 is fixedly connected with the supporting seat 35; the center hole of the dial plate 310 is fitted to the outside of the inner ring of the slewing bearing 31 and is rotatable with respect to the inner ring of the slewing bearing 31; a plurality of connecting columns 34 are uniformly fixed on the end surface of the outer ring of the slewing bearing 31 through bolts 312 (in this embodiment, three connecting columns 34 are circumferentially and uniformly distributed on the end surface of the outer ring of the slewing bearing 31); the connecting columns 34 sequentially penetrate through the kidney-shaped holes of the respective shifting plates 310, the through holes of the clamping tooth blocks 33 and the mounting holes of the triangular fixing frames 32, and the shifting plates 310, the clamping tooth blocks 33 and the triangular fixing frames 32 are mounted in the connecting columns 34 through the heads of the bolts 312, the kidney-shaped holes of the shifting plates 310 can realize the micro rotation of the shifting plates 310 relative to the connecting columns 34, and the clamping tooth blocks 33 can rotate relative to the respective connecting columns 34; one end of the clamping tooth block 33 is fastened on the shifting plate 310, and the other end of the clamping tooth block is used for clamping a metal pipe (in the embodiment, three clamping tooth blocks 33 are uniformly distributed on the shifting plate 310 in the circumferential direction); the second motor 39 is fixed on the supporting seat 35, and a pinion 36 meshed with the outer ring of the slewing bearing 31 is fixed on the output shaft of the second motor; the locking block 38 is rotatably mounted on the end surface of the outer ring of the slewing bearing 31 through a positioning stud 311, and the locking block 38 can rotate relative to the positioning stud 311; the locking stud 37 is installed on the locking block 38 in a threaded manner, one end of the locking stud 37 can be in contact with the toggle plate 310, and the contact position of the locking stud 37 and the toggle plate 310 is adjusted by rotating the locking block 38; the pipe diameters of the metal pipe fittings are different, so that the closing degrees of the three clamping tooth blocks 33 are different, the rotating angles of the poking plates 310 are different, and the optimal contact positions of the locking studs 37 and the poking plates 310 are adjusted by rotating the locking blocks 38, so that the poking plates 310 are adjusted in a rotating mode;
each clamping part comprises a roller 21, a roller frame 22, a second slide block 23 and a lead screw nut 24; the second sliding block 23 is mounted on the threaded part of the bidirectional screw 25 through a screw nut 24 and embedded in a second base 27, and the second sliding block 23 can slide in the second base 27 along the bidirectional screw 25; a roller frame 22 is fixed at one end of the second slide block 23 close to the support 26, a pair of rollers 21 are rotatably mounted on the roller frame 22, and the rollers 21 can rotate relative to the roller frame 22 through the matching of shafts and bearings; the first clamping mechanism 2 clamps the metal pipe fitting through the four rollers 21, and the four rollers 21 rotate together when the metal pipe fitting rotates, so that the metal pipe fitting is supported, and the rotating motion of the metal pipe fitting is not influenced.
The straight line formed by the center point of the distance between the two clamping parts and the circle center of the slewing bearing 31 passes through the positioning hole 531 and is perpendicular to the plane of the cutting blade 13. That is, the straight line formed by the center point of the distance between the two pairs of rollers 21 and the center of the rotary support bearing 31 passes through the positioning hole 531 and is perpendicular to the plane of the cutting blade 13.
The cutting mechanism 1 comprises a transmission shaft 11, a limit nut 12, a cutting blade 13, a speed reducer 14, a first motor 15, a support frame 16, a first sliding block 17 and a first base 18; the first base 18 is fixed on one side of the lower wing plate 52 close to the side plate 53; a first sliding block 17 is arranged in the first base 18, the first sliding block 17 and the first base form a moving pair, and the first sliding block 17 can slide in the first base 18; a support frame 16 is fixed on the first sliding block 17; a speed reducer 14 and a first motor 15 are fixed on the support frame 16; an output shaft of the first motor 15 is fixedly connected with an input shaft of the speed reducer 14 through a coupling (not shown in the figure), the output shaft of the speed reducer 14 is fixedly connected with one end of the transmission shaft 11 through the coupling (not shown in the figure), and the other end of the transmission shaft 11 penetrates through the side plate 53 and is fixed with the cutting blade 13 through interference fit; the cutting blade 13 and the main body of the cutting mechanism 1 are respectively positioned at two sides of the side plate 53; the limiting nut 12 is arranged at the thread at the end part of the transmission shaft 11, one side of the cutting blade 13 is limited by the shaft shoulder of the transmission shaft 11, and the other side of the cutting blade is limited by the limiting nut 12;
preferably, the cutting blade 13 has a plurality of second radial through holes 131 radially and uniformly distributed and pointing to the center of the cutting blade 13, which is beneficial to heat dissipation of the cutting blade 13;
preferably, the driving shaft 11 has a cavity 112 at one end, and the cutting blade 13 is installed at the position of the driving shaft 11 having the cavity 112; the position of the transmission shaft 11 where the cutting blade 13 is arranged is provided with a first radial through hole 111 communicated with a second radial through hole 131 on the cutting blade 13; the number of the first radial through holes 111 is the same as that of the second radial through holes 131; when the cutting blade 13 rotates at a high speed, air pressure difference is formed due to different linear velocities of two ends of the second radial through hole 131, so that air flows in a channel formed by the second radial through hole 131, the first radial through hole 111 and the cavity 112, and heat dissipation of the cutting blade 13 is facilitated;
preferably, the outer surface of the end of the transmission shaft 11 having the cavity 112 is provided with threads, and the thread position is not overlapped with the position having the first radial through hole 111, i.e. the position having the first radial through hole 111 is not threaded, for the installation with the limit nut 12.
The feeding mechanism 4 can adopt a hydraulic feeding mechanism and comprises a hydraulic cylinder 41, an oil tank 42, a manual reversing valve 43, a speed regulating valve 44, a third motor 45, an oil pump 46 and a bracket 47; the oil tank 42 is fixed on the upper surface of the upper wing plate 51; the oil outlet of the oil tank 42 is connected with the oil inlet of the oil pump 46 through a pipeline; an oil outlet of the oil pump 46 is connected with the manual reversing valve 43 through a pipeline, a speed regulating valve 44 is installed on the pipeline, and the speed regulating valve 44 is used for controlling the feeding speed of the push rod of the hydraulic cylinder 41; the third motor 45 is mounted on the oil pump 46, and an output shaft is connected with an input shaft of the oil pump 46 through a coupling (not shown in the figure); the manual reversing valve 43 is connected with the hydraulic cylinder 41 through a pipeline; the hydraulic cylinder 41 is fixed on the first base 18 through a bracket 47, a push rod of the hydraulic cylinder 41 is fixedly connected with the support frame 16, and the reciprocating linear motion of the first sliding block 17 in the first base 18 is realized through the reciprocating motion of the push rod of the hydraulic cylinder 41;
preferably, the oil outlet of the oil pump 46 is connected with the oil inlet 431 of the manual reversing valve 43 through a pipeline, and the speed regulating valve 44 is installed on the pipeline; a first oil port 432 and a second oil port 433 of the manual reversing valve 43 are respectively connected with two oil ports of the hydraulic cylinder 41 through pipelines, a first oil return port 435 of the manual reversing valve 43 is connected with an oil inlet of the oil tank 42 through a pipeline, a second oil return port 434 is connected with a pipeline between the first oil return port 435 and the oil inlet of the oil tank 42 through a pipeline, and the direction of an oil circuit can be changed by adjusting the manual reversing valve 43; according to the different movement directions of the push rod of the hydraulic cylinder 41, the oil path flowing through the first oil port 432 and the second oil port 433 has different directions, when the push rod of the hydraulic cylinder 41 is retracted, the oil path flows out from the first oil port 432 and returns to the oil tank 42 through the second oil port 433 and the second oil return port 434; when the push rod of the hydraulic cylinder 41 extends, the oil way discharges oil from the second oil port 433 and returns to the oil tank through the first oil port 432 and the first oil return port 435;
a dovetail groove is formed in the first base 18 and used for sliding the first sliding block 17; the first sliding block 17 is in a dovetail shape and is matched with a dovetail groove on the first base 18. A dovetail groove is formed in the second base 27 and used for sliding the second sliding block 23; the second sliding block 23 is in a dovetail shape and is matched with a dovetail groove on the second base 27.
The center of the toggle plate 310 is provided with a through hole matched with the inner ring of the slewing bearing 31; the edge of the toggle plate 310 is provided with a plurality of support legs (three in this embodiment) which are uniformly distributed in the axial direction, and each support leg is provided with a kidney-shaped hole for installing the connecting column 34 and a notch for clamping the tooth block 33; one end of the clamping tooth block 33 is provided with a bent plate matched with the notch of the poking plate 310.
The end part of one end of the bidirectional screw rod 25 is provided with an inner hexagonal screw hole for inserting an inner hexagonal wrench, and a user clamps the metal pipe fitting through the inner hexagonal wrench. The head of the locking stud 37 is provided with an inner hexagonal screw hole for inserting an inner hexagonal wrench for screwing by a user.
The stop nut 12 is preferably a flange nut. The cutting blade 13 has a mounting hole at the center for fixed mounting with the transmission shaft 11. The speed reducer 14 adopts a primary speed reducer.
The first motor 15, the second motor 39 and the third motor 45 are respectively connected with an external power supply.
The diameter of the positioning hole 531 can be 10-20 mm larger than the pipe diameter of the metal pipe fitting.
The manual directional valve 43 is preferably a two-position five-way directional valve. The oil pump 46 is preferably a gear pump.
The working principle and the working process of the invention are as follows:
1. installing a metal pipe fitting: sequentially passing the metal pipe fitting through the supporting hole of the supporting seat 35, the positioning hole 531 and the four rollers 21; an inner hexagonal wrench is inserted into an inner hexagonal screw hole at the head of the locking stud 37, the inner hexagonal wrench is rotated, the locking block 38 is rotated simultaneously, the locking stud 37 is enabled to push against the shifting plate 310, so that the shifting plate 310 is pushed to rotate along the waist-shaped hole of the shifting plate, the shifting plate 310 rotates, the three clamping tooth blocks 33 rotate together relative to the connecting column 34, the metal pipe fitting is clamped, when the metal pipe fitting is clamped by the three clamping tooth blocks 33, the locking stud 37 stops rotating, and the positioning stud 311 is screwed, so that the metal pipe fitting is clamped on the second clamping mechanism 3. Then, the socket head wrench is inserted into the socket head cap screw hole at one end of the bidirectional screw rod 25, and then the socket head wrench is rotated to rotate the bidirectional screw rod 25 so as to move the two second sliders 23 in opposite directions, and when the four rollers 21 clamp the metal pipe, the socket head wrench stops rotating, so that the metal pipe is clamped on the first clamping mechanism 2.
2. Cutting the metal pipe fitting: the second motor 39 is started to rotate the pinion 36, so as to drive the outer ring of the slewing bearing 31 to rotate, and therefore the metal pipe fitting is driven to be in a rotating state all the time in the cutting process;
starting the third motor 45, pumping oil in the oil tank 42 into the hydraulic cylinder 41 by the oil pump 46, and enabling the oil path to sequentially pass through the oil inlet 431, the first oil port 432, the second oil port 433 and the second oil return port 434; rotating the handle of the speed regulating valve 44 to enlarge the valve, so that the push rod of the hydraulic cylinder 41 moves rapidly towards the cylinder body of the hydraulic cylinder 41, and the first sliding block 17 is driven to slide rapidly on the first base 18 towards the middle of the rack 5 (when in the initial position, the first sliding block 17 is positioned on one side of the first base 18 away from the middle of the rack 5, and the push rod of the hydraulic cylinder 41 extends), so that the cutting blade 13 finishes rapid feeding towards the surface of the metal pipe fitting;
starting a first motor 15 to enable a transmission shaft 11 to rotate, and driving a cutting blade 13 to rotate to cut the surface layer of the metal pipe fitting; meanwhile, the handle of the speed regulating valve 44 is rotated to reduce the size of the valve, so that the push rod of the hydraulic cylinder 41 continues to move slowly towards the cylinder body of the hydraulic cylinder 41, and the first sliding block 17 continues to be driven to slide on the first base 18, so that the cutting blade 13 finishes cutting from the outer wall to the inner wall of the metal pipe fitting.
3. Retracting the cutter: rotating the manual reversing valve 43, at this time, the oil path passes through the oil inlet 431, the second oil port 433, the first oil port 432 and the first oil return port 435 in sequence; the handle of the speed regulating valve 44 is rotated to enlarge the valve, so that the push rod of the hydraulic cylinder 41 moves rapidly in the direction back to the cylinder body of the hydraulic cylinder 41, and the first sliding block 17 is driven to slide rapidly in the direction of the first base 18 back to the middle part of the rack 5, so that the cutting blade 13 is rapidly retracted.
Rotating the inner hexagon spanner to rotate the bidirectional screw 25, and moving the two second sliding blocks 23 back to back until the four rollers 21 loosen the clamping of the cut-off part, thereby finishing blanking; rotating the socket wrench to enable the locking stud 37 to loosen the jacking of the poking plate 310, and manually rotating the poking plate 310 to enable the three clamping tooth blocks 33 to loosen the clamping of the metal pipe fitting; and then adjusting the position of the metal pipe fitting, repeating the steps and continuing to cut the metal pipe fitting.
Nothing in this specification is said to apply to the prior art.
Claims (10)
1. A metal pipe fitting cutting device is characterized by comprising a cutting mechanism, a first clamping mechanism, a second clamping mechanism, a feeding mechanism and a rack;
the frame comprises an upper wing plate, a lower wing plate and a side plate; the upper wing plate and the lower wing plate are fixed on two sides of the side plate; the side plate is provided with a positioning hole for the metal pipe fitting to pass through; the side plate is provided with a notch communicated with the positioning hole and used for the reciprocating motion of a transmission shaft of the cutting mechanism; the cutting mechanism is used for cutting the metal pipe fitting; the feeding mechanism is used for driving the cutting mechanism to realize reciprocating motion;
the first clamping mechanism comprises a bidirectional screw rod, a support, a second base and a clamping part; the second base is fixed on the upper wing plate; the support is fixed on the second base; the bidirectional screw rod is rotatably arranged on the support; the thread parts on the two sides of the bidirectional screw rod are respectively in threaded connection with a clamping part;
the second clamping mechanism comprises a slewing bearing, a triangular fixing frame, a clamping tooth block, a connecting column, a supporting seat, a pinion, a locking stud, a locking block, a second motor, a poking plate, a positioning stud and a bolt; the supporting seat is fixed on the lower wing plate; the inner ring of the slewing bearing is fixedly connected with the supporting seat; a plurality of connecting columns are uniformly fixed on the end surface of the outer ring of the slewing bearing through bolts; the connecting columns sequentially penetrate through the kidney-shaped holes of the respective shifting plates, the through holes of the clamping tooth blocks and the mounting holes of the triangular fixing frames, and the shifting plates, the clamping tooth blocks and the triangular fixing frames are mounted in the connecting columns through the heads of the bolts; one end of the clamping tooth block is buckled on the poking plate, and the other end of the clamping tooth block is used for clamping the metal pipe fitting; the second motor is fixed on the supporting seat, and a pinion meshed with the outer ring of the slewing bearing is fixed on an output shaft of the second motor; the locking block is rotatably arranged on the end face of the outer ring of the slewing bearing through a positioning stud and can rotate relative to the positioning stud; the locking stud is installed on the locking block in a threaded mode, and one end of the locking stud can be in contact with the poking plate.
2. A metal tube cutting apparatus according to claim 1, wherein said frame is Z-shaped.
3. The metal tube cutting apparatus according to claim 1, wherein each clamping portion comprises a roller, a roller frame, a second slider, and a lead screw nut; the second sliding block is arranged on the threaded part of the bidirectional screw through a screw nut and embedded in the second base; the second sliding block is fixed with a roller carrier, and a pair of rollers are rotatably arranged on the roller carrier.
4. The metal pipe cutting device according to claim 1, wherein the cutting mechanism comprises a transmission shaft, a limit nut, a cutting blade, a speed reducer, a first motor, a support frame, a first sliding block and a first base; the first base is fixed on the lower wing plate; a first sliding block is arranged in the first base, and the first sliding block and the first base form a sliding pair; a support frame is fixed on the first sliding block; a speed reducer and a first motor are fixed on the support frame; an output shaft of the first motor is fixedly connected with an input shaft of the speed reducer, the output shaft of the speed reducer is fixedly connected with one end of the transmission shaft, and the other end of the transmission shaft penetrates through the side plate and is fixed with the cutting blade; the limiting nut is arranged at the thread at the end part of the transmission shaft and used for limiting the cutting blade.
5. A metal pipe cutting device as claimed in claim 4, wherein the cutting blade has a plurality of radially and uniformly spaced second radial through holes therein to facilitate heat dissipation from the cutting blade.
6. A metal pipe cutting device as claimed in claim 5, wherein said drive shaft has a cavity formed therein at one end thereof, and the cutting blade is mounted to the drive shaft at a position where the cavity is formed; the position of the transmission shaft, which is provided with the cutting blade, is provided with a first radial through hole which is communicated with a second radial through hole on the cutting blade.
7. The metal pipe cutting device according to claim 1, wherein the edge of the poking plate is provided with a plurality of support legs which are uniformly distributed in the axial direction, and each support leg is provided with a kidney-shaped hole for mounting the connecting column and a notch for clamping the tooth block in a buckling manner; one end of the clamping tooth block is provided with a bent plate matched with the opening of the poking plate.
8. The metal pipe cutting device of claim 1, wherein the feed mechanism comprises a hydraulic cylinder, an oil tank, a manual reversing valve, a speed regulating valve, a third motor, an oil pump and a bracket; an oil outlet of the oil tank is connected with an oil inlet of the oil pump through a pipeline; the oil outlet of the oil pump is connected with a manual reversing valve through a pipeline, and a speed regulating valve is mounted on the pipeline; the third motor is arranged on the oil pump, and an output shaft of the third motor is connected with an input shaft of the oil pump; the manual reversing valve is connected with the hydraulic cylinder through a pipeline; the pneumatic cylinder passes through the support to be fixed on first base, and the push rod and the support frame of pneumatic cylinder link firmly.
9. The metal pipe cutting device according to claim 8, wherein an oil outlet of the oil pump is connected with an oil inlet of the manual reversing valve through a pipeline, and the pipeline is provided with a speed regulating valve; the first oil port and the second oil port of the manual reversing valve are respectively connected with the two oil ports of the hydraulic cylinder through pipelines, the first oil return port of the manual reversing valve is connected with the oil inlet of the oil tank through a pipeline, the second oil return port of the manual reversing valve is connected with the pipeline between the first oil return port and the oil inlet of the oil tank through a pipeline, and the direction of an oil way can be changed by adjusting the manual reversing valve.
10. The metal pipe cutting device according to claim 1, wherein a straight line formed by a center point of a distance between the two clamping portions and a center point of the slewing bearing passes through the positioning hole and is perpendicular to a plane on which the cutting blade is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686541.7A CN110315129B (en) | 2019-07-29 | 2019-07-29 | Metal pipe fitting cutting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2057123U (en) * | 1989-08-22 | 1990-05-16 | 许荡平 | Tool movable pipe cutter |
| CN2220912Y (en) * | 1995-02-22 | 1996-02-28 | 林水池 | Portable pipe cutter |
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| CN110315129A (en) | 2019-10-11 |
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