A multi-tool lathe for machining cylinder liners, with a tool holder that is convenient for disassembly and assembly

Abstract

The present invention relates to the technical field of lathes, and specifically relates to a multi-tool lathe for machining cylinder liners with a tool holder that is convenient for disassembly and assembly, including a lathe bed body. A moving table is installed on the lathe bed body. One end of the moving table is fixedly provided with a bearing vertical plate. Mounting through holes are symmetrically opened on the bearing vertical plate, and positioning grooves are symmetrically opened on the moving table. Locking insertion holes are symmetrically opened at both ends inside the positioning grooves, and cooperating connecting plates are symmetrically and fixedly provided on both sides of one end of the moving table close to the bearing vertical plate. Insertion channels are opened on the cooperating connecting plates. When installing the tool holder, place the two tool holders on the moving table at the same time. The positioning of the tool holder is achieved through the cooperation of the bearing positioning plate and the positioning groove. Then, by pushing the driving connecting plate, the synchronous installation of the two tool holders can be achieved under the action of the installation insertion rod. At the same time, the automatic locking of the driving connecting plate can also be realized to ensure the firmness of the tool holder installation. The operation is simple, convenient, and fast.

Description

Technical Field

[0001] The invention relates to the technical field of lathes, in particular to a multi-tool lathe with a detachable tool holder for machining a cylinder sleeve. Background Art

[0002] The cylinder liner is a cylindrical part, which is placed in the cylinder body hole of the engine body and is fixed by the cylinder head. When the cylinder liner is processed, a multi-tool lathe is used for processing, which has high processing efficiency and good processing quality. However, the multi-tool lathe adopts a double tool holder, and the tool holder carries the tool. The tool holder of the existing multi-tool lathe is fixedly installed by bolts. In order to ensure the stability and firmness of the tool holder during work, it is necessary to apply torque to the tool holder after it is installed. Although this installation method is relatively simple, it is time-consuming and labor-intensive to operate. When both tool holders need to be installed and removed, the two tool holders need to be installed and removed one by one, which is inefficient and cannot achieve quick installation and removal of the tool holder, thereby affecting the use of the lathe. Summary of the invention

[0003] The object of the present invention is to provide a multi-tool lathe with a detachable tool holder for machining cylinder sleeves, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A multi-tool lathe with a detachable tool holder for processing cylinder sleeves comprises a lathe bed, a movable platform is installed on the lathe bed, a bearing vertical plate is fixedly provided at one end of the movable platform, mounting through holes are symmetrically provided on the bearing vertical plate, and positioning grooves are symmetrically provided on the movable platform, locking holes are symmetrically provided at both ends of the inner side of the positioning groove, and matching connecting plates are symmetrically fixedly provided on both sides of one end of the movable platform close to the bearing vertical plate, a plug-in channel is provided on the matching connecting plate, a limiting hole is provided on the lower side of the plug-in channel, and the limiting hole is connected with the plug-in channel, a matching positioning plate is symmetrically fixedly provided on the end of the movable platform away from the bearing vertical plate, a matching groove is provided on the matching positioning plate, and connecting lock holes are symmetrically provided on the matching positioning plate, and a convenient and detachable tool holder mechanism is installed on the movable platform.

[0006] Preferably, the convenient and detachable tool holder mechanism includes a driving connecting plate, a release plate, a tool holder body, a connecting plate, a connecting strip, a driving column, a second connecting spring and a locking plug rod, and the driving connecting plate is symmetrically fixed with mounting plug rods, the mounting plug rods are inserted in the mounting through hole, and the first connecting spring is sleeved on the mounting plug rod.

[0007] Preferably, convex supporting plates are symmetrically and fixedly arranged on the driving connecting plate. An activity fitting hole is formed in the convex supporting plate. Supporting carrier plates are symmetrically and fixedly arranged at both ends of the driving connecting plate. A positioning insertion hole is formed in the supporting carrier plate. Release plates are symmetrically installed on the driving connecting plate. An activity insertion rod is fixedly arranged at one end of the release plate. The activity insertion rod is inserted into the activity fitting hole. A limiting block is fixedly arranged on the activity insertion rod. A pushing column is fixedly arranged at the other end of the release plate. The pushing column is inserted into the positioning insertion hole.

[0008] Preferably, a tool rest body is installed on the moving table. An interlock insertion hole is formed at one end of the tool rest body close to the bearing vertical plate. An activity channel is formed at the lower end of the tool rest body. The activity channel communicates with the interlock insertion hole. Bearing positioning plates are symmetrically and fixedly arranged on the tool rest body on both sides of the activity channel. The bearing positioning plates are inserted into the positioning grooves.

[0009] Preferably, bearing blocks are symmetrically and fixedly arranged at both ends of the bearing positioning plate. A supporting insertion hole is formed in the bearing block. An insertion hole is formed in the tool rest body inside the bearing positioning plate. An installation groove is formed at one end of the tool rest body where the activity channel is located. A through hole is formed in the installation groove. A fitting carrier rod is fixedly arranged in the installation groove. A supporting block is fixedly arranged in the activity channel. A plugging through hole is formed in the supporting block. Guide supporting rods are symmetrically and fixedly arranged at both ends of the supporting block.

[0010] Preferably, a connecting link plate is inserted into the activity channel. A plugging connecting rod is fixedly arranged on the connecting link plate. The plugging connecting rod is inserted into the plugging through hole. A fitting bottom plate is fixedly arranged at the lower end of the plugging connecting rod. Pushing inclined planes are symmetrically and fixedly arranged on both sides of the fitting bottom plate. First connecting hinge rods are symmetrically hinged at both ends of the connecting link plate. The lower end of the first connecting hinge rod at one end of the connecting link plate is hinged with a connecting strip. The lower end of the first connecting hinge rod at the other end of the connecting link plate is hinged with a driving column.

[0011] Preferably, a fitting insertion hole is formed in the connecting strip. The guide supporting rod at one end of the supporting block is inserted into the fitting insertion hole. A bearing connecting plate is fixedly arranged at one end of the connecting strip. A plugging lock column is fixedly arranged on the bearing connecting plate.

[0012] Preferably, part of the driving column is inserted into the interlock insertion hole. A guide connecting hole is formed in the driving column. The guide supporting rod at the other end of the supporting block is inserted into the guide connecting hole. Second connecting springs are respectively sleeved on the guide supporting rods at both ends of the supporting block. A second connecting hinge rod is hinged on the driving column. The other end of the second connecting hinge rod is hinged with a movable carrier plate.

[0013] Preferably, support mating holes and assembly insertion holes are formed in the movable carrier plate. A mating carrier rod is inserted into the support mating hole, and an assembly carrier rod is inserted into the assembly insertion hole. A locking plug is fixedly arranged on the assembly carrier rod. The locking plug is inserted into the through hole. A fixed insertion post is arranged on the fixing plate of the locking plug, and an elastic connecting piece is fixedly arranged on the locking plug. The other end of the elastic connecting piece is fixed on the movable carrier plate.

[0014] Preferably, locking insertion rods are symmetrically installed on the bearing positioning plate. The locking insertion rods are inserted into the support insertion holes. A mating carrier plate is fixedly arranged on the locking insertion rods. A driving rod is fixedly arranged on the mating carrier plate. A third connecting spring is sleeved on the locking insertion rods.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, and has the following advantages:

[0016] 1. When installing the tool rest, place the two tool rests on the moving table at the same time. The positioning of the tool rest is realized through the cooperation of the bearing positioning plate and the positioning groove. Then, by pushing the driving connecting plate, the synchronous installation of the two tool rests can be realized under the action of the installation insertion rod. At the same time, the automatic locking of the driving connecting plate can also be realized, ensuring the firmness of the tool rest installation. The operation is simple, convenient and fast. When disassembling the tool rest, the synchronous unlocking of the tool rest can also be realized.

[0017] 2. When pushing the driving connecting plate, the installation insertion rod will be inserted into the interlocking insertion hole to realize the first layer fixation of the tool rest. And at the same time, under the action of the installation insertion rod, the driving column will be pushed to move. Then, under the action of the driving column, the connecting connecting plate will be driven to move upward. In this way, under the drive of the connecting connecting plate, the connecting strip will move, and then the insertion lock column on the connecting strip will be inserted into the connecting lock hole to realize the second layer fixation of the tool rest.

[0018] 3. In addition, as the driving column moves, it will also drive the movable carrier plate to move, so that the locking plug on the movable carrier plate is inserted into the limit insertion hole to realize the third layer fixation of the tool rest. At the same time, the fixed insertion post will be inserted into the positioning insertion hole to realize the locking of the driving connecting plate. In addition, as the connecting connecting plate moves, under the action of the pushing inclined plane frame, the locking insertion rod will be pushed to move, and then the locking insertion rod is inserted into the locking insertion hole to realize the fourth layer fixation of the tool rest. In this way, the firmness of the tool rest installation can be fully ensured under the multi-point fixation. And when disassembling, just push the two release plates synchronously to release the driving connecting plate and then realize the unlocking of the tool rest, and it can be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of a lathe bed body.

[0020] Figure 2For Figure 1 The enlarged schematic view of part A in

[0021] Figure 3 The structural schematic view of the lathe bed.

[0022] Figure 4 For Figure 3 The enlarged schematic view of part B in

[0023] Figure 5 The assembly schematic view of the driving connecting plate.

[0024] Figure 6 The first - perspective assembly schematic view of the tool rest.

[0025] Figure 7 The second - perspective assembly schematic view of the tool rest.

[0026] Figure 8 The third - perspective assembly schematic view of the tool rest.

[0027] Figure 9 For Figure 8 The enlarged schematic view of part C in

[0028] Figure 10 The structural schematic view of the tool rest.

[0029] Figure 11 The mating schematic view of the connecting link, connecting bar, driving column and locking plug.

[0030] In the figure: 1. Lathe bed body; 11. Moving table; 12. Supporting vertical plate; 13. Installation through hole; 14. Positioning groove; 141. Locking jack; 15. Matching connecting plate; 151. Insertion channel; 152. Limiting jack; 16. Matching positioning plate; 17. Matching groove; 18. Connection lock hole; 2. Driving connecting plate; 21. Installation insertion rod; 22. First connecting spring; 23. Protruding bearing plate; 24. Movable matching hole; 25. Supporting carrier plate; 26. Positioning jack; 3. Release plate; 31. Movable insertion rod; 32. Limiting block; 33. Pushing column; 4. Tool rest body; 41. Interlocking jack; 42. Movable channel; 43. Supporting positioning plate; 44. Supporting block; 45. Supporting jack; 46. Insertion hole; 47. Installation groove; 471. Through hole; 472. Matching carrier rod; 48. Supporting block; 481. Insertion through hole; 482. Guiding bearing rod; 5. Connecting link plate; 51. Insertion connecting rod; 52. Matching bottom plate; 53. Pushing inclined plane frame; 54. First connecting hinge rod; 6. Connecting strip; 61. Matching jack; 62. Supporting connecting plate; 63. Insertion lock column; 7. Driving column; 71. Guiding connecting hole; 72. Second connecting hinge rod; 73. Movable carrier plate; 74. Supporting matching hole; 75. Assembly jack; 76. Assembly carrier rod; 77. Locking insertion block; 78. Fixed insertion column; 79. Elastic connecting piece; 8. Second connecting spring; 9. Locking insertion rod; 91. Matching carrier plate; 92. Driving rod; 93. Third connecting spring. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 11 , the present invention provides a technical solution:

[0033] A multi-tool lathe with a detachable tool holder for processing a cylinder sleeve comprises a lathe bed 1, on which a movable platform 11 is installed, a bearing vertical plate 12 is fixedly provided at one end of the movable platform 11, mounting through holes 13 are symmetrically provided on the bearing vertical plate 12, and a positioning groove 14 is symmetrically provided on the movable platform 11, and locking holes 141 are symmetrically provided at both ends of the inner part of the positioning groove 14, and matching connecting plates 15 are symmetrically fixedly provided at both sides of one end of the movable platform 11 close to the bearing vertical plate 12, a plug-in channel 151 is provided on the matching connecting plate 15, and a limited position hole 152 is provided on the lower side of the plug-in channel 151, and the limited position hole 152 is connected with the plug-in channel 151, a matching positioning plate 16 is symmetrically fixedly provided at one end of the movable platform 11 away from the bearing vertical plate 12, a matching groove 17 is provided on the matching positioning plate 16, and connecting lock holes 18 are symmetrically provided on the matching positioning plate 16, and a convenient and detachable tool holder mechanism is installed on the movable platform 11.

[0034] The convenient and detachable tool holder mechanism includes a driving connecting plate 2, a release plate 3, a tool holder body 4, a connecting connecting plate 5, a connecting strip 6, a driving column 7, a second connecting spring 8 and a locking plug rod 9. The driving connecting plate 2 is symmetrically fixed with a mounting plug rod 21, the mounting plug rod 21 is inserted in the mounting through hole 13, and the mounting plug rod 21 is sleeved with a first connecting spring 22, and the two ends of the first connecting spring 22 are respectively welded to the bearing vertical plate 12 and the driving connecting plate 2.

[0035] A protruding supporting plate 23 is symmetrically fixedly provided on the driving connecting plate 2, and a movable matching hole 24 is provided on the protruding supporting plate 23, and supporting carrier plates 25 are symmetrically fixedly provided at both ends of the driving connecting plate 2, and a positioning hole 26 is provided on the supporting carrier plates 25. A release plate 3 is symmetrically installed on the driving connecting plate 2, and a movable plug rod 31 is fixedly provided at one end of the release plate 3, and the movable plug rod 31 is inserted into the movable matching hole 24, and a limiting block 32 is fixedly provided on the movable plug rod 31, and a push-out column 33 is fixedly provided at the other end of the release plate 3, and the push-out column 33 is inserted into the positioning hole 26.

[0036] A tool holder body 4 is installed on the movable table 11. An interlocking hole 41 is opened at one end of the tool holder body 4 close to the bearing vertical plate 12, and a movable channel 42 is opened at the lower end of the tool holder body 4. The movable channel 42 is connected with the interlocking hole 41, and bearing positioning plates 43 are symmetrically fixed on the tool holder body 4 on both sides of the movable channel 42. The bearing positioning plates 43 are inserted into the positioning grooves 14, and the positioning of the tool holder body 4 is achieved by the cooperation between the bearing positioning plates 43 and the positioning grooves 14.

[0037] Both ends of the load-bearing positioning plate 43 are symmetrically and fixedly provided with load-bearing blocks 44. A support insertion hole 45 is formed in the load-bearing block 44, and an insertion hole 46 is formed in the tool rest body 4 inside the load-bearing positioning plate 43. An installation groove 47 is formed in the tool rest body 4 at one end of the movable channel 42. A through hole 471 is formed in the installation groove 47, and a matching load rod 472 is fixedly arranged in the installation groove 47. A support block 48 is fixedly arranged in the movable channel 42. A plug-through hole 481 is formed in the support block 48, and guide bearing rods 482 are symmetrically and fixedly arranged at both ends of the support block 48.

[0038] A connecting link plate 5 is inserted into the movable channel 42. A plugging connecting rod 51 is fixedly arranged on the connecting link plate 5. The plugging connecting rod 51 is inserted into the plug-through hole 481. A matching bottom plate 52 is fixedly arranged at the lower end of the plugging connecting rod 51. Push inclined planes 53 are symmetrically and fixedly arranged on both sides of the matching bottom plate 52. First connecting hinge rods 54 are symmetrically hinged at both ends of the connecting link plate 5. The lower end of the first connecting hinge rod 54 at one end of the connecting link plate 5 is hinged to a connecting strip 6, and the lower end of the first connecting hinge rod 54 at the other end is hinged to a driving column 7.

[0039] A matching insertion hole 61 is formed in the connecting strip 6. The guide bearing rod 482 at one end of the support block 48 is inserted into the matching insertion hole 61. A load-bearing connecting plate 62 is fixedly arranged at one end of the connecting strip 6. A plugging lock column 63 is fixedly arranged on the load-bearing connecting plate 62. In addition, the connecting strip 6 passes through the movable channel 42 and is inserted into the matching groove 17. When the plugging lock column 63 fixes the tool rest body 4, it is inserted into the connecting lock hole 18.

[0040] Part of the driving column 7 is inserted into the interlocking insertion hole 41. A guide connecting hole 71 is formed in the driving column 7. The guide bearing rod 482 at the other end of the support block 48 is inserted into the guide connecting hole 71. Second connecting springs 8 are respectively sleeved on the guide bearing rods 482 at both ends of the support block 48. A second connecting hinge rod 72 is hinged on the driving column 7. The other end of the second connecting hinge rod 72 is hinged to a movable load plate 73. In addition, the two ends of the second connecting spring 8 in contact with the connecting strip 6 are respectively welded to the support block 48 and the connecting strip 6, and the two ends of the second connecting spring 8 in contact with the driving column 7 are respectively welded to the support block 48 and the driving column 7.

[0041] The movable carrier plate 73 is provided with a support fitting hole 74 and an assembly insertion hole 75. A fitting carrier rod 472 is inserted into the support fitting hole 74, and an assembly carrier rod 76 is inserted into the assembly insertion hole 75. A locking plug 77 is fixedly arranged on the assembly carrier rod 76. The locking plug 77 is inserted into the through hole 471. A fixed insertion post 78 is arranged on the fixing plate of the locking plug 77. Moreover, an elastic connecting piece 79 is fixedly arranged on the locking plug 77, and the other end of the elastic connecting piece 79 is fixed on the movable carrier plate 73. In addition, when the locking plug 77 fixes the tool rest body 4, it is inserted into the limit insertion hole 152. When the fixed insertion post 78 fixes the driving connecting plate 2, it is inserted into the positioning insertion hole 26.

[0042] Preferably, locking plug rods 9 are symmetrically installed on the load-bearing positioning plate 43. The locking plug rods 9 are inserted into the support insertion holes 45. A fitting carrier plate 91 is fixedly arranged on the locking plug rods 9. A driving rod 92 is fixedly arranged on the fitting carrier plate 91. A third connecting spring 93 is sleeved on the locking plug rods 9, and both ends of the third connecting spring 93 are respectively welded on the fitting carrier plate 91 and the load-bearing block 44. When the locking plug rods 9 fix the tool rest body 4, they are inserted into the locking insertion holes 141.

[0043] When installing the tool rest body 4, insert the bearing positioning plate 43 on the tool rest body 4 into the positioning groove 14. The positioning of the tool rest body 4 is achieved through the cooperation between the bearing positioning plate 43 and the positioning groove 14. Then, at this time, push the driving connecting plate 2 towards the bearing vertical plate 12. As the driving connecting plate 2 moves, the installation insertion rod 21 will be inserted into the interlock jack 41. In this way, under the action of the installation insertion rod 21, the first layer fixation of the tool rest body 4 will be achieved, and under the action of the installation insertion rod 21, it will push the driving column 7 to move. As the driving column 7 moves, under the action of the first connecting hinge rod 54, it will push the connecting link plate 5 to move upward. In this way, under the action of the first connecting hinge rod 54 at the other end, it will pull the connecting strip 6 to further move into the movable channel 42. In this way, the insertion lock column 63 on the bearing connecting plate 62 can be inserted into the connecting lock hole 18 to achieve the second layer fixation of the tool rest body 4. In addition, as the driving column 7 moves, under the action of the second connecting hinge rod 72, it will also drive the movable carrier plate 73 to move, so that the locking insertion block 77 on the movable carrier plate 73 is inserted into the limit jack 152 to achieve the fourth layer fixation of the tool rest body 4. And as the locking insertion block 77 moves, the fixed insertion column 78 on the locking insertion block 77 will contact the support carrier plate 25. In this way, as the movable carrier plate 73 moves, under the restriction of the support carrier plate 25, the elastic connecting piece 79 will be in a compressed state until the fixed insertion column 78 is aligned with the positioning jack 26. At this time, under the action of the elastic connecting piece 79, the fixed insertion column 78 will be inserted into the positioning jack 26, and at the same time, the push rod 33 will be pushed out. In this way, the fixation of the driving connecting plate 2 can be achieved under the action of the fixed insertion column 78. At this time, the locking insertion block 77 is also stably inserted into the limit jack 152. Moreover, as the connecting link plate 5 moves upward, it will also drive the matching bottom plate 52 to move upward. In this way, under the action of the pushing inclined plane frame 53 on the matching bottom plate 52, it will push the driving rod 92 to move, and then drive the locking rod 9 to move, so that the locking rod 9 is inserted into the locking jack 141. In this way, the fourth layer fixation of the tool rest body 4 can be achieved under the action of the locking rod 9. The multi-point multi-layer fixation can fully ensure the firmness and stability of the installation of the tool rest body 4, and the operation is simple, convenient and fast. The synchronous installation of two tool rest bodies 4 can be realized. When the tool rest body 4 needs to be disassembled, at this time, two release plates 3 can be pushed towards each other at the same time, so that the push rod 33 on the release plate 3 is inserted into the positioning jack 26 again. In this way, under the action of the push rod 33, the fixed insertion column 78 will withdraw from the positioning jack 26. In this way, the driving connecting plate 2 can be unlocked, and it will be reset under the action of the first connecting spring 22. Then, the installation insertion rod 21 will withdraw from the interlock jack 41 to achieve the unlocking of the tool rest body 4, and the tool rest body 4 can be disassembled. The operation is very convenient, and the installation and disassembly of the tool rest body 4 can be realized without using tools.

[0044] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-tool lathe for machining cylinder liners with a knife rest that is convenient for disassembly and assembly, comprising a lathe bed (1), characterized in that: A moving table (11) is installed on the lathe bed body (1). One end of the moving table (11) is fixedly provided with a bearing vertical plate (12). Mounting through holes (13) are symmetrically formed in the bearing vertical plate (12), and positioning grooves (14) are symmetrically formed in the moving table (11). Locking jacks (141) are symmetrically formed at both ends inside the positioning groove (14). On both sides of one end of the moving table (11) close to the bearing vertical plate (12), cooperating connecting plates (15) are symmetrically and fixedly provided. A plugging channel (151) is formed in the cooperating connecting plate (15). A limiting jack (152) is formed on the lower side of the plugging channel (151). The limiting jack (152) communicates with the plugging channel (151). On both sides of the other end of the moving table (11) away from the bearing vertical plate (12), cooperating positioning plates (16) are symmetrically and fixedly provided. A cooperating groove (17) is formed in the cooperating positioning plate (16), and connecting lock holes (18) are symmetrically formed in the cooperating positioning plate (16). A convenient installation and disassembly tool rest mechanism is installed on the moving table (11). The convenient installation and disassembly tool rest mechanism includes a driving connecting plate (2), a release plate (3), a tool rest body (4), a connecting link plate (5), a connecting bar (6), a driving column (7), a second connecting spring (8), and a locking plug (9). Mounting plugs (21) are symmetrically and fixedly provided on the driving connecting plate (2). The mounting plugs (21) are inserted into the mounting through holes (13), and a first connecting spring (22) is sleeved on the mounting plugs (21). On the driving connecting plate (2), protruding bearing plates (23) are also symmetrically and fixedly provided. An activity cooperation hole (24) is formed in the protruding bearing plate (23). On both ends of the driving connecting plate (2), supporting bearing plates (25) are symmetrically and fixedly provided. A positioning jack (26) is formed in the supporting bearing plate (25). Release plates (3) are symmetrically installed on the driving connecting plate (2). One end of the release plate (3) is fixedly provided with a movable plug (31). The movable plug (31) is inserted into the activity cooperation hole (24), and a limiting block (32) is fixedly provided on the movable plug (31). The other end of the release plate (3) is fixedly provided with a pushing column (33). The pushing column (33) is inserted into the positioning jack (26). A tool rest body (4) is installed on the moving table (11). An interlocking jack (41) is formed at one end of the tool rest body (4) close to the bearing vertical plate (12). An activity channel (42) is formed at the lower end of the tool rest body (4). The activity channel (42) communicates with the interlocking jack (41). On both sides of the activity channel (42) on the tool rest body (4), bearing positioning plates (43) are symmetrically and fixedly provided. The bearing positioning plates (43) are inserted into the positioning grooves (14). Bearing blocks (44) are symmetrically and fixedly provided at both ends of the bearing positioning plates (43). A supporting jack (45) is formed in the bearing block (44). An insertion hole (46) is formed in the tool rest body (4) inside the bearing positioning plate (43).A mounting groove (47) is provided on the tool holder body (4) at one end of the movable channel (42), a through hole (471) is provided in the mounting groove (47), a matching carrying rod (472) is fixedly provided in the mounting groove (47), a supporting block (48) is fixedly provided in the movable channel (42), a plug-in through hole (481) is provided in the supporting block (48), and guide bearing rods (482) are symmetrically fixedly provided at both ends of the supporting block (48), a connecting plate (5) is plugged into the movable channel (42), and the connecting plate ( 5) is fixedly provided with a plug-in connecting rod (51), the plug-in connecting rod (51) is plugged into the plug-in through hole (481), and a matching base plate (52) is fixedly provided at the lower end of the plug-in connecting rod (51), and a pushing inclined plane frame (53) is symmetrically fixedly provided on both sides of the matching base plate (52), and first connecting hinge rods (54) are symmetrically hinged at both ends of the connecting plate (5), and the lower end of the first connecting hinge rod (54) at one end of the connecting plate (5) is hinged to a connecting strip (6), and the lower end of the first connecting hinge rod (54) at the other end is hinged to a driving column (7).

2. The multi-tool lathe for machining a cylinder liner with a knife rest that is convenient for disassembly and assembly according to claim 1, characterized in that: The connecting bar (6) is provided with a mating socket (61), into which one end of the guiding support rod (482) of the support block (48) is inserted. One end of the connecting bar (6) is fixedly provided with a bearing connecting plate (62), and a plugging lock post (63) is fixedly provided on the bearing connecting plate (62).

3. The multi-tool lathe for machining cylinder liners with a tool holder that is convenient for disassembly and assembly according to claim 2, characterized in that: Part of the driving column (7) is inserted into the interlocking socket (41), and a guiding connecting hole (71) is provided on the driving column (7). The guiding connecting hole (71) is inserted with the guiding support rod (482) at the other end of the support block (48). Second connecting springs (8) are respectively sleeved on the guiding support rods (482) at both ends of the support block (48). A second connecting hinge rod (72) is hinged on the driving column (7), and the other end of the second connecting hinge rod (72) is hinged with a movable bearing plate (73).

4. A multi-tool lathe for machining cylinder liners with a tool holder that is convenient for disassembly and assembly, as described in claim 3, wherein: The movable bearing plate (73) is provided with a support mating hole (74) and an assembly socket (75). The support mating hole (74) is inserted with a mating bearing rod (472), and the assembly socket (75) is inserted with an assembly bearing rod (76). A locking plug (77) is fixedly provided on the assembly bearing rod (76). The locking plug (77) is inserted into the through hole (471). A fixed plug post (78) is fixedly provided on the locking plug (77), and an elastic connecting piece (79) is fixedly provided on the locking plug (77). The other end of the elastic connecting piece (79) is fixed on the movable bearing plate (73).

5. A multi-tool lathe for machining a cylinder liner with a tool holder that is convenient for disassembly and assembly, as described in claim 4, wherein: Locking plug rods (9) are symmetrically installed on the bearing positioning plate (43). The locking plug rods (9) are inserted into the support sockets (45). A mating bearing plate (91) is fixedly provided on the locking plug rods (9), and a driving rod (92) is fixedly provided on the mating bearing plate (91). A third connecting spring (93) is sleeved on the locking plug rods (9).

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