Cylinder barrel pipe cutting machine with shaft tensioning assembly

Abstract

The invention discloses an air cylinder barrel pipe cutting processing machine with a shaft tensioning assembly, relates to the technical field of air cylinder barrel forming, and is used for solving the problem that vibration marks on the cutting end face of a cylinder barrel are increased due to the fact that clamping is not stable enough in the cutting process of the cylinder barrel. A multi-position clamp is arranged on a machine base, multi-position clamping is conducted on the outer wall of a cut cylinder barrel, meanwhile, vibration generated in the cylinder barrel rotary cutting process is prevented from influencing the end face, an electric push rod is used for driving a jacking column to make contact with a rotating arm, outward supporting operation of a tensioning block on a sleeve column is achieved, abutting joint is conducted on the inner wall of the end of the cylinder barrel, and the inner wall of the end of the cylinder barrel is achieved along with continuous movement of the tensioning block. And the grinding block can be moved to the end face of the cutting cylinder barrel to be matched with a sleeve column in the moving and rotating process of the transmission assembly to grind the end face of the cutting cylinder barrel, the cutting and end face grinding work of the cylinder barrel of the air cylinder can be completed without station adjustment, and the overall machining efficiency of the cylinder barrel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder barrel forming, in particular to a cylinder barrel pipe cutting machine with a shaft tensioning component. Background Art

[0002] The cylinder barrel is the main body of the hydraulic cylinder. The inner hole is generally manufactured by precision machining processes such as boring, reaming, rolling or honing, so that the piston and its seals and supports can slide smoothly to ensure the sealing effect and reduce wear.

[0003] The cylinder barrel is subjected to great hydraulic pressure during use, so it must have sufficient strength and rigidity. For the customization and acquisition of cylinder barrels of specific sizes, most hydraulic cylinder barrels are processed by cutting and segmenting. For example, the patent publication number CN116276113A mentions that the cylinder barrel surface is marked according to the size mark, and then the hanging end of the cylinder barrel is cut with a cutting tool. Finally, the cut cylinder barrel is re-fixed on the workbench and the two cross sections of the cylinder barrel are polished and smoothed with a grinding tool to facilitate the welding of the sealing cover at the cross section of the cylinder barrel.

[0004] To this end, the adjustment handle is used to drive the first rotating shaft to rotate, and the rotation of the first rotating shaft drives the gear ring to rotate, and then the second gear and the rack cooperate to simultaneously drive the multiple clamping plates to move in the direction of the cylinder to be cut, until the multiple clamping plates respectively abut against the outer wall of the cylinder to be cut, thereby fixing the cutting cylinder to the fixed plate; however, the above patent content only uses a tensioning method to ensure that one end of the cylinder is stable during cutting. During the cutting process, as the cylinder rotates, the cylinder with only one end stabilized is prone to vibration, causing vibration marks on the cylinder end surface; secondly, when the cylinder end surface is polished using a polishing sheet, the cylinder with one end clamped and rotated is also prone to become unstable due to its own increased length, resulting in a significant reduction in the uniformity of the cylinder end surface polishing;

[0005] For this purpose, we propose a cylinder barrel cutting machine with a shaft tensioning assembly. Summary of the Invention

[0006] The object of the present invention is to provide a cylinder barrel pipe cutting machine with a shaft tensioning assembly to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a cylinder barrel pipe cutting machine with a shaft tensioning assembly, comprising a machine base and a tightening assembly, the top of the machine base being fixed with the tightening assembly by bolts, a slide being slidably connected to the outer wall of the slide rod on the machine base and located on one side of the tightening assembly, the top of the slide being rotatably connected to the peeling assembly, and a stabilizing cutting assembly being installed on the top of the slide and located on the side of the peeling assembly;

[0008] A lock cylinder is fixed to one side of the machine base by spot welding, a sleeve is movably connected inside the lock cylinder and located on the machine base, a tensioning block is evenly slidably connected in the groove on the outer wall of the sleeve, and grinding blocks are symmetrically fixed to both sides of the tensioning block by bolts.

[0009] Furthermore, a first lock head is installed on one side of the tightening assembly, and a second lock head is installed on the other side of the tightening assembly.

[0010] Furthermore, the stabilizing cutting assembly includes a rotary sleeve and a fixed plate, the top of the slide is movably connected with the rotary sleeve, the rotary sleeve is evenly provided with inner arc grooves, the top of the slide and the rotary sleeve side is fixed with a fixed plate by bolts, the fixed plate is evenly slidably connected with an abutment block, the outer wall protrusion of the abutment block is engaged with the inner arc groove on the rotary sleeve, the top of the fixed plate is provided with an outer arc groove, a locking bolt is installed on the top of the rotary sleeve, and the locking bolt passes through the outer arc groove and abuts against the fixed plate.

[0011] Furthermore, hydraulic cylinders are evenly installed on the lock cylinder, and the hydraulic cylinders are located inside the lock cylinder and are slidably connected to an arc-shaped pressure plate.

[0012] Furthermore, a top column is slidably connected to the sleeve column, and rotating arms are symmetrically connected to the inner walls of both sides of the sleeve column. The groove on the rotating arm is engaged with the protrusion on the outer wall of the tension block, and the other side of the rotating arm is in contact with the groove on the outer wall of the top column.

[0013] Furthermore, an electric push rod is fixed to the outer wall of the machine base by bolts, and a fixed pad at the end of the electric push rod abuts against the side of the top column passing through the sleeve column. A return spring is installed on the other side of the top column and on the inner wall of the sleeve column, and a transmission assembly is installed on the machine base.

[0014] The method for cutting the cylinder barrel with the shaft tensioning assembly is as follows:

[0015] Fixed-length pipe cutting: Use the side pushing mechanism of the machine base to push the cylinder tube into the lock head 1 and the lock head 2, and then pass through the rotary sleeve and the fixed disk in sequence to sleeve the tightening block on the surface of the sleeve column. Rotate the rocker arm according to the cutting size of the cylinder, and then move the entire slide so that the cutting blade on the peeling assembly is vertically aligned with the mark line on the outer wall of the cylinder. Rotate the rocker arm to fix the slide again, and rotate the rotary sleeve to move the abutment block on the fixed disk to the outer wall of the cylinder. Fix the rotary sleeve by rotating the locking bolt. At this time, control the electric push rod to squeeze the top column on the sleeve column side. While the rotating arm rotates, push the tightening block to tighten against the inner wall of the cylinder. At the same time, start the tightening assembly and peeling assembly. The tightening assembly drives the cylinder to rotate. At the same time, the peeling assembly controls the cutting blade to contact the surface of the cylinder and sprays liquid to cool it down.

[0016] End face grinding: The pushing mechanism continues to push the cylinder tube to move, and the cut cylinder moves into the lock cylinder. At this time, the cut end face of the cut cylinder is located on the side of the tensioning block, and the cylinder tube is pulled back by the pushing mechanism so that the cut end face comes to the other side of the tensioning block. The electric push rod pushes the rotating arm to rotate while the hydraulic cylinder pushes the arc-shaped pressure plate to abut the surface of the cut cylinder, and finally the grinding blocks on both sides of the tensioning block contact the cut end faces on both sides of the cylinder, and then the transmission assembly is used to drive the sleeve to rotate, and the rotating grinding blocks complete the grinding of the cut end face of the cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a two-outer-one-inner cylinder clamping method, wherein the locking head 1 and the locking head 2 on the tightening assembly are segmented and stable, and the position of the stabilizing cutting assembly on the slide on the top of the machine base is flexibly changed to achieve stable cutting of the cylinder. At the same time, it is avoided that when the cylinder is rotating for cutting, the vibration amplitude of the end of the cylinder away from the cutting surface increases due to the fixed contact between the cutter head and the cylinder, which is easy to cause more vibration marks on the cutting surface if it is not stabilized. The sleeve is pushed by the top column, driving the rotating arm on the inner wall to rotate, thereby pushing out the two tightening blocks on the outer wall of the sleeve, achieving stability of the end away from the cylinder, making the overall cutting of the cylinder more stable and the cutting end surface of the cylinder more uniform;

[0019] 2. In the present invention, on the basis of clamping the two outer and one inner cylinders, the grinding blocks installed on both sides of the tensioning block are used to continuously move unilaterally and push out through the rotating arm, and then the multiple arc-shaped pressure plates on the inner side of the lock cylinder are used to stabilize the cylinder under the action of the hydraulic cylinder. With the cylinder clamped stably, the sleeve is driven by the motor to rotate on the machine base as a whole to complete the grinding work of the two end faces of the cylinder after the entire cutting. The cylinder with multiple limit positions is more stable, and relatively, the grinding of the cylinder end face is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a cylinder barrel pipe cutting machine with a shaft tensioning assembly according to the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of the first and second lock heads on both sides of the tightening assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the main structure of a cylinder barrel cutting machine with a shaft tensioning assembly according to the present invention;

[0023] Figure 4 This is a schematic diagram of the installation structure of the slide bracket on the machine base slide bar of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the inner arc groove in the rotary sleeve of the present invention;

[0025] Figure 6This is a schematic diagram of the structure of the connecting tension block and the top column at the end of the rotating arm of the present invention;

[0026] Figure 7 The present invention is a flowchart of the working process of the cylinder barrel pipe cutting machine with a shaft tensioning assembly.

[0027] In the figure: 1. Machine base; 2. Tightening assembly; 3. Lock head 1; 4. Lock head 2; 5. Slide; 6. Rocker arm; 7. Peeling assembly; 8. Steady cutting assembly; 801. Rotary sleeve; 802. Inner arc groove; 803. Fixed plate; 804. Abutment block; 805. Locking bolt; 806. Outer arc groove; 9. Lock cylinder; 10. Hydraulic cylinder; 11. Arc pressure plate; 12. Sleeve column; 13. Rotating arm; 14. Tensioning block; 15. Grinding block; 16. Push column; 17. Return spring; 18. Electric push rod; 19. Transmission assembly. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , the present invention provides a technical solution:

[0030] Example 1: Cylinder forming and cutting usually uses a clamp to clamp both sides of the cutting end tube wall. Considering the different placement of the clamp, the weak vibration generated by the cutting is amplified on the cutting end cylinder, resulting in chatter marks on the end surface of the cylinder cutting end and damaging the tool. Therefore, to further improve the stability of the cylinder clamping, a tensioning assembly is installed on one side of the machine base 1 to internally support and fix the cylinder end away from the side, thereby improving the overall cylinder cutting accuracy;

[0031] like Figure 1 As shown, the top of the entire machine base 1 is provided with a tightening component 2, a peeling component 7 and a sleeve 12, wherein a lock head 3 and a lock head 2 4 are installed on both sides of the tightening component 2, and the long tube of the cylinder is inserted from the side of the lock head 3, and the pushing component installed on the side of the machine base 1 is used to continuously push the cylinder toward the side of the sleeve 12, and after passing through the peeling component 7 on the slide 5, the length of the peeling blade abutting the cylinder is measured, and after reaching the cutting size of the cylinder, the steady cutting component 8 on the slide 5 is manually rotated to complete the cutting and tightening of the outer wall of the cylinder, and at the same time, the lock head 1 3 and the lock head 2 4 on the tightening component 2 complete the rotation and clamp the outer wall of the cylinder, thus completing the fixation of the two sides of the cutting surface of the cylinder, and finally the tightening mechanism is used to drive the entire cylinder to perform rotary cutting;

[0032] However, considering that the vibration generated during the cylinder cutting process moves along the pipe wall to the end of the pipe, the vibration amplitude is further increased. In order to improve the overall stability of the cylinder cutting and avoid serious vibration marks on the cut end surface of the cylinder, the cylinder is moved onto the sleeve 12 and the tensioning block 14 installed on the sleeve 12 is used to abut against the inner wall of the cylinder. After the outer walls of both sides of the cylinder are locked and the end is stabilized, the rocker arm 6 on the slide rod surface on the machine base 1 is manually rotated to drop the top block used to lock the position of the slide 5, and the slide 5 is actively moved to the position on the machine base 1 and then locked.

[0033] Before cutting, the 8 stable cutting components are manually locked. Figure 4 As shown, a locking hole is provided on the top of a rotary sleeve 801 movably connected to the slide 5, and a fixed plate 803 is fixedly connected to the side of the rotary sleeve 801. The fixed plate 803 has an outer arc groove 806. A locking bolt 805 installed on the side of the lock hole is located on the side of the fixed plate 803. Whenever the rotary sleeve 801 is fixed in position, the locking bolt 805 is rotated from the side of the fixed plate 803 to fix the position of the entire rotary sleeve 801.

[0034] When adjusting the position of the rotary sleeve 801, Figure 5 As shown, inner arc grooves 802 are evenly opened on the inner side of the rotary sleeve 801, and the side protrusions of the abutment blocks 804 slidably connected to the fixed plate 803 are snapped into the corresponding inner arc grooves 802. Whenever the rotary sleeve 801 rotates, the position of the inner arc groove 802 changes, causing the abutment blocks 804 in the inner arc groove 802 to slide along the arc surface. However, they are restricted by the grooves on the fixed plate 803 and can only slide on the inner wall of the fixed plate 803 and abut against the outer wall of the penetrating cylinder. A peeling assembly 7 is also rotatably connected to the slide 5.

[0035] like Figure 2 As shown, the unupgraded peeling assembly 7 usually relies on manual rotation and pressing to move the cutting blade on the peeling assembly 7 to the surface of the cylinder, and high-speed cutting is performed as the entire cylinder rotates. The peeling assembly 7 can be adjusted later to automatically drive the entire peeling assembly 7 upper cover to rotate and achieve the cutting work on the outer wall of the cylinder;

[0036] Through the two outer and one inner cylinder fixing method, the cylinder is cut at high speed in conjunction with the rotation of the tightening mechanism, ensuring the overall stability of the cylinder during cutting and improving the flatness of the cut end surface of the cylinder.

[0037] Example 2: Depending on the flatness of the cylinder section, it is usually necessary to perform cutting and end face grinding in another workshop. The partitioning method of cutting first and then grinding reduces the overall processing speed. After the cylinder section is completed, the tensioning block 14 used for internal support and tightening on the entire sleeve 12 can also be subjected to the cylinder end face grinding process;

[0038] like Figure 6 As shown, considering the position adjustment of the tightening block 14 on the sleeve column 12, the entire sleeve column 12 is movably connected to the machine base 1, and the inner wall of the sleeve column 12 is symmetrically rotated and connected to the rotating arm 13, wherein the tightening block 14 is located in the hole on the outer wall of the sleeve column 12 and is slidably connected to the end of the rotating arm 13, and the other end of the rotating arm 13 abuts against the outer wall of the top column 16 slidably connected to the sleeve column 12, and the outer wall of the top column 16 is installed with a fixed sleeve, and the side protrusion of the rotating arm 13 abuts against the fixed sleeve;

[0039] When the top column 16 moves to the left, the top column 16 slides and pushes the entire rotating arm 13 to rotate. When the rotating arm 13 rotates, the tensioning block 14 on the other side of the rotating arm 13 begins to move toward the outside of the sleeve column 12 and supports the cylinder sleeved on the outside of the sleeve column 12. The reverse movement of the top column 16 pulls the tensioning block 14 back.

[0040] As for the position control of the entire top column 16 in the sleeve column 12, Figure 3 As described above, an electric push rod 18 is installed on one side of the machine base 1, and a push plate is fixed at the end of the electric push rod 18 to contact the end of the top column 16 located outside the sleeve column 12. When the tensioning block 14 needs to be supported internally, the top column 16 is pushed inward and disengaged from the abutment of the electric push rod 18. The reset spring 17 at the end of the top column 16 is activated to achieve the reset of the entire top column 16.

[0041] When the entire cylinder is cut off, Figure 7 As shown, at this time, the rear cylinder continues to push the material, and the cut cylinder will be pushed into the lock cylinder 9, as shown in FIG. Figure 2 As shown, hydraulic cylinders 10 are evenly installed on the outer wall of the lock cylinder 9. The hydraulic cylinder 10 is located inside the lock cylinder 9 and is fixedly connected to an arc-shaped pressure plate 11. The arc-shaped pressure plate 11 contacts the cylinder entering the lock cylinder 9 under the action of the hydraulic cylinder 10, thereby completing the abutment and fixation of the outer wall of the cylinder.

[0042] When the entire cylinder is loading, the displacement distance of the cutting cylinder needs to be controlled so that the end face of the cutting cylinder comes to the cut surface on one side of the tensioning block 14, and the other side of the cylinder is pulled in the opposite direction by the external pushing mechanism, so that the cutting end face is located on the cut surface on the other side of the tensioning block 14, accompanied by the top column 16 continuously squeezing the return spring 17 on the other side, the tensioning block 14 that continues to extend outward makes the grinding blocks 15 installed on both sides contact the end face of the cutting cylinder, and presses against the outer wall of the cylinder through the arc pressure plate 11 and the lock head 3, the lock head 4 and the abutment block 804. At this time, the two sides of the cutting cylinder are pressed against the surface of the grinding block 15, and the sleeve column 12 can be rotated as a whole to complete the grinding work on the end face of the cutting cylinder;

[0043] In order to realize the rotation of the sleeve 12, a transmission component 19 is installed on the machine base 1. Figure 1As shown, the transmission assembly 19 realizes the rotation of the pulley on the outer wall of the sleeve column 12 through the pulley at the end of the motor and the sleeve belt. The high-speed rotating sleeve column 12 drives the outer grinding block 15 of the tensioning block 14 to contact the end face of the cylinder, thereby realizing the rapid grinding of the cylinder after cutting. After the processing of the feeding end of the cylinder is completed, the outer pushing structure drives the cylinder to move, and the operator takes out the cut and formed cylinder.

[0044] The working process of the present invention is as follows: the side pusher mechanism of the machine base 1 pushes the cylinder tube into the lock head 1 3 and the lock head 2 4, and then sequentially passes through the rotary sleeve 801 and the fixed plate 803 and is sleeved on the tensioning block 14 on the surface of the sleeve column 12. The rocker arm 6 is rotated according to the cutting size of the cylinder, and the locking block abutting the slide rod falls off. Then the entire slide 5 is moved so that the cutting blade on the peeling assembly 7 is vertically aligned with the marking line on the outer wall of the cylinder. The rocker arm 6 is rotated again to fix the slide 5, and the position of the slide 5 on the machine base 1 is completed.

[0045] The rotary sleeve 801 is rotated so that the abutment block 804 on the fixed disk 803 moves to the outer wall of the cylinder, and the rotary sleeve 801 is fixed by rotating the locking bolt 805. At this time, the electric push rod 18 is controlled to squeeze the top column 16 on the side of the sleeve column 12. The rotating arm 13 rotates and pushes the tightening block 14 to press against the inner wall of the cylinder. At the same time, the tightening component 2 and the peeling component 7 are started. The tightening component 2 drives the cylinder to rotate. At the same time, the peeling component 7 is manually controlled so that the cutting blade on the peeling component 7 contacts the surface of the cylinder. At the same time, liquid is sprayed to cool down, completing the rotary cutting work of the cylinder.

[0046] The pushing mechanism continues to push the cylinder tube to move, and the cut cylinder moves into the locking cylinder 9. At this time, the cut end face of the cut cylinder is located on the side of the tensioning block 14, and the cylinder tube is pulled back by the pushing mechanism so that the cut end face comes to the other side of the tensioning block 14. The electric push rod 18 pushes the rotating arm 13 to rotate while the hydraulic cylinder 10 pushes the arc pressure plate 11 to abut the surface of the cut cylinder. The top column 16 continues to move to one side, and finally the grinding blocks 15 on both sides of the tensioning block 14 contact the cut end faces on both sides of the cylinder. The transmission assembly 19 is then used to drive the sleeve column 12 to rotate. The rotating grinding block 15 completes the grinding work of the cylinder cut end face, and then the pushing assembly drives the cylinder tube to move backward, and the operator takes out the cut cylinder.

[0047] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cylinder barrel cutting machine with a shaft tensioning assembly, comprising a machine base (1) and a tightening assembly (2), characterized in that: The top of the machine base (1) is fixed with a tightening assembly (2) by bolts, the outer wall of the slide rod on the machine base (1) and located on one side of the tightening assembly (2) is sleeved with a slide (5) for sliding connection, the top of the slide (5) is rotatably connected with a peeling assembly (7), and the top of the slide (5) and located on the side of the peeling assembly (7) is installed with a stabilizing cutting assembly (8); A lock cylinder (9) is fixed to one side of the machine base (1) by spot welding, a sleeve column (12) is movably connected inside the lock cylinder (9) and located on the machine base (1), a tension block (14) is evenly slidably connected in a groove on the outer wall of the sleeve column (12), and grinding blocks (15) are symmetrically fixed to both sides of the tension block (14) by bolts.

2. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 1, characterized in that: A lock head 1 (3) is installed on one side of the tightening assembly (2), and a lock head 2 (4) is installed on the other side of the tightening assembly (2).

3. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 2, characterized in that: The stabilizing cutting assembly (8) comprises a rotary sleeve (801) and a fixed plate (803); the top of the slide (5) is movably connected with the rotary sleeve (801); the rotary sleeve (801) is evenly provided with inner arc grooves (802); the top of the slide (5) and located on the side of the rotary sleeve (801) is fixed with a fixed plate (803) by bolts; an abutment block (804) is evenly slidably connected with the fixed plate (803); the outer wall protrusion of the abutment block (804) is engaged with the inner arc groove (802) on the rotary sleeve (801); the top of the fixed plate (803) is provided with an outer arc groove (806); a locking bolt (805) is installed on the top of the rotary sleeve (801); the locking bolt (805) passes through the outer arc groove (806) and abuts against the fixed plate (803).

4. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 3, characterized in that: The lock cylinder (9) is evenly mounted with a hydraulic cylinder (10), and the hydraulic cylinder (10) is located inside the lock cylinder (9) and is slidably connected with an arc-shaped pressure plate (11).

5. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 4, characterized in that: A top column (16) is slidably connected inside the sleeve column (12), and rotating arms (13) are symmetrically rotatably connected to the inner walls of both sides of the sleeve column (12), the upper groove of the rotating arm (13) is engaged with the outer wall protrusion of the tension block (14), and the other side of the rotating arm (13) is in contact with the outer wall groove of the top column (16).

6. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 1, characterized in that: An electric push rod (18) is fixed to the outer wall of the machine base (1) by bolts, and a fixing pad at the end of the electric push rod (18) abuts against the side of the top column (16) penetrating the sleeve column (12). A return spring (17) is installed on the other side of the top column (16) and located on the inner wall of the sleeve column (12). A transmission assembly (19) is installed on the machine base (1).

7. The cylinder tube cutting machine with a shaft tensioning assembly according to claim 6, characterized in that: The cylinder barrel tube cutting processing method with the shaft tensioning assembly is as follows: Fixed-length pipe cutting: Use the side push mechanism of the machine base (1) to push the cylinder tube into the lock head 1 (3) and the lock head 2 (4), then pass through the rotary sleeve (801) and the fixed plate (803) in sequence and sleeve the tension block (14) on the surface of the sleeve column (12), rotate the rocker (6) according to the cutting size of the cylinder, and then move the entire slide (5) so that the cutting blade on the rotary cutting assembly (7) is vertically aligned with the marking line on the outer wall of the cylinder, and the rocker (6) is rotated again to fix the slide (5), and the rotary sleeve (801) is rotated so that the fixed plate (803) is sleeved on the tension block (14) on the surface of the sleeve column (12). 3) The upper contact block (804) moves to the outer wall of the cylinder and fixes the rotary sleeve (801) by rotating the locking bolt (805). At this time, the electric push rod (18) is controlled to squeeze the top column (16) on the side of the sleeve column (12). The rotating arm (13) rotates and pushes the tension block (14) to press against the inner wall of the cylinder. At the same time, the tightening component (2) and the rotary cutting component (7) are started. The tightening component (2) drives the cylinder to rotate. At the same time, the rotary cutting component (7) controls the cutting blade to contact the surface of the cylinder and sprays liquid to cool it down. End surface grinding: the pushing mechanism continues to push the cylinder tube to move, and the cut cylinder moves into the lock cylinder (9). At this time, the cut end surface of the cut cylinder is located on the side of the tension block (14), and the cylinder tube is pulled back by the pushing mechanism so that the cut end surface comes to the other side of the tension block (14). The electric push rod (18) pushes the rotating arm (13) to rotate, while the hydraulic cylinder (10) pushes the arc pressure plate (11) to abut against the surface of the cut cylinder, and finally the grinding blocks (15) on both sides of the tension block (14) contact the cut end surfaces on both sides of the cylinder, and then the transmission assembly (19) drives the sleeve (12) to rotate, and the rotating grinding blocks (15) complete the grinding of the cut end surface of the cylinder.

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