High-low rail turning and milling composite numerical control machine

Abstract

The invention discloses a high-low rail turning and milling composite numerical control machine, and belongs to the field of turning and milling composite numerical control machines. A high-low rail turning and milling composite numerical control machine comprises a high-low machine tool. The headstock is arranged on the high-low machine tool; the tailstock box is slidably mounted on the high-low machine tool; the center frame is slidably installed on the high-low machine tool. The inclined sliding seat is slidably mounted on the high-low machine tool; the mounting seat is obliquely and slidably mounted on the inclined sliding seat; the fixed plate is fixedly connected to the mounting seat; the lifting frame is fixedly connected to the fixing plate. The high-low rail turning and milling composite numerical control machine has the beneficial effects that the guide rail is horizontally arranged, so that high precision and high precision can be maintained when the machine is impacted and vibrated; various accessory heads are arranged according to machining requirements, multi-procedure machining such as milling, boring, drilling, reaming and tapping can be carried out on five faces of a workpiece through one-time clamping, one machine has multiple purposes, rapid tool changing is achieved, and therefore the machining quality and the production efficiency of the workpiece are improved.

Description

Technical Field

[0001] The present application relates to the field of turning-milling compound CNC machines, and in particular to a high- and low-rail turning-milling compound CNC machine. Background Art

[0002] Machining equipment usually refers to some devices used to process metal products. During the processing, the workpiece is clamped and fixed by the headstock, and the spindle on the headstock drives the workpiece to rotate at high speed, and then the high-speed rotating workpiece contacts the cutter head to achieve cutting. In some types of products, such as bathroom faucets, motorcycle parts, and auto parts, the processing technology of small parts is complicated and cumbersome, with many processes and more sophisticated parts products, which puts higher requirements on the accuracy and durability of the processing equipment. In the prior art, the X-direction guide rails of the machining equipment are generally tilted, and the guide rails and sliders are subject to oblique forces, which are easy to wear. After long-term use, the wear of the guide rails and sliders increases, which greatly reduces the service life of the guide rails and sliders.

[0003] A high and low rail turning and milling compound CNC machine is now provided. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a high-low rail turning and milling compound CNC machine, including: a high-low machine tool;

[0006] A high-low rail turning and milling composite CNC machine also includes:

[0007] The headstock is installed on the high and low machine tools and is used to clamp the workpiece;

[0008] The tail box is slidably mounted on the high and low machine tools to clamp the workpiece;

[0009] Center frame, slidably mounted on high and low machine tools;

[0010] Tilt slide, sliding installation on high and low machine tools;

[0011] A mounting seat, obliquely and slidably mounted on the inclined sliding seat;

[0012] A fixing plate, fixedly connected to the mounting seat;

[0013] A lifting frame, fixedly connected to the fixed plate;

[0014] The turret seat is slidably connected to the lifting frame;

[0015] The cutter head disc is rotatably mounted on the turret seat;

[0016] A plurality of cutting bits are provided and are respectively mounted on the bit disc;

[0017] The tool changing motor is fixedly connected to the turret seat;

[0018] A lifting motor is fixedly connected to the lifting frame;

[0019] A lifting screw rod is fixedly connected to the output shaft of the lifting motor;

[0020] The lifting screw penetrates the turret seat and is threadedly connected to the turret seat, and the output shaft of the tool changing motor is fixedly connected to the cutter head disc;

[0021] A horizontal sliding member is provided on the high and low machine tools and is used to drive the inclined slide to slide horizontally;

[0022] The tilting sliding member is arranged on the tilting sliding seat and is used to drive the mounting seat to tilt and slide;

[0023] Guide rail parts are installed on high and low machine tools.

[0024] Further, the bedside box comprises:

[0025] The spindle box is fixedly connected to the high and low machine tools;

[0026] A first rotating motor is fixedly connected to the spindle box;

[0027] The first three-grip chuck is installed on the spindle box;

[0028] Wherein, the output shaft of the first rotating motor is fixedly connected to the first three-grip chuck.

[0029] Furthermore, the bed tail box includes:

[0030] A first horizontal motor is fixedly connected to the high and low machine tool;

[0031] A first screw rod is fixedly connected to the output shaft of the first horizontal motor;

[0032] A first horizontal slider is slidably connected to the high and low machine tool;

[0033] A tailstock, fixedly connected to the first horizontal slider;

[0034] A second rotating motor is fixedly connected to the tail frame;

[0035] The second three-jaw chuck is mounted on the tailstock;

[0036] The first screw rod passes through the first horizontal slider and is threadedly connected to the first horizontal slider, and the output shaft of the second rotating motor is fixedly connected to the second three-jaw chuck.

[0037] Further, the horizontal sliding member comprises:

[0038] A second horizontal motor is fixedly connected to the high and low machine tool;

[0039] A second screw rod is fixedly connected to the output shaft of the second horizontal motor;

[0040] A second horizontal slider is slidably connected to the high and low machine tool;

[0041] The inclined slide is fixedly connected to the second horizontal slide block; the second screw rod passes through the second horizontal slide block and is threadedly connected to the second horizontal slide block.

[0042] Further, the tilting sliding member comprises:

[0043] A tilt motor, fixedly connected to the tilt slide;

[0044] A tilting screw rod is fixedly connected to the output shaft of the tilting motor;

[0045] A tilting slide block, slidably connected to the tilting slide seat;

[0046] The tilting screw rod passes through the tilting slider and is threadedly connected with the tilting slider.

[0047] Furthermore, the guide rail member comprises:

[0048] The first guide rail is fixedly connected to the high and low machine tool;

[0049] The second guide rail is fixedly connected to the high and low machine tool;

[0050] The third guide rail is fixedly connected to the high and low machine tool;

[0051] The fourth guide rail is fixedly connected to the high and low machine tool;

[0052] Among them, there are height differences among the first guide rail, the second guide rail, the third guide rail and the fourth guide rail.

[0053] Further, the first guide rail and the second guide rail respectively penetrate the center frame, and the center frame is in sliding contact with the first guide rail and the second guide rail respectively.

[0054] Further, the first guide rail and the second guide rail respectively penetrate the first horizontal slider, and the first horizontal slider is in sliding contact with the first guide rail and the second guide rail respectively.

[0055] Further, the third guide rail and the fourth guide rail respectively penetrate the second horizontal slider and the second horizontal slider is in sliding contact with the third guide rail and the fourth guide rail respectively.

[0056] Furthermore, a high-low rail turning and milling composite CNC machine also includes:

[0057] Protective cover, installed on high and low machine tools;

[0058] The chip discharge structure is installed on the high and low machine tools to discharge the chips in the protective cover;

[0059] Among them, a debris collection groove with an upward opening is provided on the high and low machine tool, and the debris collection groove is located below the central axis of the first three-jaw chuck and the second three-jaw chuck. A discharge hole is provided on the end wall of the high and low machine tool, and the discharge hole is connected with the debris collection groove. A part of the debris discharge structure is installed in the discharge hole.

[0060] The beneficial effects of the present application are: providing a high-low rail turning and milling compound CNC machine, which can maintain high precision and high accuracy when subjected to impact and vibration by setting the guide rail horizontally; by configuring a variety of accessory heads according to processing needs, one clamping can achieve milling, boring, drilling, reaming, tapping and other multi-process processing on the five surfaces of the workpiece, and one machine can be used for multiple purposes to achieve rapid tool change, thereby improving the processing quality and production efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0062] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0063] In the attached picture:

[0064] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0065] Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing the high and low machine tool structure;

[0066] Figure 3 yes Figure 2 Schematic diagram of the overall right view plane;

[0067] Figure 4 It is a schematic cross-sectional view of a part of the embodiment, mainly showing the structure of the inclined sliding member;

[0068] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the turret seat structure.

[0069] Reference numerals:

[0070] 11. High and low machine tool; 12. Protective cover; 13. Spindle box; 14. First rotary motor; 15. First three-claw chuck; 16. Center frame; 17. First horizontal motor; 18. First screw rod; 19. First horizontal slide block; 20. Tail frame; 21. Second rotary motor; 22. Second three-claw chuck; 23. First guide rail; 24. Second guide rail; 25. Third guide rail; 26. Fourth guide rail; 27. Second horizontal motor; 28. Second screw rod; 29, second horizontal slider; 30, tilting slide seat; 31, tilting motor; 32, tilting screw rod; 33, tilting slider; 34, mounting seat; 35, fixing plate; 36, lifting frame; 37, lifting motor; 38, lifting screw rod; 39, turret seat; 40, tool changing motor; 41, tool head disc; 42, cutting tool head; 43, debris collecting trough; 44, discharge hole; 45, debris discharge structure; 46, hopper cart. DETAILED DESCRIPTION

[0071] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0072] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0073] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0074] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0075] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0076] Reference Figure 1-Figure 5A high-low rail turning and milling compound CNC machine includes: a high-low machine tool 11, a center frame 16, an inclined slide 30, a mounting seat 34, a fixing plate 35, a lifting frame 36, a turret seat 39, a tool head disc 41, a cutting tool head 42, a tool changing motor 40, a lifting motor 37, a lifting screw 38, a protective cover 12, and a debris discharge structure 45.

[0077] The protective cover 12 is installed on the high and low machine tool 11, and the debris discharge structure 45 is installed on the high and low machine tool 11 to discharge the debris in the protective cover 12. The high and low machine tool 11 is provided with a debris collection groove 43 with an upward opening, and the debris collection groove 43 is located below the central axis of the first three-claw chuck 15 and the second three-claw chuck 22. The end wall of the high and low machine tool 11 is provided with a discharge hole 44, which is connected to the debris collection groove 43, and a part of the debris discharge structure 45 is installed in the discharge hole 44. A screw conveyor is provided in the debris discharge structure 45, and the feed port of the debris discharge structure 45 is connected to the discharge hole 44, and one end of the spiral blade of the screw conveyor extends into the discharge hole 44, and a hopper cart 46 is placed below the discharge port of the debris discharge structure 45.

[0078] The center frame 16 is slidably mounted on the high and low machine tool 11, the tilting slide 30 is slidably mounted on the high and low machine tool 11, the mounting seat 34 is tilted and slidably mounted on the tilting slide 30, the fixing plate 35 is fixedly connected to the mounting seat 34, the lifting frame 36 is fixedly connected to the fixing plate 35, the turret seat 39 is slidably connected to the lifting frame 36, the cutter head disc 41 is rotatably mounted on the turret seat 39, a plurality of cutting heads 42 are provided and are respectively mounted on the cutter head disc 41, and each cutting head 42 has a different shape. The tool changing motor 40 is fixedly connected to the turret seat 39, the lifting motor 37 is fixedly connected to the lifting frame 36, the lifting screw 38 is fixedly connected to the output shaft of the lifting motor 37, the lifting screw 38 passes through the turret seat 39 and is threadedly connected to the turret seat 39, and the output shaft of the tool changing motor 40 is fixedly connected to the cutter head disc 41.

[0079] In order to clamp the workpiece, a headstock is provided, which includes a spindle box 13 , a first rotating motor 14 , and a first three-jaw chuck 15 .

[0080] The spindle box 13 is fixedly connected to the high and low machine tool 11 , the first rotary motor 14 is fixedly connected to the spindle box 13 , the first three-grip chuck 15 is installed on the spindle box 13 , and the output shaft of the first rotary motor 14 is fixedly connected to the first three-grip chuck 15 .

[0081] In order to clamp the workpiece, a tail box is also provided, which includes: a first horizontal motor 17 , a first screw rod 18 , a first horizontal slider 19 , a tail frame 20 , a second rotating motor 21 , and a second three-jaw chuck 22 .

[0082] The first horizontal motor 17 is fixedly connected to the elevating machine tool 11, the first screw rod 18 is fixedly connected to the output shaft of the first horizontal motor 17, the first horizontal slider 19 is slidably connected to the elevating machine tool 11, the tailstock 20 is fixedly connected to the first horizontal slider 19, the second rotary motor 21 is fixedly connected to the tailstock 20, the second three-jaw chuck 22 is installed on the tailstock 20, the first screw rod 18 passes through the first horizontal slider 19 and is threadedly connected to the first horizontal slider 19, and the output shaft of the second rotary motor 21 is fixedly connected to the second three-jaw chuck 22.

[0083] In order to drive the tilting slide 30 to slide horizontally, the horizontal sliding member includes: a second horizontal motor 27 , a second screw rod 28 , and a second horizontal sliding block 29 .

[0084] The second horizontal motor 27 is fixedly connected to the elevating machine tool 11, the second screw rod 28 is fixedly connected to the output shaft of the second horizontal motor 27, the second horizontal slider 29 is slidably connected to the elevating machine tool 11, and the tilting slide 30 is fixedly connected to the second horizontal slider 29; the second screw rod 28 passes through the second horizontal slider 29 and is threadedly connected to the second horizontal slider 29.

[0085] In order to drive the mounting seat 34 to tilt and slide, a tilt sliding member is further provided. The tilt sliding member includes: a tilt motor 31 , a tilt screw rod 32 , and a tilt sliding block 33 .

[0086] The tilt motor 31 is fixedly connected to the tilt slide 30 , the tilt screw 32 is fixedly connected to the output shaft of the tilt motor 31 , the tilt slider 33 is slidably connected to the tilt slide 30 , and the tilt screw 32 penetrates the tilt slider 33 and is threadedly connected to the tilt slider 33 .

[0087] In order to guide the central frame 16 , the first horizontal slider 19 and the second horizontal slider 29 , guide rail components are further provided. The guide rail components include: a first guide rail 23 , a second guide rail 24 , a third guide rail 25 and a fourth guide rail 26 .

[0088] The first guide rail 23 is fixedly connected to the elevating machine tool 11, the second guide rail 24 is fixedly connected to the elevating machine tool 11, the third guide rail 25 is fixedly connected to the elevating machine tool 11, and the fourth guide rail 26 is fixedly connected to the elevating machine tool 11. There is a height difference between the first guide rail 23, the second guide rail 24, the third guide rail 25 and the fourth guide rail 26. The first guide rail 23 and the second guide rail 24 respectively penetrate the center frame 16, and the center frame 16 is in sliding contact with the first guide rail 23 and the second guide rail 24 respectively. The first guide rail 23 and the second guide rail 24 respectively penetrate the first horizontal slider 19, and the first horizontal slider 19 is in sliding contact with the first guide rail 23 and the second guide rail 24 respectively. The third guide rail 25 and the fourth guide rail 26 respectively penetrate the second horizontal slider 29, and the second horizontal slider 29 is in sliding contact with the third guide rail 25 and the fourth guide rail 26 respectively.

[0089] The central axis of the first three-jaw chuck 15 and the central axis of the second three-jaw chuck 22 are on the same horizontal straight line; the inclined slide 30 and the inclined screw rod 32 are respectively inclined, and the axis of the inclined screw rod 32 is parallel to the inclined extension straight line of the inclined slide 30.

[0090] In order to ensure stability in heavy cutting, the output shaft of the motor of this product reasonably combines P4 grade roller bearings and angular contact bearings. In order to prevent the pre-load loosening of the output shaft bearing of the motor caused by intermittent and heavy cutting, the output shaft adopts a high-speed, high-precision built-in electric spindle structure, cancels the intermediate transmission mechanism, reduces vibration and thermal displacement under high-speed operation, ensures good processing accuracy and surface roughness, and achieves good output shaft rigidity and cooling effect. By adopting the standard C-axis 0.001° control function on the output shaft, the processing of products of various shapes is guaranteed.

[0091] Working or installation process:

[0092] The first horizontal motor 17 is started according to the length of the workpiece, and the output shaft of the first horizontal motor 17 drives the first screw rod 18 to rotate. The first screw rod 18 is threadedly connected with the first horizontal slider 19, and the first horizontal slider 19 moves horizontally along the extension direction of the first guide rail 23 and the second guide rail 24. The first horizontal slider 19 drives the tailstock 20 to move horizontally, and the tailstock 20 drives the second three-jaw chuck 22 and the second rotary motor 21 to approach the workpiece. The first three-jaw chuck 15 and the second three-jaw chuck 22 are started and clamp the two ends of the workpiece respectively. The first rotary motor 14 and the second rotary motor 21 are started synchronously, and the speed of the output shaft of the first rotary motor 14 is the same as the speed of the output shaft of the second rotary motor 21, and the rotation direction of the output shaft of the first rotary motor 14 is the same as the rotation direction of the output shaft of the second rotary motor 21; at this time, the two ends of the workpiece are clamped by the first three-jaw chuck 15 and the second three-jaw chuck 22 respectively, and the middle end of the workpiece passes through the center frame 16;

[0093] The second horizontal motor 27 is started, and the output shaft of the second horizontal motor 27 drives the second screw rod 28 to rotate. The second screw rod 28 is threadedly connected to the second horizontal slider 29. The second horizontal slider 29 moves horizontally along the extension direction of the third guide rail 25 and the fourth guide rail 26. The second horizontal slider 29 drives the tilting slide 30 to move horizontally synchronously. The tilting slide 30 drives the cutting head 42 to move horizontally and approach the position where the workpiece needs to be cut.

[0094] Afterwards, the tilting motor 31 is started, and the output shaft of the tilting motor 31 drives the tilting screw 32 to rotate. The tilting screw 32 is threadedly connected to the tilting slider 33 and drives the tilting slider 33 to tilt and move along the extension direction of the tilting screw 32. The tilting slider 33 drives the mounting seat 34 to move, and the mounting seat 34 drives the fixing plate 35 to tilt and move, and the fixing plate 35 drives the lifting frame 36 to tilt and move, and the lifting frame 36 drives the cutting head 42 to tilt and move close to the workpiece to cut the workpiece.

[0095] When tool changing is required, the lifting motor 37 is started, and the output shaft of the lifting motor 37 drives the lifting screw 38 to rotate. The lifting screw 38 is threadedly connected to the turret seat 39 to drive the turret seat 39 to move vertically upward. The turret seat 39 drives the cutter head disc 41 and the tool changing motor 40 to move upward. The cutter head disc 41 drives multiple cutting heads 42 to move upward, and the cutting heads 42 are separated from the contact with the workpiece. Then the tool changing motor 40 is started, and the output shaft of the tool changing motor 40 drives the cutter head disc 41 to rotate. The cutter head disc 41 drives each different cutting head 42 to rotate, and makes the cutting head 42 for subsequent cutting rotate to the corresponding position. Then the lifting motor 37 is started in the reverse direction, and the turret seat 39 moves downward. The turret seat 39 drives the cutting head 42 to move downward until it contacts the workpiece, and further cutting work is performed, thereby realizing rapid tool changing and cutting work.

[0096] The debris generated by cutting falls downward into the debris collecting trough 43. The debris entering the debris collecting trough 43 slides into the discharge hole 44 and the screw conveyor in the debris discharge structure 45 is started to convey the debris entering the discharge hole 44 obliquely upward to the discharge port of the debris discharge structure 45. The debris falls downward through the discharge port of the debris discharge structure 45 into the hopper cart 46 for collection.

[0097] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A high and low rail turning and milling composite CNC machine, comprising: High and low machine tools (11); Features: The high-low rail turning and milling composite CNC machine also includes: A headstock, arranged on the high and low machine tool (11), and used for clamping a workpiece; A bed tail box, slidably mounted on the high and low machine tool (11), used for clamping workpieces; A center frame (16) is slidably mounted on the high and low machine tool (11); An inclined slide (30) is slidably mounted on the high and low machine tool (11); A mounting seat (34) is obliquely and slidably mounted on the inclined sliding seat (30); A fixing plate (35) fixedly connected to the mounting seat (34); A lifting frame (36) fixedly connected to the fixing plate (35); A turret seat (39) is slidably connected to the lifting frame (36); A cutter head disc (41) is rotatably mounted on the turret seat (39); A plurality of cutting bits (42) are provided and are respectively mounted on the bit disc (41); A tool changing motor (40) is fixedly connected to the tool turret seat (39); A lifting motor (37) fixedly connected to the lifting frame (36); A lifting screw rod (38) is fixedly connected to the output shaft of the lifting motor (37); The lifting screw (38) passes through the turret seat (39) and is threadedly connected to the turret seat (39), and the output shaft of the tool changing motor (40) is fixedly connected to the tool head disc (41); A horizontal sliding member, provided on the high and low machine tool (11), used for driving the inclined slide seat (30) to slide horizontally; An inclined sliding member, disposed on the inclined sliding seat (30), and used to drive the mounting seat (34) to slide in an inclined manner; The guide rail part is arranged on the high and low machine tool (11).

2. The high and low rail turning and milling composite CNC machine according to claim 1, characterized in that: The bedside box comprises: A spindle box (13) is fixedly connected to the high and low machine tool (11); A first rotating motor (14) is fixedly connected to the spindle box (13); A first three-grip chuck (15) is mounted on the spindle box (13); Wherein, the output shaft of the first rotating motor (14) is fixedly connected to the first three-grip chuck (15).

3. The high and low rail turning and milling composite CNC machine according to claim 2, characterized in that: The bed tail box comprises: A first horizontal motor (17) fixedly connected to the elevated machine tool (11); A first screw rod (18) fixedly connected to the output shaft of the first horizontal motor (17); A first horizontal sliding block (19) is slidably connected to the high and low machine tool (11); A tail frame (20) fixedly connected to the first horizontal slide block (19); A second rotating motor (21) is fixedly connected to the tail frame (20); A second three-jaw chuck (22) is mounted on the tailstock (20); The first screw rod (18) passes through the first horizontal slider (19) and is threadedly connected to the first horizontal slider (19), and the output shaft of the second rotary motor (21) is fixedly connected to the second three-jaw chuck (22).

4. The high and low rail turning and milling composite CNC machine according to claim 3, characterized in that: The horizontal sliding member comprises: A second horizontal motor (27) is fixedly connected to the high and low machine tool (11); A second screw rod (28) fixedly connected to the output shaft of the second horizontal motor (27); A second horizontal slider (29) is slidably connected to the high and low machine tool (11); The inclined slide seat (30) is fixedly connected to the second horizontal slide block (29); the second screw rod (28) passes through the second horizontal slide block (29) and is threadedly connected to the second horizontal slide block (29).

5. The high and low rail turning and milling composite CNC machine according to claim 4, characterized in that: The tilting sliding member comprises: A tilting motor (31) fixedly connected to the tilting slide (30); A tilting screw rod (32) fixedly connected to the output shaft of the tilting motor (31); An inclined sliding block (33) slidably connected to the inclined sliding seat (30); The tilting screw rod (32) passes through the tilting slider (33) and is threadedly connected to the tilting slider (33).

6. The high and low rail turning and milling composite CNC machine according to claim 5, characterized in that: The guide rail member comprises: A first guide rail (23) fixedly connected to the high and low machine tool (11); A second guide rail (24) fixedly connected to the elevated machine tool (11); A third guide rail (25) fixedly connected to the high and low machine tool (11); A fourth guide rail (26) fixedly connected to the high and low machine tool (11); There is a height difference between the first guide rail (23), the second guide rail (24), the third guide rail (25) and the fourth guide rail (26).

7. The high-low rail turning and milling composite CNC machine according to claim 6, characterized in that: The first guide rail (23) and the second guide rail (24) respectively penetrate the central frame (16), and the central frame (16) is in sliding contact with the first guide rail (23) and the second guide rail (24) respectively.

8. The high and low rail turning and milling composite CNC machine according to claim 6, characterized in that: The first guide rail (23) and the second guide rail (24) respectively penetrate the first horizontal slider (19), and the first horizontal slider (19) is in sliding contact with the first guide rail (23) and the second guide rail (24) respectively.

9. The high and low rail turning and milling composite CNC machine according to claim 6, characterized in that: The third guide rail (25) and the fourth guide rail (26) respectively penetrate the second horizontal slider (29), and the second horizontal slider (29) is in sliding contact with the third guide rail (25) and the fourth guide rail (26) respectively.

10. The high and low rail turning and milling compound CNC machine according to claim 6, characterized in that: The high-low rail turning and milling composite CNC machine also includes: A protective cover (12) is installed on the high and low machine tool (11); A debris discharge structure (45) is installed on the high and low machine tool (11) and is used to discharge the debris in the protective cover (12); The high and low machine tool (11) is provided with a debris collection groove (43) with an upward opening, and the debris collection groove (43) is located below the central axis of the first three-jaw chuck (15) and the second three-jaw chuck (22), and an outlet hole (44) is provided on the end wall of the high and low machine tool (11), and the outlet hole (44) is connected to the debris collection groove (43), and a part of the debris discharge structure (45) is installed in the outlet hole (44).

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