Cylinder barrel cutting machine with shaft tensioner

Abstract

The present invention discloses a cylinder barrel tube cutting machine with a shaft tensioning assembly, relates to the technical field of cylinder barrel forming, and is used to solve the problem that the cylinder barrel cutting process does not carry out sufficiently stable clamping, resulting in increased vibration lines on the cut end face of the cylinder barrel; the present invention arranges a multi-position clamp on the machine base, clamps the outer wall of the cylinder barrel to be cut at multiple points, and prevents the vibration generated during the cylinder barrel rotary cutting process from affecting the end face, and utilizes an electric push rod to drive the top column to contact the rotating arm, so as to realize the external support operation of the tensioning block on the sleeve column, abuts the inner wall of the cylinder barrel end, and with the continuous movement of the tensioning block, the grinding block can be moved to the end face of the cut cylinder barrel, cooperate with the movement of the transmission assembly, and the sleeve column in the rotation process realizes the grinding work on the cut cylinder barrel end face, and the cylinder barrel cutting and end face grinding work can be completed without the need for station adjustment, thereby improving the overall processing efficiency of the cylinder barrel.

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 a large amount of hydraulic pressure during use, so it must have sufficient strength and rigidity. For the customization and acquisition of a cylinder barrel of a specific size, most of the hydraulic cylinder tubes are processed by cutting and segmenting. For example, the patent with publication number CN116276113A mentions that the cylinder barrel tube surface is marked according to the size mark, and then the suspended end of the cylinder barrel is cut with a cutting tool. Finally, the cut cylinder barrel is re-fixed on the workbench, and then the two sections of the cylinder barrel are polished and flattened with a grinding tool to facilitate welding of the sealing cover at the section position of the cylinder barrel;

[0004] To this end, the first rotating shaft is driven to rotate by the adjusting handle, 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-mentioned patent content only uses a tensioning method to ensure that one end of the cylinder is stable during cutting. During the cutting process, the cylinder rotates with only one end being stable, which is prone to vibration on the end face of the cylinder due to contact vibration. Secondly, when the end face of the cylinder is polished by a polishing sheet, the cylinder with one end clamped and rotated is also prone to become unstable due to its own increase in length, resulting in a significant reduction in the uniformity of the polishing of the end face of the cylinder.

[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 purpose, the present invention provides the following technical solutions: 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 is fixed with a tightening assembly by bolts, a slide is 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 is rotatably connected to the peeling assembly, and a stabilizing cutting assembly is installed on the top of the slide and located on the peeling assembly side;

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

[0009] Furthermore, a lock head 1 is installed on one side of the tightening assembly, and a lock head 2 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 fixed plate on the rotary sleeve side is fixed by bolts, an abutment block is evenly slidably connected to the fixed plate, the outer wall protrusion of the abutment block is clamped 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 inside the sleeve column, and rotating arms are symmetrically rotatably connected to the inner walls of both sides of the sleeve column. The groove on the rotating arm is clamped 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 cylinder barrel tube cutting processing method with the shaft tensioning assembly is as follows:

[0015] Fixed-length pipe cutting: Use the side push 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 and sleeve the tension block on the surface of the sleeve column. According to the cutting size of the cylinder, rotate the rocker arm, and then move the entire slide so that the cutting blade on the rotary cutting component is vertically aligned with the marking line on the outer wall of the cylinder. Rotate the rocker arm to fix the slide again, rotate the rotary sleeve to move the abutment block on the fixed disk to the outer wall of the cylinder, and fix the rotary sleeve by rotating the locking bolt. At this time, control the electric push rod to squeeze the top column on the side of the sleeve column. While the rotating arm rotates, push the tension block to press against the inner wall of the cylinder, and start the tightening assembly and the rotary cutting assembly at the same time. The tightening assembly drives the cylinder to rotate, and the rotary cutting assembly controls the cutting blade to contact the surface of the cylinder, and sprays liquid to cool down at the same time;

[0016] End face grinding: The pushing mechanism continues to push the cylinder tube to move, and the cut cylinder moves into the lock barrel. 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 pressure plate to abut the surface of the cut cylinder. 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. In the present invention, a two-outer-one-inner cylinder clamping method is adopted, wherein the lock head one and the lock head two on the tightening assembly are clamped stably in sections, and the position of the stable cutting assembly on the top slide of the machine base is flexibly changed to achieve stable cutting of the cylinder, and at the same time, when the cylinder is rotated for cutting, the vibration amplitude of the end of the cylinder away from the cutting surface is increased due to the fixed contact between the cutter disc and the cylinder, which is easy to cause more vibration marks on the cutting surface without stability. The sleeve column is pushed by the top column to drive the rotating arm on the inner wall to rotate, thereby pushing out the two tension blocks on the outer wall of the sleeve column, 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 and push out on one side through the rotating arm, and then the multiple arc-shaped pressure plates on the inner side of the locking cylinder are used to stabilize the cylinder under the action of the hydraulic cylinder. With the stable clamping of the cylinder, the sleeve is driven by the motor to rotate on the machine base as a whole, and the grinding work of the two end faces of the cylinder after the entire cutting is completed. 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 It is a schematic diagram of the overall structure of the cylinder barrel pipe cutting machine with a shaft tensioning assembly of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation of the lock head 1 and the lock head 2 on both sides of the tightening assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of the main structure of the cylinder barrel cutting machine with a shaft tensioning assembly of 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 It 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 working flow chart of the cylinder barrel tube cutting machine with a shaft tensioning assembly.

[0027] In the figure: 1. base; 2. tightening assembly; 3. lock head 1; 4. lock head 2; 5. slide; 6. rocker arm; 7. rotary cutting 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. top column; 17. reset spring; 18. electric push rod; 19. transmission assembly. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

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

[0030] Embodiment 1: Cylinder forming cutting usually uses a clamp to clamp both sides of the cutting end tube wall. Considering the different placement positions of the clamp, the weak vibration generated by the cutting is amplified on the cylinder at the cutting end, resulting in vibration marks on the end surface of the cylinder cutting end, damaging the tool. Therefore, in order to further improve the stability of the cylinder clamping, a tightening component 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 lock head 3 side, and the pushing component installed on the side of the machine base 1 is used to continuously push the cylinder toward the sleeve 12 side, 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, so that the two sides of the cutting surface of the cylinder are fixed, 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 tension block 14 installed on the sleeve 12 is used to complete the contact with 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 surface of the slide rod 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 fixing plate 803 is fixedly connected to the side of the rotary sleeve 801. The fixing plate 803 is provided with an outer arc groove 806. A locking bolt 805 installed on the side of the locking hole is located on the side of the fixing plate 803. Whenever the position of the rotary sleeve 801 is fixed, the locking bolt 805 is rotated from the side of the fixing plate 803, and the position of the entire rotary sleeve 801 is fixed by using the locking bolt 805.

[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 disk 803 are inserted 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, but are restricted by the grooves on the fixed disk 803 and can only slide on the inner wall of the fixed disk 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 along with the rotation of the entire cylinder. The peeling assembly 7 can be adjusted later to automatically drive the entire peeling assembly 7 upper cover to rotate and realize 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 coordination 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] Embodiment 2: According to the flatness of the cylinder section, it is usually necessary to grind the cutting end face in another workshop. The partitioning treatment method of cutting first and then grinding leads to a decrease in the overall processing process rate. After the cylinder section is cut, the tension block 14 used for internal support tensioning on the entire sleeve 12 can also be polished on the cylinder end face;

[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 with the rotating arm 13, wherein the tightening block 14 is located in the hole of 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 is abutted against the outer wall of the top column 16 slidably connected in 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 tension block 14 located on the other side of the rotating arm 13 starts to move to 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 tension 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 one end of the top column 16 located outside the sleeve column 12. When the tension block 14 needs to be supported internally, the top column 16 is pushed to move inward and the electric push rod 18 is disengaged from the abutment, and the reset spring 17 at the end of the top column 16 is actuated to realize 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, the outer wall of the lock cylinder 9 is evenly installed with a hydraulic cylinder 10, and the hydraulic cylinder 10 is located in the lock cylinder 9 and is fixedly connected with an arc-shaped pressing plate 11. The arc-shaped pressing plate 11 contacts the cylinder entering the lock cylinder 9 under the action of the hydraulic cylinder 10, thereby completing the abutment and fixing 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 tension 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 tension block 14, accompanied by the top column 16 continuously squeezing the other side of the return spring 17, the tension 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 of the end face of the cutting cylinder;

[0043] In order to realize the rotation of the sleeve 12, a transmission assembly 19 is installed on the 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 sleeved 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 barrel, thereby realizing the rapid grinding of the cylinder barrel after cutting. After the processing of the feeding end of the cylinder barrel is completed, the outer pushing structure drives the cylinder barrel to move, and the operator takes out the cut and formed cylinder barrel.

[0044] The working process of the present invention is as follows: the side push mechanism of the machine base 1 pushes the cylinder tube into the lock head 1 3 and the lock head 2 4, and then passes through the rotary sleeve 801 and the fixed plate 803 in sequence and sleeves on the tension block 14 on the surface of the sleeve column 12, and the rocker arm 6 is rotated according to the cutting size of the cylinder, and the lock block abutting the slide rod falls off, and 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, and the rocker arm 6 is rotated again to fix the slide 5, and the position locking of the slide 5 on the machine base 1 is completed;

[0045] The rotary sleeve 801 is rotated so that the contact 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, and the rotating arm 13 rotates while pushing the tension block 14 to press against the inner wall of the cylinder, and 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, and liquid is sprayed to cool down at the same time, 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 used to drive the sleeve column 12 to rotate, and the rotating grinding blocks 15 complete the grinding of the cut end face of the cylinder. 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. The technicians in this technical field may make various modifications or additions to the specific embodiments described 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 should all fall within the protection scope of the present invention.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. 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 upper slide rod of 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; 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 to an arc-shaped pressure plate (11); 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); 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).

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); a protrusion on the outer wall of the abutment block (804) is engaged with the inner arc groove (802) on the rotary sleeve (801); an outer arc groove (806) is provided on the top of the fixed plate (803); 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 processing method of the cylinder barrel cutting machine with a 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 arm (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, rotate the rocker arm (6) again to fix the slide (5), and rotate the rotary sleeve (801) so that the fixed plate (803) is aligned with the outer wall of the cylinder. 3) The upper abutment 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 column (12) to rotate, and the rotating grinding blocks (15) complete the grinding of the cut end surface of the cylinder.

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