Turn-milling combined type numerical control machine tool

Abstract

The invention relates to the technical field of machining, and particularly discloses a turning and milling combined type numerical control machine tool which comprises a workbench, a spindle system and a position adjusting mechanism are arranged at the upper end of the workbench, a tool rest is arranged above the position adjusting mechanism, and an angle adjusting mechanism is arranged at the lower end of the workbench and used for adjusting the position of the tool rest. The position adjusting mechanism comprises a first sliding seat and a second sliding seat, the first sliding seat is arranged at the upper end of the workbench, a first limiting groove is formed in the first sliding seat, a first threaded rod is rotationally connected into the first limiting groove, and a first motor is fixedly connected to the front end of the first sliding seat. By means of the arranged position adjusting mechanism, the tool rest can move in the front-back and left-right directions; in combination with the angle adjusting device, the position of the tool rest can be further optimized, so that the side face of the workpiece can be efficiently machined, various different machining procedures can be implemented on the same workpiece, and the flexibility and diversity of machining operation are remarkably improved through the design.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a turning-milling compound CNC machine tool. Background Art

[0002] CNC machine tools refer to mechanical equipment that uses a computer control system to precisely control the movement of the machine tool. It combines CNC technology with mechanical processing and realizes automated processing of workpieces through pre-written CNC programs. The types of CNC machine tools can be classified according to their processing methods, structural forms, processing functions, axis number configurations and other aspects. Generally, CNC lathes, CNC milling machines, and CNC drilling machines are more common types of CNC machine tools.

[0003] In the Chinese patent with the authorization announcement number CN112775669B, an ultra-precision turning and milling compound CNC machine tool is mentioned, including a bed, a spindle system for clamping a workpiece is provided on the bed, a tool holder and a driving device for driving the tool holder to move in the X direction and the Z direction are also provided on the bed, a rough milling cutter, a fine milling cutter, a rough turning tool and a fine turning tool are provided on the tool holder in sequence along the length direction of the tool holder, and a power device for driving the rough milling cutter, the fine milling cutter, the rough turning tool and the fine turning tool to rotate is provided on the tool holder. By simultaneously arranging the rough milling cutter, the fine milling cutter, the rough turning tool and the fine turning tool on the bed, only one clamping is required, and the workpiece can be milled and turned, which improves the processing efficiency and processing accuracy.

[0004] Although the above patent can achieve a variety of processing procedures for a single workpiece, when performing circumferential processing on the workpiece, the rough turning tool and the fine milling cutter on both sides may be blocked by the fixture, thereby reducing the convenience of the turning and milling process. Summary of the invention

[0005] The purpose of the present invention is to provide a turning-milling compound CNC machine tool to solve the problem in the prior art that when performing circumferential processing on a workpiece, the rough turning tool and the fine milling tool on both sides may be obstructed by the fixture, thereby reducing the convenience of the turning and milling process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A turning-milling compound CNC machine tool comprises a workbench, a spindle system and a position adjustment mechanism are arranged at the upper end of the workbench, a tool holder is arranged above the position adjustment mechanism, and an angle adjustment mechanism is arranged at the lower end of the workbench. The angle adjustment mechanism is used to adjust the position of the tool holder. The position adjustment mechanism comprises a first slide and a second slide. The first slide is arranged at the upper end of the workbench, a first limiting groove is opened inside the first slide, a first threaded rod is rotatably connected inside the first limiting groove, a first motor is fixedly connected to the front end of the first slide, an output shaft end of the first motor is fixedly connected to the front end of the first threaded rod, and the second slide is slidably connected to the upper end of the first slide.

[0008] Preferably: a first limit block is fixedly connected to the lower end of the second slide, the first limit block is located inside the first limit groove and is slidably connected thereto, the first threaded rod passes through the first limit block and is threadedly connected thereto, a second limit groove is opened on the upper end surface of the second slide, three groups of second limit grooves are arranged, and adjacent second limit grooves are connected via connecting grooves.

[0009] Preferably: a second threaded rod is rotatably connected inside a second limiting groove located in the middle of the second slide, a second motor is fixedly connected to the right end of the second slide, an output shaft end of the second motor is fixedly connected to the right end of the second threaded rod, a tool holder is provided at the upper end of the second slide, and the second slide and the tool holder are connected via a connecting lifting mechanism.

[0010] Preferably, the tool holder comprises a mounting seat and a limiting assembly, the upper end of the second slide is provided with a mounting seat, the left end of the rear side of the mounting seat is fixedly connected with a mounting block, and the left end of the mounting block is fixedly connected with a milling cutter.

[0011] Preferably: a first mounting groove is provided on the upper end surface of the mounting seat, and the first mounting groove is provided with two groups. A rotating shaft is rotatably connected inside the mounting seat, and the rotating shaft passes through the first mounting groove. A driving motor is fixedly connected to the side wall of the rotating shaft, and the driving motor is located inside the first mounting groove. A face milling cutter is fixedly connected to the output shaft of the driving motor located at the rear side of the mounting seat, and an end mill is fixedly connected to the output shaft of the driving motor located at the front side of the mounting seat, and a third motor is fixedly connected to the front end of the mounting seat, and the output shaft end of the third motor is fixedly connected to the front end of the rotating shaft.

[0012] Preferably: the limit assembly includes a first gear rod and a second gear rod, the upper end surface of the mounting seat is provided with a second mounting groove, the second mounting groove is slidably connected with a first connecting block, the left front end of the first connecting block is fixedly connected with the first gear rod, the side wall of the first gear rod abuts against the side wall of the driving motor located on the rear side of the mounting seat, the right front end of the first connecting block is fixedly connected with a connecting rod, the front end of the connecting rod is fixedly connected with the second gear rod, the side wall of the second gear rod abuts against the side wall of the driving motor located on the front side of the mounting seat, the upper end of the sliding seat is fixedly connected with a first hydraulic cylinder, and the output shaft end of the first hydraulic cylinder is fixedly connected to the rear end of the first connecting block.

[0013] Preferably: the connecting lifting mechanism includes a sleeve and a second hydraulic cylinder, a second limiting block is slidably connected inside the second limiting groove located in the middle of the second slide seat, the second threaded rod passes through the second limiting block and is threadedly connected thereto, the front and rear ends of the second limiting block are fixedly connected to second connecting blocks, the second connecting block is located inside the connecting groove and slidably connected thereto, and the end of the second connecting block away from the second limiting block is fixedly connected to the sleeve.

[0014] Preferably, the sleeve is located inside the second limiting grooves in front and behind the second slide seat and is slidably connected thereto, a telescopic rod is slidably connected inside the sleeve, and the upper end of the telescopic rod is fixedly connected to the lower end of the mounting seat.

[0015] Preferably, a reserved groove is provided on the lower end surface of the mounting seat, a second hydraulic cylinder is fixedly connected inside the reserved groove, and an output shaft end of the second hydraulic cylinder is fixedly connected to an upper end of the second limit block.

[0016] Preferably: the angle adjustment mechanism includes a fourth motor and an eccentric block, an arc groove is provided on the upper end surface of the workbench, an arc block is slidably connected inside the arc groove, the upper end of the arc block is fixedly connected to the lower end of the first slide seat, the lower end of the arc block is fixedly connected to the eccentric block, the lower end of the workbench is fixedly connected to the fourth motor through a mounting frame, and the output shaft end of the fourth motor is fixedly connected to the lower end of the eccentric block.

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

[0018] 1. The present invention utilizes the coordinated effect of the angle adjustment device, the position adjustment device and the tool holder to achieve the precise movement of the milling cutter to the side of the workpiece to complete the circumferential addition of the workpiece; by rotating the rotating shaft in the tool holder, the drive motor in the tool holder is driven to rotate, so that the drive motor is perpendicular to the horizontal plane, thereby efficiently processing the side of the workpiece. In addition, the design also allows a variety of different processing processes to be performed on a single workpiece, thereby improving the flexibility and diversity of processing.

[0019] 2. The present invention, through the coordinated action of the first hydraulic cylinder, the first connecting block, the first gear rod, the connecting rod and the second gear rod, when the first hydraulic cylinder is started, the contraction action of its telescopic rod will release the positioning restriction of the first gear rod and the second gear rod on the driving motor; at this time, the driving motor can adjust its position by rotating the rotating shaft. Once adjusted into place, the first gear rod and the second gear rod are reset to fix the driving motor to prevent it from shaking during the processing and affecting the processing quality of the workpiece.

[0020] 3. Through the coordinated work of the second limit block, the second connecting block, the sleeve, the second hydraulic cylinder and the telescopic rod, the mounting seat can not only be moved but also its height can be adjusted under the drive of the second hydraulic cylinder. Such a design enables the equipment to adapt to different types of workpieces and perform precise processing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall main structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the left-side cross-sectional structure of the workbench of the present invention;

[0023] Figure 3 It is a schematic diagram of the exploded structure of the workbench, the angle adjustment mechanism and the first slide seat of the present invention;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the position adjustment mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the explosion structure of the second slide seat, the connecting lifting mechanism and the tool holder of the present invention;

[0026] Figure 6 It is a schematic diagram of the left side cross-sectional structure of the connecting lifting mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the explosion structure of the limit assembly and the mounting seat of the present invention;

[0028] Figure 8 It is a schematic diagram of the top view of the tool holder of the present invention.

[0029] In the figure: 1, workbench; 11, arc groove; 2, spindle system; 3, position adjustment mechanism; 31, first slide; 311, first limit groove; 312, first threaded rod; 313, first motor; 32, second slide; 321, first limit block; 322, second limit groove; 323, second threaded rod; 324, second motor; 325, connecting groove; 4, tool holder; 41, mounting seat; 411, reserved groove; 412, first mounting groove; 413, second mounting groove; 42, mounting block; 421, milling cutter; 4 3. Driving motor; 431. Face milling cutter; 432. End milling cutter; 44. Limiting assembly; 441. First hydraulic cylinder; 442. First connecting block; 443. First gear lever; 444. Connecting rod; 445. Second gear lever; 45. Third motor; 46. Rotating shaft; 5. Angle adjustment mechanism; 51. Mounting frame; 52. Fourth motor; 53. Eccentric block; 54. Arc block; 6. Connecting lifting mechanism; 61. Second limiting block; 62. Second connecting block; 63. Sleeve; 64. Second hydraulic cylinder; 65. Telescopic rod. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1-Figure 8 As shown, the present invention provides a turning-milling compound CNC machine tool, including a workbench 1, a spindle system 2 and a position adjustment mechanism 3 are arranged on the upper end of the workbench 1, a tool holder 4 is arranged above the position adjustment mechanism 3, an angle adjustment mechanism 5 is arranged at the lower end of the workbench 1, the angle adjustment mechanism 5 is used to adjust the position of the tool holder 4, the position adjustment mechanism 3 includes a first slide 31 and a second slide 32, the first slide 31 is arranged at the upper end of the workbench 1, a first limiting groove 311 is opened inside the first slide 31, and a first threaded rod 312 is rotatably connected inside the first limiting groove 311 A first motor 313 is fixedly connected to the front end of the first slide 31, an output shaft end of the first motor 313 is fixedly connected to the front end of the first threaded rod 312, and a second slide 32 is slidably connected to the upper end of the first slide 31; by means of the configured position adjustment mechanism 3, the tool holder 4 can realize movement in the front, back, left and right directions; combined with the angle adjustment device, the position of the tool holder 4 can be further optimized, so that not only the side of the workpiece can be processed efficiently, but also a variety of different processing procedures can be implemented on the same workpiece. This design significantly improves the flexibility and diversity of processing operations.

[0032] In a further embodiment, referring to Figure 4A first limit block 321 is fixedly connected to the lower end of the second slide 32, the first limit block 321 is located inside the first limit groove 311 and is slidably connected thereto, the first threaded rod 312 passes through the first limit block 321 and is threadedly connected thereto, a second limit groove 322 is opened on the upper end surface of the second slide 32, and three groups of second limit grooves 322 are arranged, and adjacent second limit grooves 322 are connected through connecting grooves 325.

[0033] In this embodiment, the first motor 313 is started to drive the first threaded rod 312 to rotate, the rotation of the first threaded rod 312 drives the first limit block 321 to move, and the movement of the first limit block 321 drives the second slide 32 to move, thereby providing power for the second slide 32 to move forward and backward.

[0034] In a further embodiment, referring to Figure 5-Figure 6 The second limiting groove 322 located in the middle of the second slide 32 is rotatably connected with the second threaded rod 323, the right end of the second slide 32 is fixedly connected with the second motor 324, the output shaft end of the second motor 324 is fixedly connected with the right end of the second threaded rod 323, the upper end of the second slide 32 is provided with a tool holder 4, the second slide 32 is connected to the tool holder 4 through a connecting lifting mechanism 6, the connecting lifting mechanism 6 includes a sleeve 63 and a second hydraulic cylinder 64, the second limiting groove 322 located in the middle of the second slide 32 is slidably connected with the second limiting block 61, the second threaded rod 323 penetrates the second limiting block 61 and is threadedly connected thereto, and the second limiting The front and rear ends of the block 61 are fixedly connected with the second connecting block 62, the second connecting block 62 is located inside the connecting groove 325 and is slidably connected thereto, the end of the second connecting block 62 away from the second limiting block 61 is fixedly connected with the sleeve 63, the sleeve 63 is located inside the second limiting groove 322 before and after the second slide seat 32 and is slidably connected thereto, a telescopic rod 65 is slidably connected inside the sleeve 63, the upper end of the telescopic rod 65 is fixedly connected to the lower end of the mounting seat 41, a reserved groove 411 is provided on the lower end surface of the mounting seat 41, a second hydraulic cylinder 64 is fixedly connected inside the reserved groove 411, and the output shaft end of the second hydraulic cylinder 64 is fixedly connected to the upper end of the second limiting block 61.

[0035] In this embodiment, after the second motor 324 is started, it will drive the second threaded rod 323 to rotate, thereby pushing the second limit block 61 to move. This action realizes the left and right movement of the tool holder 4 through the coordinated action of the second connecting block 62, the sleeve 63 and the telescopic rod 65, providing power for the horizontal displacement of the tool holder 4; in addition, by activating the second hydraulic cylinder 64, the output shaft thereof extends outward, and the telescopic rod 65 slides inside the sleeve 63, driving the tool holder 4 to move upward, thereby realizing the adjustment of the height of the tool holder 4, and providing power for the vertical position change of the tool holder 4.

[0036] In a further embodiment, referring to Figure 7-Figure 8The tool holder 4 includes a mounting seat 41 and a limiting assembly 44. The mounting seat 41 is arranged on the upper end of the second slide seat 32. A mounting block 42 is fixedly connected to the left end of the rear side of the mounting seat 41. A milling cutter 421 is fixedly connected to the left end of the mounting block 42.

[0037] In this embodiment, the position of the first slide 31 is changed by starting the angle adjustment mechanism 5, thereby adjusting the mounting seat 41 so that the mounting seat 41 is located behind the workpiece, so that the milling cutter 421 is on one side of the workpiece, which facilitates the processing of the workpiece by the milling cutter 421, and avoids the situation in which the rough turning tool and the fine milling cutter 421 on both sides may not be able to proceed smoothly due to the obstruction of the fixture during the circumferential processing, thereby improving the convenience of turning and milling processing.

[0038] In a further embodiment, referring to Figure 7 A first mounting groove 412 is provided on the upper end surface of the mounting seat 41, and two groups of the first mounting grooves 412 are arranged. A rotating shaft 46 is rotatably connected inside the mounting seat 41, and the rotating shaft 46 passes through the first mounting groove 412. A driving motor 43 is fixedly connected to the side wall of the rotating shaft 46. The driving motor 43 is located inside the first mounting groove 412. A face milling cutter 431 is fixedly connected to the output shaft of the driving motor 43 located at the rear side of the mounting seat 41, and an end milling cutter 432 is fixedly connected to the output shaft of the driving motor 43 located at the front side of the mounting seat 41. A third motor 45 is fixedly connected to the front end of the mounting seat 41, and the output shaft end of the third motor 45 is fixedly connected to the front end of the rotating shaft 46.

[0039] In this embodiment, when the third motor 45 is started, it drives the rotating shaft 46 to rotate, and then drives the driving motor 43 to rotate to a position perpendicular to the horizontal plane; at this time, the driving motor 43 equipped with the face milling cutter 431 or the end milling cutter 432 is moved to the bottom of the workpiece; then, the driving motor 43 is started and its height is adjusted to perform circumferential processing on the workpiece. Such operation avoids the situation in which the rough turning tool and the fine milling cutter 421 on both sides may not be able to proceed smoothly due to obstruction of the fixture during the circumferential processing, thereby improving the convenience of turning and milling processing.

[0040] In a further embodiment, referring to Figure 7The limiting assembly 44 includes a first gear rod 443 and a second gear rod 445. The upper end surface of the mounting seat 41 is provided with a second mounting groove 413, and the first connecting block 442 is slidably connected inside the second mounting groove 413. The first connecting block 442 is fixedly connected to the first gear rod 443 at the front end on the left side, and the side wall of the first gear rod 443 abuts against the side wall of the driving motor 43 located on the rear side of the mounting seat 41. The right front end of the first connecting block 442 is fixedly connected to a connecting rod 444, and the front end of the connecting rod 444 is fixedly connected to the second gear rod 445, and the side wall of the second gear rod 445 abuts against the side wall of the driving motor 43 located on the front side of the mounting seat 41. The upper end of the sliding seat is fixedly connected to the first hydraulic cylinder 441, and the output shaft end of the first hydraulic cylinder 441 is fixedly connected to the rear end of the first connecting block 442.

[0041] In this embodiment, by starting the first hydraulic cylinder 441, the contraction action of the telescopic rod 65 will drive the first gear rod 443, the connecting rod 444 and the second gear rod 445 to move. This process releases the positioning restriction of the first gear rod 443 and the second gear rod 445 on the driving motor 43, so that the position of the driving motor 43 can be adjusted; after the adjustment is completed, the first hydraulic cylinder 441 is started again, and the extension action of the telescopic rod 65 prompts the first gear rod 443 and the second gear rod 445 to reset, thereby fixing the driving motor 43, ensuring that the machining accuracy of the workpiece will not be affected by the shaking of the motor during the machining process.

[0042] In a further embodiment, referring to Figure 2-Figure 3 The angle adjustment mechanism 5 includes a fourth motor 52 and an eccentric block 53. An arc groove 11 is provided on the upper end surface of the workbench 1. An arc block 54 is slidably connected inside the arc groove 11. The upper end of the arc block 54 is fixedly connected to the lower end of the first slide seat 31, and the lower end of the arc block 54 is fixedly connected to the eccentric block 53. The lower end of the workbench 1 is fixedly connected to the fourth motor 52 through the mounting frame 51, and the output shaft end of the fourth motor 52 is fixedly connected to the lower end of the eccentric block 53.

[0043] In this embodiment, when the fourth motor 52 starts and drives the eccentric block 53 to move, since the center point of the arc groove 11 coincides with the axis of the output shaft of the fourth motor 52, the eccentric block 53 can drive the arc block 54 to slide inside it, and this sliding further drives the first slide seat 31 to move, thereby providing the required power for adjusting the position of the tool holder 4.

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

Claims

1. A turning-milling composite CNC machine tool, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is provided with a spindle system (2) and a position adjustment mechanism (3), a tool holder (4) is provided above the position adjustment mechanism (3), and the lower end of the workbench (1) is provided with an angle adjustment mechanism (5), and the angle adjustment mechanism (5) is used to adjust the position of the tool holder (4); The position adjustment mechanism (3) comprises a first slide (31) and a second slide (32); the first slide (31) is arranged at the upper end of the workbench (1); a first limiting groove (311) is provided inside the first slide (31); a first threaded rod (312) is rotatably connected inside the first limiting groove (311); a first motor (313) is fixedly connected to the front end of the first slide (31); an output shaft end of the first motor (313) is fixedly connected to the front end of the first threaded rod (312); and the second slide (32) is slidably connected to the upper end of the first slide (31).

2. A turning-milling compound CNC machine tool according to claim 1, characterized in that: A first limiting block (321) is fixedly connected to the lower end of the second slide seat (32); the first limiting block (321) is located inside the first limiting groove (311) and is slidably connected thereto; the first threaded rod (312) passes through the first limiting block (321) and is threadedly connected thereto; a second limiting groove (322) is provided on the upper end surface of the second slide seat (32); three groups of the second limiting grooves (322) are provided, and adjacent second limiting grooves (322) are connected via connecting grooves (325).

3. The turning-milling compound CNC machine tool according to claim 1, characterized in that: A second threaded rod (323) is rotatably connected inside a second limiting groove (322) located in the middle of the second slide (32); a second motor (324) is fixedly connected to the right end of the second slide (32); an output shaft end of the second motor (324) is fixedly connected to the right end of the second threaded rod (323); a tool holder (4) is arranged at the upper end of the second slide (32); and the second slide (32) and the tool holder (4) are connected via a connecting lifting mechanism (6).

4. A turning-milling compound CNC machine tool according to claim 3, characterized in that: The tool holder (4) comprises a mounting seat (41) and a limiting assembly (44); the mounting seat (41) is arranged at the upper end of the second slide seat (32); a mounting block (42) is fixedly connected to the left end of the rear side of the mounting seat (41); and a milling cutter (421) is fixedly connected to the left end of the mounting block (42).

5. The turning-milling compound CNC machine tool according to claim 4, characterized in that: The upper end surface of the mounting seat (41) is provided with a first mounting groove (412), and the first mounting groove (412) is provided with two groups. A rotating shaft (46) is rotatably connected inside the mounting seat (41), and the rotating shaft (46) passes through the first mounting groove (412). A driving motor (43) is fixedly connected to the side wall of the rotating shaft (46), and the driving motor (43) is located inside the first mounting groove (412). The output shaft of the driving motor (43) located at the rear side of the mounting seat (41) is fixedly connected to a face milling cutter (431), and the output shaft of the driving motor (43) located at the front side of the mounting seat (41) is fixedly connected to an end milling cutter (432). The front end of the mounting seat (41) is fixedly connected to a third motor (45), and the output shaft end of the third motor (45) is fixedly connected to the front end of the rotating shaft (46).

6. The turning-milling compound CNC machine tool according to claim 4, characterized in that: The limiting assembly (44) comprises a first gear rod (443) and a second gear rod (445); a second mounting groove (413) is provided on the upper end surface of the mounting seat (41); a first connecting block (442) is slidably connected inside the second mounting groove (413); a first gear rod (443) is fixedly connected to the left front end of the first connecting block (442); a side wall of the first gear rod (443) abuts against a side wall of a driving motor (43) located at the rear side of the mounting seat (41); a connecting rod (444) is fixedly connected to the right front end of the first connecting block (442); a second gear rod (445) is fixedly connected to the front end of the connecting rod (444); a side wall of the second gear rod (445) abuts against a side wall of the driving motor (43) located at the front side of the mounting seat (41); a first hydraulic cylinder (441) is fixedly connected to the upper end of the sliding seat; an output shaft end of the first hydraulic cylinder (441) is fixedly connected to the rear end of the first connecting block (442).

7. The turning-milling compound CNC machine tool according to claim 3, characterized in that: The connecting lifting mechanism (6) comprises a sleeve (63) and a second hydraulic cylinder (64); a second limiting block (61) is slidably connected inside a second limiting groove (322) located in the middle of the second slide seat (32); the second threaded rod (323) passes through the second limiting block (61) and is threadedly connected thereto; the second limiting block (61) is fixedly connected to second connecting blocks (62) at both front and rear ends; the second connecting block (62) is located inside a connecting groove (325) and is slidably connected thereto; and the sleeve (63) is fixedly connected to one end of the second connecting block (62) away from the second limiting block (61).

8. The turning-milling compound CNC machine tool according to claim 7, characterized in that: The sleeve (63) is located inside the second limiting groove (322) in front and behind the second sliding seat (32) and is slidably connected thereto. A telescopic rod (65) is slidably connected inside the sleeve (63), and the upper end of the telescopic rod (65) is fixedly connected to the lower end of the mounting seat (41).

9. The turning-milling compound CNC machine tool according to claim 4, characterized in that: A reserved groove (411) is provided on the lower end surface of the mounting seat (41), a second hydraulic cylinder (64) is fixedly connected inside the reserved groove (411), and an output shaft end of the second hydraulic cylinder (64) is fixedly connected to the upper end of the second limit block (61).

10. The turning-milling compound CNC machine tool according to claim 1, characterized in that: The angle adjustment mechanism (5) comprises a fourth motor (52) and an eccentric block (53); an arc groove (11) is provided on the upper end surface of the workbench (1); an arc block (54) is slidably connected inside the arc groove (11); the upper end of the arc block (54) is fixedly connected to the lower end of the first slide seat (31); the lower end of the arc block (54) is fixedly connected to the eccentric block (53); the lower end of the workbench (1) is fixedly connected to the fourth motor (52) via a mounting frame (51); and the output shaft end of the fourth motor (52) is fixedly connected to the lower end of the eccentric block (53).

Images