Pipe fitting turning machine tool and turning method in crane type filling arm production

Abstract

The invention discloses a pipe fitting turning machine tool and a turning method in crane type filling arm production, and relates to the field of turning machine tools, the pipe fitting turning machine tool comprises a lathe shell, a three-jaw chuck and an inner circle turning assembly are arranged in the lathe shell, the three-jaw chuck can clamp a pipe fitting and drive the pipe fitting to rotate, the inner circle turning assembly comprises a turning rod and a turning tool, and the turning rod is connected with the turning tool. A moving assembly and a chip removal assembly are further arranged in the lathe shell. The turning rod and the turning tool extend into the pipe fitting to turn the inner wall of the pipe fitting, the inner wall of the pipe fitting can be machined, the smoothness of the inner wall of the pipe fitting is improved, in the cutting process, the scraping plate continuously discharges cut chippings out of the pipe fitting, the chippings are prevented from influencing cutting of the inner wall of the pipe fitting, and the machining quality is guaranteed. The problem that chippings are difficult to discharge in the cutting machining process of the inner wall of the pipe fitting is solved, the torsional spring enables the scraping plate to abut against the inner walls of the pipe fittings with different diameters in an inclined state, the good chipping discharging effect is kept in the machining process of the pipe fittings with different diameters, and adaptability is improved.

Description

Technical Field

[0001] The present invention relates to the field of turning machine tools, and particularly to a pipe turning machine tool and a turning method in the production of a crane-type filling arm. Background Art

[0002] A turning machine tool is a machine tool used for machining rotationally symmetric workpieces. Through the rotational movement of the workpiece and the linear or curvilinear feeding movement of the cutting tool, machining of the outer circle, inner hole, end face, thread, etc. is completed, and it is widely used in the field of mechanical manufacturing. The core components of a turning machine tool include a headstock, a feeding system, a tool post, and a bed. Among them, the main shaft drives the workpiece to rotate, and the cutting tool moves along a predetermined trajectory through the tool post to remove materials. For the turning of the inner wall of a pipe, special equipment or additional devices are usually required. Such machine tools must have slender cutting tools, a high-rigidity support structure, and an accurate guiding system to cope with the vibration and deflection problems in deep-hole machining. Pipe inner wall turning machine tools often use deep-hole boring technology, and the cutting tool enters the inside of the pipe through the main shaft.

[0003] Chinese Patent CN117358957B discloses a lathe for pipe fitting processing, including a bed body. A three-jaw chuck for clamping the pipe fitting and a cutting tool for processing the pipe fitting are provided on the bed body. A central hole is opened at the center position of the chuck body of the three-jaw chuck. A clamping assembly is arranged at the middle position of the three-jaw chuck between the three movable jaws. The clamping assembly includes a connecting column, a connecting disk, and a plurality of support rods. The connecting column passes through the central hole and is connected to the chuck body. The connecting disk is fixedly connected to the end of the connecting column away from the chuck body. A cavity is opened in the connecting disk. A plurality of support rods extend from the outer wall of the connecting disk into the cavity. Connecting racks are arranged on one side of the plurality of support rods located in the cavity. A plurality of connecting gears corresponding to the connecting racks one by one are rotatably connected in the cavity of the connecting disk. The ends of the plurality of support rods on the clamping assembly are in contact with the inner wall of the pipe fitting to support the inner pipe wall of the pipe fitting and reduce the possibility of deformation during the clamping of the pipe fitting with a thin pipe wall. Chinese Patent CN102430776B discloses a device for machining pipe fittings using a lathe, including a tool post, a clamp, a V-shaped positioning block, a transition connecting plate, and a pressing pad. One end of the tool post is clamped on the chuck of the lathe main shaft. There are tool mounting holes on the circumference of one end of the tool post, and tool fixing holes perpendicular to the tool mounting holes are provided on the end face of this end of the tool post. The clamp is fixed on the transition connecting plate through a connecting plate located on the lower clamping body. The transition connecting plate is fixedly connected to the middle carriage of the lathe. The clamp includes an upper clamping body and a lower clamping body. The upper clamping body is inserted into the clamping plates at both ends of the lower clamping body and is connected through a shaft pin. The pressing pad is fixed on the inner surface of the lower clamping body through a clamping bolt. Using an ordinary lathe solves the problem of machining the inner hole at the end of a bimetal composite pipe, improves the machining efficiency, reduces the machining cost. After disassembling the present invention and then installing the small carriage, tool post system, and tailstock of the original lathe, the structure and function of the original lathe can be restored.

[0004] The above patents and prior art also have the following defects: During deep hole processing, a large amount of debris will be generated when cutting the inner wall of the pipe. The debris will be retained in the pipe. The pipe is placed horizontally, and even with coolant, the debris inside the pipe cannot be flushed out in time, causing the debris to accumulate inside the pipe. The residual chips will repeatedly rub against the rotating tool and the workpiece surface, causing scratches or grooves on the processed inner wall, significantly reducing the surface finish and possibly forming a secondary hardened damage layer. Long-term accumulation of metal chips will also form irregular obstructions on the inner wall of the pipe, interfering with the stability of subsequent tool feed and aggravating the abnormal wear of the machine tool spindle and guide rails.

[0005] Therefore, the present application provides a pipe turning machine tool and a turning method in the production of crane-type filling arms to meet the needs. Summary of the invention

[0006] The purpose of the present application is to provide a turning method for a pipe turning machine tool and a crane-type filling arm production, wherein the inner wall of the pipe is turned by extending a turning rod and a turning tool into the pipe, and the inner wall of the pipe can be processed to improve the smoothness of the inner wall of the pipe. During the cutting process, a scraper continuously discharges the cut chips out of the pipe to prevent the chips from affecting the cutting of the inner wall of the pipe, thereby ensuring the processing quality and solving the problem of the difficulty in discharging the chips during the cutting of the inner wall of the pipe. The torsion spring causes the scraper to be tilted against the inner wall of pipes of different diameters, thereby maintaining a good chip removal effect during the processing of pipes of different diameters and improving adaptability.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a pipe turning machine tool, comprising a lathe housing, wherein a three-jaw chuck and an internal turning assembly are arranged in the lathe housing, wherein the three-jaw chuck can clamp the pipe and drive the pipe to rotate, wherein the internal turning assembly comprises a turning rod and a turning tool, wherein a moving assembly and a chip removal assembly are further arranged in the lathe housing, wherein the moving assembly can drive the chip removal assembly and the internal turning assembly to move horizontally; The chip removal assembly includes a chip removal conveyor belt and a plurality of scraping units, wherein the plurality of scraping units are equidistantly arranged on the chip removal conveyor belt, and the scraping unit includes a scraper and a torsion spring. When the scraper is located at the bottom of the pipe, the torsion spring can press the end of the scraper to the bottom of the pipe. When the scraper is located below the turning rod, the torsion spring can press the end of the scraper to the bottom of the turning rod.

[0008] Preferably, a stabilizing component is further arranged inside the lathe housing. The moving component can drive the stabilizing component to move horizontally. The stabilizing component includes a single-wheel driving cylinder, a single-wheel driving plate, a single-wheel supporting frame, a stabilizing single wheel, a double-wheel driving cylinder, a double-wheel driving plate, two double-wheel supporting frames and two stabilizing double wheels. The single-wheel driving plate is fixedly installed at the output end of the single-wheel driving cylinder. The single-wheel supporting frame is fixedly installed on the single-wheel driving plate. The stabilizing single wheel is rotatably connected to the single-wheel supporting frame. The double-wheel driving plate is fixedly installed on the double-wheel driving cylinder. The double-wheel supporting frames are fixedly installed on the double-wheel driving plate. The two stabilizing double wheels are rotatably connected to the corresponding double-wheel supporting frames. The stabilizing single wheel and the turning tool are arranged on the same side of the turning rod.

[0009] Preferably, the moving component includes an inner-circle moving unit and a stabilizing moving unit. The inner-circle moving unit includes an inner-circle moving motor, an inner-circle moving screw rod, an inner-circle moving block and an inner-circle moving plate. The inner-circle moving motor is fixedly installed on the lathe housing. One end of the inner-circle moving screw rod is rotatably connected to the lathe housing. The other end of the inner-circle moving screw rod is fixedly installed at the output end of the inner-circle moving motor. The inner-circle moving block is sleeved on the inner-circle moving screw rod and is in threaded cooperation with the inner-circle moving screw rod. The inner-circle moving plate is fixedly installed on the inner-circle moving block. The stabilizing moving unit includes a stabilizing moving motor, a stabilizing moving screw rod, a stabilizing moving block and a stabilizing moving plate. The stabilizing moving motor is fixedly installed on the lathe housing. One end of the stabilizing moving screw rod is rotatably connected to the lathe housing. The other end of the stabilizing moving screw rod is fixedly installed at the output end of the stabilizing moving motor. The stabilizing moving block is sleeved on the stabilizing moving screw rod and is in threaded cooperation with the stabilizing moving screw rod. The stabilizing moving plate is fixedly installed on the stabilizing moving block. Two moving side plates are fixedly installed on the stabilizing moving plate. The single-wheel driving cylinder and the double-wheel driving cylinder are respectively fixedly installed on the corresponding moving side plates.

[0010] Preferably, the chip removal component further includes two supporting side plates, two driving rollers, a driving belt member, a driving motor and a supporting block. The supporting block is fixedly installed on the inner-circle moving plate. The two supporting side plates are fixedly installed on the supporting block. The two driving rollers are rotatably connected to the supporting side plates. The driving motor is fixedly installed on the supporting block. The driving belt member includes a driving belt pulley, a driven belt pulley and a driving belt. The driving belt pulley is fixedly installed at the output end of the driving motor. The driven belt pulley is fixedly installed on the corresponding driving roller. The driving belt is sleeved on the driving belt pulley and the driven belt pulley. The chip removal conveyor belt is sleeved on the two driving rollers.

[0011] Preferably, the scraping unit further includes two connecting blocks, a connecting rod and a stopper. Both connecting blocks are fixedly installed on the chip removal conveyor belt. The connecting rod is fixedly installed on the two connecting blocks. The scraper is rotatably connected to the connecting rod. One end of the torsion spring is fixedly installed on the scraper, and the other end of the torsion spring is fixedly installed on the connecting rod. The torsion spring is sleeved on the connecting rod. The stopper is fixedly installed on the connecting block.

[0012] Preferably, the internal turning component further includes an internal translation plate, an internal translation block, an internal translation motor, an internal translation screw rod and a turning rod mounting seat. An internal inverted trapezoidal block is fixedly installed on the internal moving plate. An internal inverted trapezoidal groove is formed on the internal translation plate. The internal inverted trapezoidal block is slidably fitted in the internal inverted trapezoidal groove. An internal moving groove is formed on the internal moving plate. The internal translation screw rod is rotatably connected in the internal moving groove. The internal translation motor is fixedly installed on the internal moving plate. One end of the internal translation screw rod is fixedly installed on the output end of the internal translation motor. The internal translation block is fixedly installed on the internal translation plate. The internal translation block is slidably fitted in the internal translation groove. The internal translation block is sleeved on the internal translation screw rod and is threadedly connected to the internal translation screw rod. The turning rod mounting seat is fixedly installed on the internal translation plate. The turning rod is fixedly installed on the turning rod mounting seat.

[0013] Preferably, the moving component further includes an external moving unit. The external moving unit includes an external moving motor, an external moving screw rod, an external moving block and an external moving plate. The external moving motor is fixedly installed on the lathe housing. One end of the external moving screw rod is rotatably connected to the lathe housing. The other end of the external moving screw rod is fixedly installed on the output end of the external moving motor. The external moving block is sleeved on the external moving screw rod and is in threaded cooperation with the external moving screw rod. The external moving plate is fixedly installed on the external moving block.

[0014] Preferably, an external cylindrical turning assembly is also provided in the lathe shell, and the external cylindrical turning assembly includes an external cylindrical translation plate, an external cylindrical translation block, an external cylindrical translation motor, an external cylindrical translation screw and a tool mounting seat, an external cylindrical inverted trapezoidal block is fixedly mounted on the external cylindrical translation plate, an external cylindrical inverted trapezoidal groove is provided on the external cylindrical translation plate, the external cylindrical inverted trapezoidal block slides in the external cylindrical inverted trapezoidal groove, the external cylindrical translation plate is provided with an external cylindrical translation groove, the external cylindrical translation screw is rotatably connected in the external cylindrical translation groove, the external cylindrical translation motor is fixedly mounted on the external cylindrical translation plate, one end of the external cylindrical translation screw is fixedly mounted on the output end of the external cylindrical translation motor, the external cylindrical translation block is fixedly mounted on the external cylindrical translation plate, the external cylindrical translation block slides in the external cylindrical translation groove, the external cylindrical translation block is sleeved on the external cylindrical translation screw and is threadedly connected to the external cylindrical translation screw, and the tool mounting seat is fixedly mounted on the external cylindrical translation plate.

[0015] Preferably, a sliding guide rail is fixedly installed in the lathe shell, and the inner circle moving plate, outer circle moving plate and stable moving plate are all slidably fitted on the sliding guide rail. The outer circle turning assembly also includes a liquid outlet pipe, and the liquid outlet pipe is fixed on the outer circle moving plate. A liquid outlet hole is opened on the turning rod, and the liquid outlet hole faces the direction of the turning tool. A guide plate and an oil collecting shell are fixedly installed in the lathe shell, and the guide plate is inclined toward the direction of the oil collecting shell. The single-wheel drive plate and the double-wheel drive plate are both provided with limit blocks, and the limit blocks are arranged through the corresponding movable side plates.

[0016] A turning method in the production of a crane-type filling arm, using the above-mentioned pipe turning machine tool, comprises the following steps: Fix the pipe fitting with a three-jaw chuck, and the three-jaw chuck drives the pipe fitting to rotate; The moving assembly drives the turning rod and the turning cutter to move, and the turning rod and the turning cutter move into the pipe fitting to cut the inner wall of the pipe fitting; At the same time, the moving assembly drives the chip removal assembly to move into the pipe along with the turning tool; The chips from turning the inner wall of the pipe fall to the bottom of the pipe, and the chip conveyor belt drives the scraper to circulate at the bottom of the pipe. The torsion spring presses the scraper against the inner wall of the pipe at a certain angle, and the scraper moves to scrape the chips out of the pipe.

[0017] In summary, the technical effects and advantages of the present invention are as follows: 1. In the present invention, the turning rod and the turning tool extend into the pipe fitting to turn the inner wall of the pipe fitting, enabling the processing of the inner wall of the pipe fitting and improving the smoothness of the inner wall of the pipe fitting. During the cutting process, the scraper continuously discharges the cut chips out of the pipe fitting, preventing the chips from affecting the cutting of the inner wall of the pipe fitting and ensuring the processing quality. This solves the problem that it is difficult to discharge the chips during the cutting process of the inner wall of the pipe fitting. The torsion spring makes the scraper abut against the inner wall of the pipe fittings with different diameters in an inclined state, maintaining a good chip removal effect during the processing of pipe fittings with different diameters and improving adaptability. 2. In the present invention, the moving component drives the stabilizing component to move to the cutting position of the turning tool on the pipe fitting. The single-wheel driving cylinder drives the single-wheel driving plate to move. The single-wheel driving plate drives the stabilizing single wheel to move through the single-wheel support frame and abut against the outer wall of the pipe fitting. The double-wheel driving cylinder drives the double-wheel driving plate to move. The double-wheel driving plate drives the two stabilizing double wheels to abut against the pipe fitting through the double-wheel support frame, limiting the pipe fitting at the cutting position, preventing the pipe fitting from displacing, improving the processing accuracy, and at the same time reducing the force on the pipe fitting at the three-jaw chuck position, preventing the pipe fitting from deforming and improving the processing quality of the pipe fitting. At the same time, the stabilizing single wheel corresponds to the position of the turning tool, so that the stabilizing single wheel and the turning tool are respectively located on the inner and outer sides of the pipe fitting. The pressure exerted by the turning tool on the pipe fitting is borne by the stabilizing single wheel, further preventing the pipe fitting from bending and deforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is one of the three-dimensional structure diagrams of the present invention; Figure 2 It is the second three-dimensional structure diagram of the present invention; Figure 3 It is of the present invention Figure 2 The enlarged view of part A in; Figure 4 It is of the present invention Figure 2 The enlarged view of part B in; Figure 5 It is the structure diagram of the lathe housing and the oil receiving housing in the present invention; Figure 6 It is the third three-dimensional structure diagram of the present invention; Figure 7 It is of the present invention Figure 6 The enlarged view of part C in; Figure 8 It is of the present invention Figure 6 The enlarged view of part D in; Figure 9 Schematic structural diagram of the lathe housing and turning rod in the present invention; Figure 10 For the present invention Figure 9 Enlarged view of part E in; Figure 11 Fourth schematic three-dimensional structure diagram of the present invention; Figure 12 For the present invention Figure 11 Enlarged view of part F in.

[0020] In the figure: 1. Lathe housing; 2. Three-jaw chuck; 3. Inner circle turning assembly; 31. Turning rod; 32. Turning tool; 33. Inner circle translation plate; 34. Inner circle translation block; 35. Inner circle translation motor; 36. Inner circle translation screw; 37. Turning rod mounting seat; 4. Moving assembly; 41. Inner circle moving unit; 411. Inner circle moving screw; 412. Inner circle moving block; 413. Inner circle moving plate; 42. Stable moving unit; 421. Stable moving screw; 422. Stable moving block; 423. Stable moving plate; 43. Outer circle moving unit; 431. Outer circle moving plate; 5. Chip removal assembly; 51. Chip removal conveyor belt; 52. Scraping and discharging unit; 521. Scraper; 522. Torsion spring; 523. Connecting block; 524. Connecting rod; 525. Stopper; 53. Support side plate; 54. Driving roller; 55. Driving belt member; 56. Driving motor; 57. Support block; 6. Stabilizing assembly; 61. Single-wheel driving cylinder; 62. Single-wheel driving plate; 63. Stable single wheel; 64. Double-wheel driving cylinder; 65. Double-wheel driving plate; 66. Stable double wheel; 7. Outer circle turning assembly; 71. Outer circle translation plate; 72. Outer circle translation screw; 73. Tool mounting seat; 8. Sliding guide rail; 9. Liquid outlet pipe; 10. Deflector; 11. Oil receiving shell; 12. Limiting block. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1: Refer to Figures 1 - 12 A pipe turning machine tool shown, including a lathe housing 1, a three-jaw chuck 2 and an inner circle turning assembly 3 are arranged in the lathe housing 1. The three-jaw chuck 2 can clamp and drive the pipe to rotate. The inner circle turning assembly 3 includes a turning rod 31 and a turning tool 32. A moving assembly 4 and a chip removal assembly 5 are also arranged in the lathe housing 1. The moving assembly 4 can drive the chip removal assembly 5 and the inner circle turning assembly 3 to move horizontally; The chip removal assembly 5 includes a chip removal conveyor belt 51 and a plurality of scraping units 52. The plurality of scraping units 52 are equidistantly arranged on the chip removal conveyor belt 51. The scraping unit 52 includes a scraper 521 and a torsion spring 522. When the scraper 521 is located at the bottom of the pipe fitting, the torsion spring 522 can press the end of the scraper 521 against the inner bottom of the pipe fitting. When the scraper 521 is located below the turning bar 31, the torsion spring 522 can press the end of the scraper 521 against the bottom of the turning bar 31.

[0023] Fix the pipe fitting through the three-jaw chuck 2. The three-jaw chuck 2 drives the pipe fitting to rotate. The moving assembly 4 drives the turning bar 31 and the turning tool 32 to move. The turning bar 31 and the turning tool 32 move into the pipe fitting, cutting the inner wall of the pipe fitting. At the same time, the moving assembly 4 drives the chip removal assembly 5 to move into the pipe fitting together with the turning tool 32. The chips cut from the inner wall of the pipe fitting fall to the bottom of the pipe fitting. The chip removal conveyor belt 51 drives the scraper 521 to move cyclically at the bottom of the pipe fitting. The torsion spring 522 makes the scraper 521 abut against the inner wall of the pipe fitting at a certain inclination angle. The scraper 521 moves to scrape the chips out of the pipe fitting. When turning pipe fittings with different diameters, due to the pressing force of the torsion spring 522, the scraper 521 abuts against the bottoms of pipe fittings with different diameters.

[0024] By extending the turning bar 31 and the turning tool 32 into the pipe fitting to turn the inner wall of the pipe fitting, the inner wall of the pipe fitting can be processed, improving the surface finish of the inner wall of the pipe fitting. During the cutting process, the scraper 521 continuously discharges the cut chips out of the pipe fitting, preventing the chips from affecting the cutting of the inner wall of the pipe fitting and ensuring the processing quality. It solves the problem that it is difficult to discharge the chips during the cutting process of the inner wall of the pipe fitting. The torsion spring 522 makes the scraper 521 abut against the inner walls of pipe fittings with different diameters in an inclined state, maintaining a good chip removal effect during the processing of pipe fittings with different diameters and improving the adaptability.

[0025] When the moving assembly 4 drives the chip removal conveyor belt 51 and the scraper 521 to move into the pipe fitting, the chip removal conveyor belt 51 drives the scraper 521 at the bottom to move out of the pipe fitting, so that the scraper 521 enters the pipe fitting through above the chip removal conveyor belt 51, preventing the scraper 521 located below the chip removal conveyor belt 51 from abutting against the pipe fitting and getting stuck.

[0026] The three-jaw chuck 2 is also connected to a drive source for driving the three-jaw chuck 2 to rotate. The three-jaw chuck 2 and the drive source are both prior arts and will not be described in detail here.

[0027] Example 2, refer to Figures 1 - 12As shown, different from the above embodiments, a stabilizing assembly 6 is further provided inside the lathe housing 1. The moving assembly 4 can drive the stabilizing assembly 6 to move horizontally. The stabilizing assembly 6 includes a single-wheel driving cylinder 61, a single-wheel driving plate 62, a single-wheel support frame, a stabilizing single wheel 63, a double-wheel driving cylinder 64, a double-wheel driving plate 65, two double-wheel support frames, and two stabilizing double wheels 66. The single-wheel driving plate 62 is fixedly installed at the output end of the single-wheel driving cylinder 61. The single-wheel support frame is fixedly installed on the single-wheel driving plate 62. The stabilizing single wheel 63 is rotatably connected to the single-wheel support frame. The double-wheel driving plate 65 is fixedly installed on the double-wheel driving cylinder 64. The double-wheel support frames are fixedly installed on the double-wheel driving plate 65. The two stabilizing double wheels 66 are rotatably connected to the corresponding double-wheel support frames. The stabilizing single wheel 63 and the turning tool 32 are arranged on the same side of the turning rod 31.

[0028] The moving assembly 4 drives the stabilizing assembly 6 to move to the cutting position of the turning tool 32 on the pipe fitting. The single-wheel driving cylinder 61 drives the single-wheel driving plate 62 to move. The single-wheel driving plate 62 drives the stabilizing single wheel 63 to move through the single-wheel support frame to abut against the outer wall of the pipe fitting. The double-wheel driving cylinder 64 drives the double-wheel driving plate 65 to move. The double-wheel driving plate 65 drives the two stabilizing double wheels 66 to abut against the pipe fitting through the double-wheel support frames, limiting the pipe fitting at the cutting position, preventing the pipe fitting from displacing, improving the machining accuracy, and at the same time reducing the force on the pipe fitting at the position of the three-jaw chuck 2, preventing the pipe fitting from deforming, improving the machining quality of the pipe fitting. At the same time, the position of the stabilizing single wheel 63 corresponds to that of the turning tool 32, so that the stabilizing single wheel 63 and the turning tool 32 are respectively located on the inner and outer sides of the pipe fitting. The pressure exerted by the turning tool 32 on the pipe fitting is borne by the stabilizing single wheel 63, further preventing the pipe fitting from bending and deforming.

[0029] Embodiment 3, referring to Figures 1 - 12 As shown, different from the above embodiments, the moving assembly 4 includes an inner-circle moving unit 41 and a stabilizing moving unit 42. The inner-circle moving unit 41 includes an inner-circle moving motor, an inner-circle moving screw 411, an inner-circle moving block 412, and an inner-circle moving plate 413. The inner-circle moving motor is fixedly installed on the lathe housing 1. One end of the inner-circle moving screw 411 is rotatably connected to the lathe housing 1, and the other end of the inner-circle moving screw 411 is fixedly installed at the output end of the inner-circle moving motor. The inner-circle moving block 412 is sleeved on the inner-circle moving screw 411 and is in threaded cooperation with the inner-circle moving screw 411. The inner-circle moving plate 413 is fixedly installed on the inner-circle moving block 412; The stable moving unit 42 includes a stable moving motor, a stable moving screw 421, a stable moving block 422 and a stable moving plate 423. The stable moving motor is fixedly installed on the lathe housing 1. One end of the stable moving screw 421 is rotatably connected to the lathe housing 1, and the other end of the stable moving screw 421 is fixedly installed on the output end of the stable moving motor. The stable moving block 422 is sleeved on the stable moving screw 421 and is in threaded cooperation with the stable moving screw 421. The stable moving plate 423 is fixedly installed on the stable moving block 422. Two moving side plates are fixedly installed on the stable moving plate 423. The single-wheel driving cylinder 61 and the double-wheel driving cylinder 64 are respectively fixedly installed on the corresponding moving side plates.

[0030] When it is necessary to horizontally move the internal turning assembly 3, the internal moving motor is started. The internal moving motor drives the internal moving screw 411 to rotate. The internal moving block 412 moves on the internal moving screw 411. The internal moving block 412 drives the internal moving plate 413 to move. The internal moving plate 413 drives the turning rod 31 and the turning tool 32 to move horizontally.

[0031] When it is necessary to horizontally move the stable assembly 6, the stable moving motor is started. The stable moving motor drives the stable moving screw 421 to rotate. The stable moving block 422 moves on the stable moving screw 421. The stable moving block 422 drives the stable moving plate 423 to move. The stable moving plate 423 drives the stable assembly 6 to move horizontally.

[0032] Example 4, referring to Figures 1 - 12 As shown, different from the above embodiment, the chip removal assembly 5 further includes two support side plates 53, two driving rollers 54, a driving belt member 55, a driving motor 56 and a support block 57. The support block 57 is fixedly installed on the internal moving plate 413. The two support side plates 53 are fixedly installed on the support block 57. The two driving rollers 54 are rotatably connected to the support side plates 53. The driving motor 56 is fixedly installed on the support block 57. The driving belt member 55 includes a driving pulley, a driven pulley and a driving belt. The driving pulley is fixedly installed on the output end of the driving motor 56. The driven pulley is fixedly installed on the corresponding driving roller 54. The driving belt is sleeved on the driving pulley and the driven pulley. The chip removal conveyor belt 51 is sleeved on the two driving rollers 54.

[0033] The driving motor 56 drives the driving pulley to rotate. The driving pulley drives the driving belt to rotate. The driving belt makes the driven pulley rotate. The driven pulley drives the corresponding driving roller 54 to rotate. The driving roller 54 drives the chip removal conveyor belt 51 to rotate. The chip removal conveyor belt 51 drives the scraper 521 to move.

[0034] Example 5, referring to Figures 1 - 12As shown, the difference from the above embodiment is that the scraping unit 52 further includes two connecting blocks 523, a connecting rod 524, and a stopper 525. Both connecting blocks 523 are fixedly installed on the chip removal conveyor belt 51. The connecting rod 524 is fixedly installed on the two connecting blocks 523. The scraper 521 is rotatably connected to the connecting rod 524. One end of the torsion spring 522 is fixedly installed on the scraper 521, and the other end of the torsion spring 522 is fixedly installed on the connecting rod 524. The torsion spring 522 is sleeved on the connecting rod 524, and the stopper 525 is fixedly installed on the connecting block 523.

[0035] The stopper 525 limits the rotation angle of the scraper 521.

[0036] Embodiment 6, referring to Figures 1 - 12 As shown, the difference from the above embodiment is that the internal turning assembly 3 further includes an internal translation plate 33, an internal translation block 34, an internal translation motor 35, an internal translation screw 36, and a turning rod mounting seat 37. An internal inverted trapezoidal block is fixedly installed on the internal moving plate 413. An internal inverted trapezoidal groove is formed on the internal translation plate 33. The internal inverted trapezoidal block is slidably fitted in the internal inverted trapezoidal groove. An internal moving groove is formed on the internal moving plate 413. The internal translation screw 36 is rotatably connected in the internal moving groove. The internal translation motor 35 is fixedly installed on the internal moving plate 413. One end of the internal translation screw 36 is fixedly installed on the output end of the internal translation motor 35. The internal translation block 34 is fixedly installed on the internal translation plate 33. The internal translation block 34 is slidably fitted in the internal translation groove. The internal translation block 34 is sleeved on the internal translation screw 36 and is threadedly connected to the internal translation screw 36. The turning rod mounting seat 37 is fixedly installed on the internal translation plate 33. The turning rod 31 is fixedly installed on the turning rod mounting seat 37.

[0037] The internal moving plate 413 drives the internal translation plate 33 to move horizontally synchronously. The internal translation motor 35 drives the internal translation screw 36 to rotate. The internal translation block 34 moves on the internal translation screw 36. The internal translation block 34 drives the internal translation plate 33 to move on the internal moving plate 413. The internal moving plate 413 drives the turning rod mounting seat 37 to move. The turning rod mounting seat 37 drives the turning rod 31 to move. The turning rod 31 drives the turning tool 32 to move, adjusting the position of the turning tool 32, thereby adjusting the turning depth of the turning tool 32 on the inner wall of the pipe fitting.

[0038] Embodiment 7, referring to Figures 1 - 12As shown, different from the above embodiments, the moving component 4 further includes an outer circle moving unit 43. The outer circle moving unit 43 includes an outer circle moving motor, an outer circle moving screw, an outer circle moving block, and an outer circle moving plate 431. The outer circle moving motor is fixedly installed on the lathe housing 1. One end of the outer circle moving screw is rotatably connected to the lathe housing 1, and the other end of the outer circle moving screw is fixedly installed on the output end of the outer circle moving motor. The outer circle moving block is sleeved on the outer circle moving screw and is in threaded cooperation with the outer circle moving screw. The outer circle moving plate 431 is fixedly installed on the outer circle moving block. An outer circle turning component 7 is further arranged in the lathe housing 1. The outer circle turning component 7 includes an outer circle translation plate 71, an outer circle translation block, an outer circle translation motor, an outer circle translation screw 72, and a tool mounting seat 73. An outer circle trapezoidal block is fixedly installed on the outer circle moving plate 431. An outer circle trapezoidal groove is formed on the outer circle translation plate 71. The outer circle trapezoidal block is slidably fitted in the outer circle trapezoidal groove. An outer circle moving groove is formed on the outer circle moving plate 431. The outer circle translation screw 72 is rotatably connected in the outer circle moving groove. The outer circle translation motor is fixedly installed on the outer circle moving plate 431. One end of the outer circle translation screw 72 is fixedly installed on the output end of the outer circle translation motor. The outer circle translation block is fixedly installed on the outer circle translation plate 71. The outer circle translation block is slidably fitted in the outer circle translation groove. The outer circle translation block is sleeved on the outer circle translation screw 72 and is in threaded connection with the outer circle translation screw 72. The tool mounting seat 73 is fixedly installed on the outer circle translation plate 71.

[0039] When it is necessary to horizontally move the outer circle turning component 7, the outer circle moving motor is started. The outer circle moving motor drives the outer circle moving screw to rotate. The outer circle moving block moves on the outer circle moving screw. The outer circle moving block drives the outer circle moving plate 431 to move. The outer circle moving plate 431 drives the outer circle translation plate 71 to synchronously move horizontally. The outer circle translation motor drives the outer circle translation screw 72 to rotate. The outer circle translation block moves on the outer circle translation screw 72. The outer circle translation block drives the outer circle translation plate 71 to move on the outer circle moving plate 431. The outer circle moving plate 431 drives the tool mounting seat 73 to move. The tool mounting seat 73 drives the tool to move, adjusting the position of the tool, thereby adjusting the turning depth of the turning tool 32 on the outer wall of the pipe fitting, enabling the turning of the outer wall of the pipe fitting, so that both the inner and outer walls of the pipe fitting can be turned, improving the processing efficiency.

[0040] Embodiment 8, refer to Figures 1 - 12As shown in the figure, it is different from the above embodiment in that a sliding guide rail 8 is fixedly installed inside the lathe housing 1. The inner circle moving plate 413, the outer circle moving plate 431 and the stable moving plate 423 are all slidably fitted on the sliding guide rail 8. The outer circle turning assembly 7 further includes a liquid outlet pipe 9. The liquid outlet pipe 9 is fixed on the outer circle moving plate 431. Liquid outlet holes are provided on the turning rod 31, and the liquid outlet holes face the direction of the turning tool 32. A flow guide plate 10 and an oil receiving shell 11 are fixedly installed inside the lathe housing 1. The flow guide plate 10 is inclined towards the oil receiving shell 11. The single-wheel drive plate 62 and the double-wheel drive plate 65 are both provided with limit blocks 12, and the limit blocks 12 penetrate through the corresponding moving side plates.

[0041] The inner circle moving plate 413, the outer circle moving plate 431 and the stable moving plate 423 are slidably fitted on the sliding guide rail 8, making it more stable and not easy to shake. The liquid outlet pipe 9 sprays lubricating liquid when machining the outer wall of the pipe fitting, and the liquid outlet holes spray lubricating liquid when machining the inner wall of the pipe fitting, reducing the machining temperature, preventing the pipe fitting from overheating and deforming, and improving the machining stability. The cutting fluid and debris scraped from the inner wall of the pipe fitting fall onto the flow guide plate 10 and flow into the oil receiving shell 11 through the flow guide plate 10. The limit blocks 12 make the movement of the single-wheel drive plate 62 and the double-wheel drive plate 65 more stable.

[0042] A turning method in the production of a crane-type filling arm uses the above-mentioned pipe fitting turning machine tool, including the following steps: Fix the pipe fitting through the three-jaw chuck 2, and the three-jaw chuck 2 drives the pipe fitting to rotate; The moving assembly 4 drives the turning rod 31 and the turning tool 32 to move. The turning rod 31 and the turning tool 32 move towards the inside of the pipe fitting to cut the inner wall of the pipe fitting; At the same time, the moving assembly 4 drives the chip removal assembly 5 to move into the pipe fitting together with the turning tool 32; The debris from turning the inner wall of the pipe fitting falls to the bottom of the pipe fitting. The chip removal conveyor belt 51 drives the scraping plate 521 to move in a cycle at the bottom of the pipe fitting. The torsion spring 522 presses the scraping plate 521 against the inner wall of the pipe fitting at a certain inclination angle, and the scraping plate 521 moves to scrape the debris out of the pipe fitting.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe fitting turning machine tool, comprising a lathe housing, characterized in that: Inside the lathe housing, a three-jaw chuck and an internal turning component are provided. The three-jaw chuck can clamp the pipe fitting and drive the pipe fitting to rotate. The internal turning component includes a turning rod and a turning tool. Inside the lathe housing, a moving component and a chip removal component are also provided. The moving component can drive the chip removal component and the internal turning component to move horizontally; The chip removal component includes a chip removal conveyor belt and a number of scraping units. The number of the scraping units are equidistantly arranged on the chip removal conveyor belt. The scraping unit includes a scraper and a torsion spring. When the scraper is located at the bottom of the pipe fitting, the torsion spring can press the end of the scraper against the inner bottom of the pipe fitting. When the scraper is located below the turning rod, the torsion spring can press the end of the scraper against the bottom of the turning rod.

2. The pipe fitting turning machine according to claim 1, characterized in that: Inside the lathe housing, a stabilizing component is also provided. The moving component can drive the stabilizing component to move horizontally. The stabilizing component includes a single-wheel driving cylinder, a single-wheel driving plate, a single-wheel support frame, a stabilizing single wheel, a double-wheel driving cylinder, a double-wheel driving plate, two double-wheel support frames and two stabilizing double wheels. The single-wheel driving plate is fixedly installed at the output end of the single-wheel driving cylinder. The single-wheel support frame is fixedly installed on the single-wheel driving plate. The stabilizing single wheel is rotatably connected to the single-wheel support frame. The double-wheel driving plate is fixedly installed on the double-wheel driving cylinder. The double-wheel support frames are fixedly installed on the double-wheel driving plate. The two stabilizing double wheels are rotatably connected to the corresponding double-wheel support frames. The stabilizing single wheel and the turning tool are arranged on the same side of the turning rod.

3. The pipe fitting turning machine according to claim 2, wherein: The moving component includes an internal turning moving unit and a stabilizing moving unit. The internal turning moving unit includes an internal turning moving motor, an internal turning moving screw, an internal turning moving block and an internal turning moving plate. The internal turning moving motor is fixedly installed on the lathe housing. One end of the internal turning moving screw is rotatably connected to the lathe housing. The other end of the internal turning moving screw is fixedly installed at the output end of the internal turning moving motor. The internal turning moving block is sleeved on the internal turning moving screw and is in threaded cooperation with the internal turning moving screw. The internal turning moving plate is fixedly installed on the internal turning moving block; The stabilizing moving unit includes a stabilizing moving motor, a stabilizing moving screw, a stabilizing moving block and a stabilizing moving plate. The stabilizing moving motor is fixedly installed on the lathe housing. One end of the stabilizing moving screw is rotatably connected to the lathe housing. The other end of the stabilizing moving screw is fixedly installed at the output end of the stabilizing moving motor. The stabilizing moving block is sleeved on the stabilizing moving screw and is in threaded cooperation with the stabilizing moving screw. The stabilizing moving plate is fixedly installed on the stabilizing moving block. Two moving side plates are fixedly installed on the stabilizing moving plate. The single-wheel driving cylinder and the double-wheel driving cylinder are respectively fixedly installed on the corresponding moving side plates.

4. A pipe fitting turning machine according to claim 3, characterized in that: The chip removal component further includes two support side plates, two driving rollers, a driving belt member, a driving motor, and a support block. The support block is fixedly installed on the inner circle moving plate. The two support side plates are fixedly installed on the support block. The two driving rollers are rotatably connected to the support side plates. The driving motor is fixedly installed on the support block. The driving belt member includes a driving pulley, a driven pulley, and a driving belt. The driving pulley is fixedly installed at the output end of the driving motor. The driven pulley is fixedly installed on the corresponding driving roller. The driving belt is sleeved on the driving pulley and the driven pulley. The chip removal conveyor belt is sleeved on the two driving rollers.

5. A pipe fitting turning machine according to claim 1, characterized in that: The scraping unit further includes two connecting blocks, a connecting rod, and a stop block. The two connecting blocks are both fixedly installed on the chip removal conveyor belt. The connecting rod is fixedly installed on the two connecting blocks. The scraper is rotatably connected to the connecting rod. One end of the torsion spring is fixedly installed on the scraper. The other end of the torsion spring is fixedly installed on the connecting rod. The torsion spring is sleeved on the connecting rod. The stop block is fixedly installed on the connecting block.

6. The pipe fitting turning machine according to claim 3, characterized in that: The inner circle turning component further includes an inner circle translation plate, an inner circle translation block, an inner circle translation motor, an inner circle translation screw rod, and a turning rod mounting seat. An inner circle inverted trapezoidal block is fixedly installed on the inner circle moving plate. An inner circle inverted trapezoidal groove is formed on the inner circle translation plate. The inner circle inverted trapezoidal block is slidably fitted in the inner circle inverted trapezoidal groove. An inner circle moving groove is formed on the inner circle moving plate. The inner circle translation screw rod is rotatably connected in the inner circle moving groove. The inner circle translation motor is fixedly installed on the inner circle moving plate. One end of the inner circle translation screw rod is fixedly installed at the output end of the inner circle translation motor. The inner circle translation block is fixedly installed on the inner circle translation plate. The inner circle translation block is slidably fitted in the inner circle translation groove. The inner circle translation block is sleeved on the inner circle translation screw rod and is threadedly connected to the inner circle translation screw rod. The turning rod mounting seat is fixedly installed on the inner circle translation plate. The turning rod is fixedly installed on the turning rod mounting seat.

7. A pipe fitting turning machine according to claim 3, characterized in that: The moving component further includes an outer circle moving unit. The outer circle moving unit includes an outer circle moving motor, an outer circle moving screw rod, an outer circle moving block, and an outer circle moving plate. The outer circle moving motor is fixedly installed on the lathe housing. One end of the outer circle moving screw rod is rotatably connected to the lathe housing. The other end of the outer circle moving screw rod is fixedly installed at the output end of the outer circle moving motor. The outer circle moving block is sleeved on the outer circle moving screw rod and is in threaded cooperation with the outer circle moving screw rod. The outer circle moving plate is fixedly installed on the outer circle moving block.

8. A pipe fitting turning machine according to claim 7, characterized in that: An external turning component is further provided inside the lathe housing. The external turning component includes an external turning translation plate, an external turning translation block, an external turning translation motor, an external turning translation screw rod, and a tool mounting seat. An external turning trapezoidal block is fixedly installed on the external turning plate. An external turning trapezoidal groove is formed on the external turning translation plate. The external turning trapezoidal block is slidably fitted in the external turning trapezoidal groove. An external turning moving groove is formed on the external turning plate. The external turning translation screw rod is rotatably connected in the external turning moving groove. The external turning translation motor is fixedly installed on the external turning plate. One end of the external turning translation screw rod is fixedly installed at the output end of the external turning translation motor. The external turning translation block is fixedly installed on the external turning translation plate. The external turning translation block is slidably fitted in the external turning translation groove. The external turning translation block is sleeved on the external turning translation screw rod and is threadedly connected with the external turning translation screw rod. The tool mounting seat is fixedly installed on the external turning translation plate.

9. A pipe fitting turning machine tool according to claim 8, characterized in that: A sliding guide rail is fixedly installed inside the lathe housing. The internal turning plate, the external turning plate, and the stable moving plate are all slidably fitted on the sliding guide rail. The external turning component further includes a liquid outlet pipe. The liquid outlet pipe is fixed on the external turning plate. Liquid outlet holes are formed on the turning rod and face the direction of the turning tool. A guide plate and an oil receiving shell are fixedly installed inside the lathe housing. The guide plate is inclined towards the oil receiving shell. The single-wheel driving plate and the double-wheel driving plate are both provided with limit blocks. The limit blocks penetrate through the corresponding moving side plates.

10. A turning method in the production of a crane-type filling arm, which uses the pipe turning machine tool described in any one of claims 1-9, characterized in that: It includes the following steps: Fix the pipe fitting through a three-jaw chuck, and the three-jaw chuck drives the pipe fitting to rotate; The moving component drives the turning rod and the turning tool to move. The turning rod and the turning tool move towards the inside of the pipe fitting to cut the inner wall of the pipe fitting; Meanwhile, the moving component drives the chip removal component to move into the pipe fitting together with the turning tool; The chips generated from turning the inner wall of the pipe fitting fall to the bottom of the pipe fitting. The chip removal conveyor belt makes the scraper move cyclically at the bottom of the pipe fitting. The torsion spring makes the scraper abut against the inner wall of the pipe fitting at a certain inclination angle. The movement of the scraper scrapes the chips out of the pipe fitting.

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