A pipe end flattening machine

Abstract

The utility model relates to a kind of pipe fittings head machine.It solves the existing chuck clamping process cumbersome, chuck can lead to pipe deformation or clamping injury and other technical problems.Chuck bed is equipped with driving chuck, chuck bed is equipped with sliding table plate through sliding table drive adjusting structure on the side, sliding table plate upper end is equipped with clamping frame, clamping frame lower end inboard is equipped with clamping base, clamping base upper end is movably equipped with clamping abutment, clamping frame upper end is equipped with clamping control component, clamping abutment and clamping base between are equipped with the clamping fixed structure that can fix pipe, driving chuck is equipped with tool piece.The advantage is that: using double positioning design, by upper clamping groove and lower clamping groove hold tightly pipe, and using the cooperation of annular protrusion and fixed ring groove, not only avoid pipe deformation damage when clamping, also realize the accurate axial positioning of pipe, effectively prevent axial movement in machining process, ensure the machining precision and quality of pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe fitting end-forming machine equipment, and specifically relates to a pipe fitting end-forming machine. Background Technology

[0002] Pipe fittings, such as steel pipes and copper pipes, are widely used in industrial production. Before leaving the factory or being used, these pipe fittings often need to have their ends machined to a flat surface. A flat end face is crucial for subsequent welding, connection, and assembly processes, directly affecting the quality and performance of the product. Currently, the traditional method for machining the ends of pipe fittings mostly uses a conventional lathe. When machining on a conventional lathe, a three-jaw chuck is used to clamp and fix the pipe fitting, and then the end face is machined using a cutting tool. However, the chuck clamping process is cumbersome and has low production efficiency. At the same time, for thin-walled pipe fittings, the chuck can easily cause deformation or damage, affecting the machining quality. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a pipe end-flattening machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pipe fitting flattening machine, comprising a machine bed, a drive chuck at one end of the machine bed, a slide plate that moves axially along the drive chuck direction via a slide table drive adjustment structure on the upper side of the machine bed, a clamping frame at the upper end of the slide plate, a clamping base at the lower inner side of the clamping frame, a clamping top seat movably provided at the upper end of the clamping base, a clamping control component at the upper end of the clamping frame that enables the clamping top seat to move axially along the clamping base direction, a clamping fixing structure for fixing the pipe fitting is provided between the clamping top seat and the clamping base, and a cutting tool on the drive chuck that contacts the end face of the pipe fitting near the drive chuck.

[0005] In the aforementioned pipe end-forming machine, the clamping and fixing structure includes an upper clamping groove located on the inner side of the lower end of the clamping top seat, and a lower clamping groove corresponding to the upper clamping groove located on the inner side of the upper end of the clamping base. The upper and lower clamping grooves are joined together to form a clamping hole. The pipe fitting is positioned between the upper and lower clamping grooves, and the pipe fitting has a cylindrical structure that matches the clamping hole. The clamping hole is formed by the joining of the upper and lower clamping grooves. This split-type clamping structure has the advantages of strong versatility, stable clamping, and adaptability to pipe fittings of different lengths, thus enhancing the flexibility of the equipment.

[0006] In the aforementioned pipe end-flattening machine, the upper clamping groove has an upper semi-circular groove circumferentially arranged in the middle, and the lower clamping groove has a corresponding lower semi-circular groove circumferentially arranged in the middle. A fixing annular groove is formed between the upper and lower semi-circular grooves. One end of the pipe fitting has an annular protrusion corresponding to the fixing annular groove on its outer circumferential side. Guide posts are provided on the outer sides of both ends of the upper semi-circular groove, and guide grooves matching the guide posts are provided on the outer sides of both ends of the lower semi-circular groove. Through the cooperation of the annular protrusion and the fixing annular groove, and the cooperation of the guide posts and the guide grooves, precise positioning and reliable anti-rotation of the pipe fitting are achieved. This ensures that the pipe fitting will not experience axial movement or circumferential rotation during processing, thereby guaranteeing the perpendicularity and processing quality of the flattened end face.

[0007] In the aforementioned pipe end milling machine, the lower end of the clamping frame has a base plate fixed to the slide plate, one end of the base plate has a vertically arranged side plate, and the upper end of the clamping frame has a top plate connected to the side plate. The advantage of this frame design is its stable structure and high rigidity. It can withstand various forces generated during clamping and processing, preventing frame deformation and providing a solid and reliable base for the entire clamping system.

[0008] In the aforementioned pipe fitting end-forming machine, the clamping control assembly includes a drive cylinder mounted on the upper part of the top plate. The lower end of the drive cylinder has a drive rod axially penetrating the top plate. The drive rod is connected to the upper end of the clamping top seat via a fixed plate. A control handle connected to the drive cylinder is located on the side of the top plate away from the drive chuck. Using a drive cylinder as the power source and equipped with a control handle offers advantages such as labor-saving and convenient operation, enabling rapid and consistent clamping and releasing actions, improving production efficiency, and reducing the operator's labor intensity.

[0009] In the aforementioned pipe end-flattening machine, the upper side of the machine bed has a machine table, the drive chuck is located at one end of the machine table, and an L-shaped slide adjustment plate is provided above the machine table. The slide adjustment plate has a horizontal portion located above the machine table, and one end of the horizontal portion has a vertical portion located on the side of the machine table. The slide drive adjustment structure includes a horizontal drive assembly disposed between the slide adjustment plate and the machine table, and a longitudinal adjustment assembly disposed between the slide adjustment plate and the slide plate. The use of an L-shaped slide adjustment plate and two sets of horizontal and longitudinal adjustment assemblies has the advantage of achieving multi-directional and precise feed control. This allows the equipment to be flexibly adjusted to adapt to pipes of different lengths and to precisely control the cutting amount during end-flattening.

[0010] In the aforementioned pipe fitting flattening machine, the transverse drive assembly includes several transverse guide rails disposed on the side of the machine tool table near the transverse section. Several transverse sliders connected to the transverse guide rails are respectively disposed on the lower side of the transverse section. A transverse lead screw is disposed on the side of the machine tool table near the vertical section. A transverse nut connected to the transverse lead screw is disposed on the side of the vertical section near the machine tool table. A transverse drive unit connected to the transverse nut is disposed on the side of the vertical section away from the machine tool table. The advantages of the lead screw and nut transmission method are smooth transmission, high positioning accuracy, and good self-locking. It can achieve precise transverse movement and reliable locking of the slide within a large stroke range, ensuring the stability of the processing.

[0011] In the aforementioned pipe end-flattening machine, the longitudinal adjustment assembly includes several longitudinal guide rails disposed on the side of the transverse section away from the machine tool table. The slide plate is disposed above the transverse section and connected to the longitudinal guide rails via several longitudinal sliders. A longitudinal lead screw is provided between the longitudinal guide rails. A longitudinal nut connected to the lead screw is provided at the end of the slide plate near the transverse section, and a longitudinal drive unit is connected to the end of the lead screw near the vertical section. Using a lead screw drive also has the advantage of precisely controlling the feed speed and depth of the pipe fitting to the cutting tool, thereby directly determining the dimensional accuracy and surface quality of the end-flattening process.

[0012] In the aforementioned pipe end-forming machine, a tool mounting seat is detachably mounted on the inner side of the drive chuck near the clamping frame. The tool is mounted on the tool mounting seat near the clamping frame, and the end of the pipe fitting away from the annular protrusion extends to the outside of the clamping hole and corresponds to the tool. The advantage of using a detachable tool mounting seat is that tool replacement is convenient and maintenance is easy. When the tool wears out or different end faces need to be machined, the tool mounting seat can be quickly disassembled to replace the tool, minimizing downtime.

[0013] In the above-mentioned pipe fitting end mill, the clamping base is located on the side of the base plate near the drive chuck, the side of the clamping base near the drive chuck is flush with the side of the clamping frame near the drive chuck, and the clamping top seat is coaxially arranged with the clamping base.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. The device adopts a dual positioning design, which clamps the pipe fitting through the upper and lower clamping grooves. The cooperation between the annular protrusion and the fixed ring groove not only avoids the deformation and damage caused by uneven force on the pipe fitting during clamping, but also achieves precise axial positioning of the pipe fitting. At the same time, it effectively prevents axial movement during the processing, ensuring the processing accuracy and quality of the pipe fitting.

[0015] 2. This device uses a drive cylinder as the clamping power source, and one-button quick clamping and loosening can be achieved through the control handle. Compared with traditional manual bolt clamping, it greatly shortens the auxiliary time, reduces the labor intensity of operators, and is suitable for mass production.

[0016] 3. Through the cooperation of guide pillars and guide grooves, this device ensures precise alignment of the upper and lower molds during mold closing, and greatly enhances the clamping mechanism's ability to resist torsion. It can effectively prevent the pipe fittings from rotating under cutting force, thus ensuring processing safety and quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0019] Figure 3 This is a schematic diagram of the clamping and fixing structure in this utility model.

[0020] Figure 4 This is a schematic diagram of the clamping and fixing structure from another perspective in this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the sliding table adjustment plate in this utility model.

[0022] Figure 6 This is a schematic diagram of the tool mounting base in this utility model.

[0023] Figure 7 This is a structural schematic diagram of the pipe fitting in this utility model.

[0024] In the diagram: 1. Machine bed; 11. Drive chuck; 12. Slide plate; 13. Pipe fitting; 14. Tool fitting; 15. Annular protrusion; 16. Machine table; 17. Slide adjustment plate; 18. Horizontal section; 19. Vertical section; 20. Tool mounting seat; 2. Clamping frame; 21. Base plate; 22. Side plate; 23. Top plate; 3. Clamping base; 4. Clamping top seat; 5. Clamping control assembly; 51. Drive cylinder; 52. Drive rod; 53. Fixed plate; 54. Control handle; 6. Clamping fixing structure; 61. Upper clamping slot; 62. Lower clamping slot; 63. Upper semi-circular slot; 64. Lower semi-circular slot; 65. Guide column; 66. Guide groove; 7. Slide drive adjustment structure; 71. Horizontal drive assembly; 72. Longitudinal adjustment assembly; 73. Horizontal guide rail; 74. Horizontal slider; 75. Horizontal lead screw; 76. Horizontal nut; 77. Horizontal drive section; 78. Longitudinal guide rail; 79. Longitudinal lead screw; 81. Longitudinal nut; 82. Longitudinal drive section. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-7 As shown, a pipe end milling machine includes a machine bed 1, a drive chuck 11 at one end of the machine bed 1, a slide plate 12 that moves axially along the drive chuck 11 via a slide table drive adjustment structure 7 on the upper side of the machine bed 1, a clamping frame 2 at the upper end of the slide plate 12, a clamping base 3 at the lower inner side of the clamping frame 2, a clamping top seat 4 movably mounted on the upper end of the clamping base 3, a clamping control component 5 at the upper end of the clamping frame 2 that enables the clamping top seat 4 to move axially along the clamping base 3, a clamping fixing structure 6 that can fix the pipe 13 between the clamping top seat 4 and the clamping base 3, and a cutting tool 14 that contacts the end face of the pipe 13 near the drive chuck 11 on the drive chuck 11.

[0027] Combination Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, the clamping and fixing structure 6 includes an upper clamping groove 61 located on the inner side of the lower end of the clamping top seat 4, and a lower clamping groove 62 corresponding to the upper clamping groove 61 located on the inner side of the upper end of the clamping base 3. The upper clamping groove 61 and the lower clamping groove 62 are joined together to form a clamping hole. The pipe fitting 13 is disposed between the upper clamping groove 61 and the lower clamping groove 62, and the pipe fitting 13 has a cylindrical structure that matches the clamping hole. The clamping hole is formed by the upper clamping groove 61 and the lower clamping groove 62. The advantages of this split clamping structure are strong versatility, stable clamping, and the ability to adapt to pipe fittings 13 of different lengths, thus enhancing the flexibility of the equipment.

[0028] The upper clamping groove 61 has an upper semi-circular groove 63 in the middle circumferential direction, and the lower clamping groove 62 has a lower semi-circular groove 64 in the middle circumferential direction corresponding to the upper semi-circular groove 63. A fixing annular groove is formed between the upper semi-circular groove 63 and the lower semi-circular groove 64. One end of the pipe fitting 13 has an annular protrusion 15 on the outer circumferential direction corresponding to the fixing annular groove. Guide posts 65 are respectively provided on the outer sides of both ends of the upper semi-circular groove 63, and guide grooves 66 matching the guide posts 65 are respectively provided on the outer sides of both ends of the lower semi-circular groove 64. Through the cooperation of the annular protrusion 15 and the fixing annular groove, and the cooperation of the guide posts 65 and the guide grooves 66, the pipe fitting 13 is accurately positioned and reliably prevented from rotating. This ensures that the pipe fitting 13 will not experience axial movement or circumferential rotation during processing, thereby ensuring the perpendicularity of the flat end face and the processing quality.

[0029] Specifically, the clamping frame 2 has a base plate 21 fixed to the slide plate 12 at its lower end, a vertically arranged side plate 22 at one end of the base plate 21, and a top plate 23 connected to the side plate 22 at the upper end of the clamping frame 2. The advantage of this frame design is that it is structurally stable and has good rigidity. It can withstand various forces generated during clamping and processing, prevent the frame from deforming, and provide a solid and reliable base for the entire clamping system.

[0030] Meanwhile, the clamping control assembly 5 includes a drive cylinder 51 mounted on the upper end of the top plate 23. The lower end of the drive cylinder 51 has a drive rod 52 that axially penetrates the top plate 23. The drive rod 52 is connected to the upper end of the clamping top seat 4 via a fixed plate 53. A control handle 54 connected to the drive cylinder 51 is located on the side of the top plate 23 away from the drive chuck 11. Using the drive cylinder 51 as the power source and equipped with the control handle 54 offers advantages such as labor-saving and convenient operation, enabling rapid and consistent clamping and releasing actions, improving production efficiency, and reducing the operator's labor intensity.

[0031] Combination Figure 1 , Figure 2 and Figure 5 As shown, the machine tool bed 1 has a machine tool table 16 on its upper side, and a drive chuck 11 is disposed at one end of the machine tool table 16. An L-shaped slide adjustment plate 17 is disposed above the machine tool table 16. The slide adjustment plate 17 has a transverse portion 18 located above the machine tool table 16, and a vertical portion 19 located on the side of the machine tool table 16 at one end of the transverse portion 18. The slide drive adjustment structure 7 includes a transverse drive assembly 71 disposed between the slide adjustment plate 17 and the machine tool table 16, and a longitudinal adjustment assembly 72 disposed between the slide adjustment plate 17 and the slide plate 12. The use of the L-shaped slide adjustment plate 17 and two sets of transverse and longitudinal adjustment assemblies has the advantage of achieving multi-directional and precise feed control. This allows the equipment to be flexibly adjusted to adapt to pipes 13 of different lengths and to precisely control the cutting amount of the flat end.

[0032] The transverse drive assembly 71 includes several transverse guide rails 73 disposed on the side of the machine tool table 16 near the transverse section 18. Several transverse sliders 74 connected to the transverse guide rails 73 are respectively disposed on the lower side of the transverse section 18. A transverse lead screw 75 is disposed on the side of the machine tool table 16 near the vertical section 19. A transverse nut 76 connected to the transverse lead screw 75 is disposed on the side of the vertical section 19 near the machine tool table 16. A transverse drive section 77 connected to the transverse nut 76 is disposed on the side of the vertical section 19 away from the machine tool table 16. The advantages of the lead screw and nut transmission method are smooth transmission, high positioning accuracy, and good self-locking performance. It can achieve precise transverse movement and reliable locking of the slide within a large stroke range, ensuring the stability of the machining process.

[0033] Specifically, the longitudinal adjustment assembly 72 includes several longitudinal guide rails 78 disposed on the side of the transverse section 18 away from the machine tool table 16. The slide plate 12 is disposed above the transverse section 18 and connected to the longitudinal guide rails 78 via several longitudinal sliders 79. A longitudinal lead screw 8 is disposed between the longitudinal guide rails 78. A longitudinal nut 81 connected to the longitudinal lead screw 8 is disposed at the end of the slide plate 12 near the transverse section 18, and a longitudinal drive unit 82 is connected to the end of the longitudinal lead screw 8 near the vertical section 19. The use of a lead screw drive has the advantage of precisely controlling the feed speed and depth of the tube 13 to the tool, thereby directly determining the dimensional accuracy and surface quality of the flat end machining.

[0034] like Figure 6 As shown, a tool mounting base 20 is detachably mounted on the inner side of the drive chuck 11 near the clamping frame 2. The tool 14 is mounted on the tool mounting base 20 near the clamping frame 2, and the end of the tube 13 away from the annular protrusion 15 extends to the outside of the clamping hole and corresponds to the tool 14. The advantage of using a detachable tool mounting base 20 is that it is convenient to replace tools and easy to maintain. When the tool is worn or different end faces need to be machined, the tool mounting base 20 can be quickly removed to replace the tool 14, minimizing downtime.

[0035] like Figure 3 As shown, the clamping base 3 is located on the side of the base plate 21 near the drive chuck 11. The side of the clamping base 3 near the drive chuck 11 is flush with the side of the clamping frame 2 near the drive chuck 11, and the clamping top seat 4 is coaxially arranged with the clamping base 3.

[0036] The principle of this embodiment is as follows: The pipe fitting 13 to be processed is placed in the lower clamping groove 62 of the clamping base 3. At this time, the annular protrusion 15 at one end of the pipe fitting 13 is set in the lower semi-circular groove 64. The drive cylinder 51 is started by the control handle 54. The drive rod 52 of the drive cylinder 51 pushes the clamping top seat 4 downward, so that it closes with the clamping base 3. The upper clamping groove 61 and the lower clamping groove 62 are joined to form a complete clamping hole, which clamps the pipe fitting 13 circumferentially. The upper semi-circular groove 63 and the lower semi-circular groove 64 are combined to form a fixing ring groove, which precisely clamps the annular protrusion 15 of the pipe fitting 13 in the middle. This achieves the axial positioning of the pipe fitting 13 and prevents the pipe fitting 13 from moving during processing. Inserting 65 into the semi-body guide groove 66 ensures that the clamping top seat 4 and the clamping base 3 will not be misaligned when closed, while also enhancing the overall clamping structure's resistance to torsion and preventing the pipe 13 from rotating under cutting force; the drive chuck 11 is driven to rotate at high speed, and drives the tool mounting seat 20 and tool 14 on it to rotate together. At the same time, the slide plate 12, driven by the slide drive adjustment structure 7, steadily feeds along the transverse guide rail 73 toward the rotating tool 14. The end face of the pipe 13 contacts the high-speed rotating tool 14, and the tool 14 turns the end of the pipe 13, cutting the end face flat in one go to achieve the required flatness.

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0038] Although this article extensively uses the following components: machine tool bed 1, drive chuck 11, slide plate 12, pipe fitting 13, tool component 14, annular protrusion 15, machine tool table 16, slide adjustment plate 17, transverse section 18, vertical section 19, tool mounting base 20, clamping frame 2, base plate 21, side plate 22, top plate 23, clamping base 3, clamping top seat 4, clamping control assembly 5, drive cylinder 51, drive rod 52, fixed plate 53, control handle 54, clamping fixing structure 6, upper The terms used include clamping groove 61, lower clamping groove 62, upper semi-circular slot 63, lower semi-circular slot 64, guide post 65, guide groove 66, slide table drive adjustment structure 7, transverse drive assembly 71, longitudinal adjustment assembly 72, transverse guide rail 73, transverse slider 74, transverse lead screw 75, transverse nut 76, transverse drive unit 77, longitudinal guide rail 78, longitudinal slider 79, longitudinal lead screw 8, longitudinal nut 81, and longitudinal drive unit 82, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A pipe fitting flattening machine, comprising a machine bed (1), wherein a drive chuck (11) is provided at one end of the machine bed (1), and a slide plate (12) that moves axially along the direction of the drive chuck (11) is provided on the upper side of the machine bed (1) via a slide drive adjustment structure (7), characterized in that, The upper end of the slide plate (12) is provided with a clamping frame (2), the lower end of the clamping frame (2) is provided with a clamping base (3), the upper end of the clamping base (3) is provided with a clamping top seat (4), the upper end of the clamping frame (2) is provided with a clamping control component (5) that can make the clamping top seat (4) rise and fall axially along the direction of the clamping base (3), the clamping top seat (4) and the clamping base (3) are provided with a clamping fixing structure (6) that can fix the pipe (13), and the drive chuck (11) is provided with a cutting tool (14) that contacts the end face of the pipe (13) near the drive chuck (11).

2. The pipe fitting end-pressing machine according to claim 1, characterized in that, The clamping and fixing structure (6) includes an upper clamping groove (61) provided on the inner side of the lower end of the clamping top seat (4), and a lower clamping groove (62) corresponding to the upper clamping groove (61) provided on the inner side of the upper end of the clamping base (3). The upper clamping groove (61) and the lower clamping groove (62) are joined together to form a clamping hole. The pipe fitting (13) is provided between the upper clamping groove (61) and the lower clamping groove (62), and the pipe fitting (13) has a cylindrical structure that matches the clamping hole.

3. A pipe fitting end-pressing machine according to claim 2, characterized in that, The upper clamping groove (61) is provided with an upper semi-circular groove (63) in the middle circumferential direction, and the lower clamping groove (62) is provided with a lower semi-circular groove (64) in the middle circumferential direction corresponding to the upper semi-circular groove (63). A fixed ring groove is formed between the upper semi-circular groove (63) and the lower semi-circular groove (64). One end of the pipe fitting (13) is provided with an annular protrusion (15) corresponding to the fixed ring groove on the outer side of the circumferential direction. Guide posts (65) are provided on the outer sides of both ends of the upper semi-circular groove (63), and guide grooves (66) matching the guide posts (65) are provided on the outer sides of both ends of the lower semi-circular groove (64).

4. A pipe fitting end-pressing machine according to claim 1, characterized in that, The clamping frame (2) has a base plate (21) fixed to the slide plate (12) at its lower end. One end of the base plate (21) is provided with a vertically arranged side plate (22), and the upper end of the clamping frame (2) is provided with a top plate (23) connected to the side plate (22).

5. A pipe fitting end-pressing machine according to claim 4, characterized in that, The clamping control assembly (5) includes a drive cylinder (51) set on the upper end of the top plate (23). The lower end of the drive cylinder (51) is provided with a drive rod (52) that axially penetrates the top plate (23). The drive rod (52) is connected to the upper end of the clamping top seat (4) through a fixed plate (53). The top plate (23) is provided with a control handle (54) connected to the drive cylinder (51) on the side away from the drive chuck (11).

6. A pipe fitting end-pressing machine according to claim 1, characterized in that, The machine tool bed (1) has a machine tool table (16) on its upper side. The drive chuck (11) is located at one end of the machine tool table (16). An L-shaped slide adjustment plate (17) is provided above the machine tool table (16). The slide adjustment plate (17) has a horizontal part (18) located above the machine tool table (16). One end of the horizontal part (18) has a vertical part (19) located on the side of the machine tool table (16). The slide drive adjustment structure (7) includes a horizontal drive assembly (71) located between the slide adjustment plate (17) and the machine tool table (16) and a longitudinal adjustment assembly (72) located between the slide adjustment plate (17) and the slide plate (12).

7. A pipe fitting end-pressing machine according to claim 6, characterized in that, The transverse drive assembly (71) includes several transverse guide rails (73) arranged on the side of the machine tool table (16) near the transverse part (18). Several transverse sliders (74) connected to the transverse guide rails (73) are respectively provided on the lower side of the transverse part (18). A transverse lead screw (75) is provided on the side of the machine tool table (16) near the vertical part (19). A transverse nut (76) connected to the transverse lead screw (75) is provided on the side of the vertical part (19) near the machine tool table (16). A transverse drive part (77) connected to the transverse nut (76) is provided on the side of the vertical part (19) away from the machine tool table (16).

8. A pipe fitting end-pressing machine according to claim 6, characterized in that, The longitudinal adjustment assembly (72) includes several longitudinal guide rails (78) disposed on the side of the transverse part (18) away from the machine tool table (16). The slide plate (12) is disposed above the transverse part (18) and connected to the longitudinal guide rails (78) through several longitudinal sliders (79). A longitudinal lead screw (8) is provided between the longitudinal guide rails (78). A longitudinal nut (81) connected to the longitudinal lead screw (8) is provided at the end of the slide plate (12) near the transverse part (18). A longitudinal drive part (82) is connected at the end of the longitudinal lead screw (8) near the vertical part (19).

9. A pipe fitting end-pressing machine according to claim 3, characterized in that, The drive chuck (11) is detachably provided with a tool mounting seat (20) on the inner side of one end near the clamping frame (2). The tool component (14) is located on the tool mounting seat (20) near the clamping frame (2). The tube component (13) extends to the outside of the clamping hole and corresponds to the tool component (14) at the end away from the annular protrusion (15).

10. A pipe fitting end-pressing machine according to claim 4, characterized in that, The clamping base (3) is located on the side of the base plate (21) near the drive chuck (11). The side of the clamping base (3) near the drive chuck (11) is flush with the side of the clamping frame (2) near the drive chuck (11). The clamping top seat (4) is coaxially arranged with the clamping base (3).

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