Numerically controlled turning and milling combined processing equipment

Abstract

The application relates to the technical field of numerical control turning and milling equipment, and discloses a numerical control turning and milling composite machining equipment, which comprises a numerical control turning and milling machine base, the upper side of the numerical control turning and milling machine base is provided with a numerical control turning and milling sliding rail, the upper side of the numerical control turning and milling sliding rail is provided with a numerical control turning and milling switching tool head frame, a plurality of groups of rotary tool heads are arranged on the numerical control turning and milling switching tool head frame, a cooling assembly is arranged at one end of the numerical control turning and milling switching tool head frame shell, a hydraulic cylinder is fixedly arranged at the upper side of the numerical control turning and milling sliding rail, the cooling assembly comprises a fixed sleeve ring sleeved outside one group of rotary tool heads, and a cooling liquid storage shell is rotatably arranged outside the fixed sleeve ring. The numerical control turning and milling composite machining equipment can realize the up-and-down nodding movement of the pinch nozzle head, so that the plurality of groups of pinch nozzle heads can face some complex structure workpieces and can realize multi-angle injection to deeply process the complex machining surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control turning and milling equipment, and particularly relates to a numerical control turning and milling composite machining equipment. BACKGROUND

[0002] Numerical control turning and milling is a composite machining technology combining turning and milling. Through the numerical control system, the machine tool realizes the cooperative operation of workpiece rotation (turning) and tool multi-axis linkage (milling). The core is to use programming instructions to drive the tool path to accurately complete the machining of complex geometric shapes, especially for the manufacturing of asymmetric, eccentric or curved surface parts. Through the numerical control turning and milling composite machining equipment, a high-end numerical control machine tool integrating turning, milling, drilling and tapping is realized. Through the numerical control system, the composite motion of the tool and the workpiece is controlled to realize the whole process machining of complex parts in single clamping, significantly improving the machining efficiency and precision. However, the existing numerical control turning and milling machining equipment needs to use cooling liquid to cool the workpiece and tool head during machining. When spraying the cooling liquid, a universal plastic water spray pipe is usually used, but a flexible structure with manually adjustable angle is needed. The fixed-point spraying method during machining cannot dynamically adjust the spraying angle, resulting in single cooling liquid coverage area, which is difficult to adapt to the heat dissipation demand of complex machining surface, and local overheating or cooling blind area is easy to occur. SUMMARY

[0003] The main purpose of the present application is to provide a numerical control turning and milling composite machining equipment, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] A numerical control turning and milling composite machining equipment, comprising a numerical control turning and milling bed base, a numerical control turning and milling slide rail is installed on the upper side of the numerical control turning and milling bed base, a numerical control turning and milling switching tool holder is installed on the upper side of the numerical control turning and milling slide rail, a plurality of groups of rotating tool heads are installed on the numerical control turning and milling switching tool holder, a cooling assembly is arranged at one end of the numerical control turning and milling switching tool holder shell, a hydraulic cylinder is fixedly arranged at the upper side of the numerical control turning and milling slide rail, the cooling assembly comprises a fixed sleeve ring sleeved on the outer side of a group of rotating tool heads, a cooling liquid storage shell is rotatably arranged on the outer side of the fixed sleeve ring, a side cover plate ring is fixedly arranged at one end of the cooling liquid storage shell, a rubber sleeve is fixedly arranged at the end of the fixed sleeve ring away from the side cover plate ring, a plurality of groups of round shell joints are rotatably arranged inside one side of the cooling liquid storage shell, a pinched nozzle spray head is fixedly arranged at one side of the round shell joint, two groups of fixed circular shafts are fixedly arranged on both sides of the pinched nozzle spray head, an active frame is sleeved on the outer side of the four groups of fixed circular shafts, and a first roller is rotatably arranged at the lower side of the active frame.

[0006] Preferably, the outside of the cooling liquid storage shell is movably sleeved with an adjusting ring near the lower side of the first roller, a plurality of top blocks are fixedly arranged outside the adjusting ring, a plurality of pull ring sleeves are fixedly arranged outside the plurality of sets of pinch nozzles, a plurality of elastic memory ropes are arranged inside the plurality of sets of pull ring sleeves, a side stop ring is fixedly arranged outside the fixed sleeve ring near one side edge, and two sets of adjusting bolts are arranged between the side stop ring and the adjusting ring.

[0007] Preferably, a plurality of square openings are arranged inside the fixed sleeve ring, a u-shaped fixed shell is fixedly arranged at the bottom of the square opening, a triangular slide block is slidably arranged inside the u-shaped fixed shell, two sets of return springs are fixedly arranged between the triangular slide block and the inner wall of the u-shaped fixed shell, a limiting circular ring is fixedly arranged at the lower end of the triangular slide block, a second roller is rotatably arranged at the lower side of the limiting circular ring, a first gear is fixedly arranged on the inner wall of the groove on one side of the second roller, shaft blocks are uniformly rotatably arranged at positions corresponding to the plurality of sets of square openings on one side of the fixed sleeve ring, second gears are fixedly arranged at both ends of the shaft blocks, and a fixed plate is fixedly arranged at one end of the fixed sleeve ring.

[0008] Preferably, the numerical control turning and milling machine base is arranged as a four-jaw chuck structure away from the numerical control turning and milling tool switching holder, the numerical control turning and milling slide rail drives the numerical control turning and milling tool switching holder to move in different directions on the numerical control turning and milling machine base, the numerical control turning and milling tool switching holder is installed on the numerical control turning and milling slide rail to achieve the purpose of rotating and switching tools, and the hydraulic cylinder telescopic rod passes through one side of the numerical control turning and milling tool switching holder.

[0009] Preferably, the inner wall of the side cover plate ring is arranged as a tooth ring, a group of rotating tool heads are sleeved outside the rubber sleeve, a circular shell joint is rotatably arranged inside the cooling liquid storage shell and communicates with the inside, and the movable frame and the four sets of fixed circular shafts are slidably arranged.

[0010] Preferably, the plurality of sets of top blocks are arranged in a ring shape, the elastic memory ropes are in a tensioned state, the elastic memory ropes are made of Ti-Al-Cr wide-temperature super-elastic alloy and nickel-titanium-based high-temperature memory alloy materials and have shape recovery ability and fatigue resistance, the adjusting bolts and the side stop ring are rotatably arranged, the adjusting bolts and the adjusting ring are threadedly connected, the square openings meet the movement of the second roller, the return springs are in a compressed state, and the limiting circular ring is sleeved at the middle position of the second roller.

[0011] Preferably, the second roller is arranged in close contact with the outside of the rotating tool head, and the first gear corresponds to the center position of the second roller.

[0012] Preferably, the first gear is engaged with a group of second gears arranged inside the square opening, another group of the second gears is engaged with the tooth ring of the side cover plate ring, and the fixed plate is fixedly connected with the hydraulic cylinder telescopic rod.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. By the existing numerical control turning and milling sliding rail, the numerical control turning and milling switching tool holder is driven to move in different directions to perform turning and milling work on the workpiece clamped by the four-jaw chuck on one side of the numerical control turning and milling machine bed, and when the numerical control turning and milling switching tool holder drives the rotating tool head to rotate, it drives the several sets of second rollers in close contact to rotate, and the compressed reset spring elastically pushes the triangular sliding block, the limiting ring and the second roller to move towards the center of the circle, so that the several sets of limiting rings can be closely attached to the outside of the rotating tool head, and the second rollers can be more efficiently driven to rotate, and the first gear drives the second gear and the shaft block to rotate, and the second gear outside the fixed sleeve ring realizes the rotating spraying work of the opposite cover plate ring and the cooling liquid storage shell, and the rotating spraying can dynamically adjust the cooling liquid spraying angle, so that the cooling liquid uniformly covers the cutting tool, the workpiece and the cutting area, avoiding deformation or tool wear caused by local overheating, and improving the machining stability.

[0015] 2. In addition, the cooling liquid storage shell is connected with the external cooling liquid pipeline to add cooling liquid for external spraying, and at the same time that the rotating cooling liquid storage shell drives several sets of round shell joints and pinched nozzle nozzles to rotate and cool, the first roller will rotate and move along the upper side of the adjusting ring, and when it contacts the top protrusion, it will lift the first roller and the movable frame, so that the pinched nozzle nozzles and the round shell joints are elastically pulled by the elastic memory rope, and the pinched nozzle nozzles move up and down in a nodding manner, so that the several sets of pinched nozzle nozzles face some complex structure workpieces, and multi-angle spraying can penetrate into complex machining surfaces, and by twisting the adjusting bolt, the position of the adjusting ring can be adjusted, so that the top protrusion and the first roller are staggered, the elastic memory rope is loosened and pulled to direct the pinched nozzle nozzles to spray in one direction, and the cooling purpose is achieved.

[0016] 3. Finally, when the rotating tool head needs to be switched every time, the cooling assembly is pushed and compressed by the hydraulic cylinder to push it away from the outside of the rotating tool head, and after the different rotating tool heads are switched by the numerical control turning and milling switching tool holder, the hydraulic cylinder is used to pull it back to the outside of the rotating tool head for cooling work. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the numerical control turning and milling composite machining equipment of the present application;

[0018] Figure 2 It is a schematic diagram of the overall structure of the numerical control turning and milling composite machining equipment of the present application;

[0019] Figure 3 It is a schematic diagram of the overall structure of the numerical control turning and milling composite machining equipment of the present application;

[0020] Figure 4The application is a kind of numerical control turning and milling composite machining equipment Figure 3 The enlarged structure diagram of A part in the application is shown in the figure.

[0021] Figure 5 The application is a kind of numerical control turning and milling composite machining equipment

[0022] Figure 6 The application is a kind of numerical control turning and milling composite machining equipment Figure 5 The enlarged structure diagram of B part in the application is shown in the figure.

[0023] Figure 7 The application is a kind of numerical control turning and milling composite machining equipment Figure 1

[0024] Figure 8 The application is a kind of numerical control turning and milling composite machining equipment Figure 2

[0025] Figure 9 The application is a kind of numerical control turning and milling composite machining equipment Figure 3

[0026] Figure 10 The application is a kind of numerical control turning and milling composite machining equipment Figure 9 The enlarged structure diagram of C part in the application is shown in the figure.

[0027] In the figure: 1, numerical control turning and milling machine base; 2, numerical control turning and milling slide rail; 3, numerical control turning and milling switching tool holder; 4, rotating tool head; 5, cooling assembly; 51, fixed collar; 52, cooling liquid storage shell; 53, side cover plate ring; 54, rubber sleeve; 55, round shell joint; 56, pinched nozzle; 57, fixed round shaft; 58, movable frame; 59, first roller; 510, adjusting ring; 511, top block; 512, pull ring sleeve; 513, elastic memory rope; 514, side retaining ring; 515, adjusting bolt; 516, square opening; 517, u-shaped fixed shell; 518, triangular slide block; 519, return spring; 520, limiting ring; 521, second roller; 522, first gear; 523, shaft block; 524, second gear; 525, fixed plate; 6, hydraulic cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application.

[0029] ​​​In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the relative position or positional relationship of the orientation or position of the indicated device or element, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0030] Please refer to Figures 1-10 The present application provides an embodiment: a numerical control turning and milling combined machining equipment, comprising a numerical control turning and milling machine base 1, a numerical control turning and milling slide rail 2 is installed on the upper side of the numerical control turning and milling machine base 1, a numerical control turning and milling switching tool holder 3 is installed on the upper side of the numerical control turning and milling slide rail 2, a plurality of groups of rotating tool heads 4 are installed on the numerical control turning and milling switching tool holder 3, a cooling assembly 5 is arranged at one end of the shell of the numerical control turning and milling switching tool holder 3, a hydraulic cylinder 6 is fixedly arranged at the upper side position of the numerical control turning and milling slide rail 2, the cooling assembly 5 comprises a fixed sleeve ring 51 sleeved outside a group of rotating tool heads 4, a cooling liquid storage shell 52 is rotatably arranged outside the fixed sleeve ring 51, a side cover plate ring 53 is fixedly arranged at one end of the cooling liquid storage shell 52, a rubber sleeve 54 is fixedly arranged at the end of the fixed sleeve ring 51 away from the side cover plate ring 53, a plurality of groups of round shell joints 55 are rotatably arranged inside one side of the cooling liquid storage shell 52, a pinched nozzle spray head 56 is fixedly arranged at one side of the round shell joint 55, two groups of fixed circular shafts 57 are fixedly arranged on both sides of the pinched nozzle spray head 56, an activity frame 58 is sleeved outside the four groups of fixed circular shafts 57, a first roller 59 is rotatably arranged at the lower side of the activity frame 58, an adjusting ring 510 is movably sleeved outside the cooling liquid storage shell 52 close to the lower side of the first roller 59, a plurality of groups of top protruding blocks 511 are fixedly arranged outside the adjusting ring 510, a pull ring sleeve 512 is fixedly arranged outside each of the plurality of groups of pinched nozzle spray heads 56, an elastic memory rope 513 is passed through the inside of the plurality of groups of pull ring sleeves 512, a side stop ring 514 is fixedly arranged outside the fixed sleeve ring 51 close to the side edge position, and two groups of adjusting bolts 515 are arranged between the side stop ring 514 and the adjusting ring 510.

[0031] The numerical control turning and milling machine base 1 is provided with a four-jaw chuck structure away from the numerical control turning and milling tool changing rack 3, the numerical control turning and milling slide rail 2 drives the numerical control turning and milling tool changing rack 3 to move in different directions on the numerical control turning and milling machine base 1, the numerical control turning and milling tool changing rack 3 is installed on the numerical control turning and milling slide rail 2 to realize the purpose of rotating and switching tools, the hydraulic cylinder 6 telescopic rod passes through one side of the outer shell of the numerical control turning and milling tool changing rack 3, the inner wall of the side cover plate ring 53 is provided with a gear ring, the rubber sleeve 54 is attached to the outside of a group of rotating tools 4, the round shell joint 55 is rotatably arranged in the cooling liquid storage shell 52 and communicates with the inside, the movable frame 58 is slidably arranged with four groups of fixed round shafts 57, a plurality of groups of top blocks 511 are arranged in a ring shape, the elastic memory rope 513 is in a tension state, the elastic memory rope 513 is made of Ti-Al-Cr wide temperature super-elastic alloy and nickel-titanium based high temperature memory alloy material and has shape recovery ability and fatigue resistance, the adjusting bolt 515 is rotatably arranged with the side stop ring 514, the adjusting bolt 515 is threadedly connected with the adjusting ring 510, the square opening 516 satisfies the movement of the second roller 521, the reset spring 519 is in a compressed state, and the limiting ring 520 is sleeved on the middle position of the second roller 521.

[0032] The cooling liquid storage shell 52 is connected with an external cooling liquid pipeline to add cooling liquid for external spraying, while the rotating cooling liquid storage shell 52 drives a plurality of groups of round shell joints 55 and pinched nozzle nozzles 56 to rotate and cool, the first roller 59 moves along the upper side of the adjusting ring 510, when contacting the top block 511, the first roller 59 and the movable frame 58 are lifted, the pinched nozzle nozzle 56 and the round shell joint 55 are elastically pulled by the elastic memory rope 513, the pinched nozzle nozzle 56 moves up and down, a plurality of groups of pinched nozzle nozzles 56 face some complex structure workpieces, multi-angle injection can penetrate into complex machining surfaces, and the position of the adjusting ring 510 can be adjusted by twisting the adjusting bolt 515, so that the top block 511 is staggered with the first roller 59, the elastic memory rope 513 is loosened and pulled to make the pinched nozzle nozzle 56 direct to one point for directional injection, and the purpose of cooling is achieved; finally, when the rotating tool 4 needs to be switched every time, the hydraulic cylinder 6 is pushed 8 and 9 to compress 10, the cooling assembly 5 is pushed as a whole to separate from the outside of the rotating tool 4, after the numerical control turning and milling tool changing rack 3 is rotated to switch different rotating tools 4, the hydraulic cylinder 6 is pulled back to the outside of the rotating tool 4, and cooling work is performed.

[0033] The inner side of the fixed collar 51 is provided with a plurality of square openings 516, the bottom of the square opening 516 is fixedly provided with a u-shaped fixed shell 517, the inner side of the u-shaped fixed shell 517 is slidably provided with a triangular slide block 518, two groups of reset springs 519 are fixedly arranged between the triangular slide block 518 and the inner wall of the u-shaped fixed shell 517, the lower end of the triangular slide block 518 is fixedly provided with a limiting circular ring 520, the lower side of the limiting circular ring 520 is rotatably provided with a second roller 521, the inner wall of the groove on one side of the second roller 521 is fixedly provided with a first gear 522, the position corresponding to the plurality of square openings 516 on one side of the fixed collar 51 is uniformly rotatably provided with a shaft block 523, the second gear 524 is fixedly arranged at both ends of the shaft block 523, and the fixed plate 525 is fixedly arranged at one end of the fixed collar 51.

[0034] The second roller 521 is arranged in close contact with the outer side of the rotating tool head 4, the first gear 522 corresponds to the center position of the second roller 521, the first gear 522 is engaged with one group of second gears 524 arranged on the inner side of the square opening 516, the other group of second gears 524 is engaged with the tooth ring of the side cover plate ring 53, and the fixed plate 525 is fixedly connected with the telescopic rod of the hydraulic cylinder 6.

[0035] The existing numerical control turning and milling slide rail 2 drives the numerical control turning and milling switching tool holder 3 to move in different directions, and the workpiece clamped by the four-jaw chuck on one side of the numerical control turning and milling machine base 1 is subjected to turning and milling work. When the numerical control turning and milling switching tool holder 3 drives the rotating tool head 4 to rotate, it drives the plurality of second rollers 521 arranged in close contact to rotate, and the compressed reset spring 519 elastically pushes the triangular slide block 518, the limiting circular ring 520 and the second roller 521 to move towards the center, so that the plurality of limiting circular rings 520 can be closely arranged on the outer side of the rotating tool head 4, and the second roller 521 can be more efficiently driven to rotate. The first gear 522 drives the second gear 524 and the shaft block 523 to rotate, and the second gear 524 on the outer side of the fixed collar 51 rotates the side cover plate ring 53 and the cooling liquid storage shell 52 to realize the rotating spraying work. The rotating spraying can dynamically adjust the cooling liquid spraying angle, so that the cooling liquid uniformly covers the cutting tool, the workpiece and the cutting area, avoids local overheating caused by deformation or tool wear, and improves the machining stability.

[0036] Working principle: when in use, the existing numerical control turning and milling slide rail 2 drives the numerical control turning and milling switching tool holder 3 to move in different directions, and the workpiece clamped by the four-jaw chuck on one side of the numerical control turning and milling machine base 1 is subjected to turning and milling work, while when the numerical control turning and milling switching tool holder 3 drives the rotating tool head 4 to rotate, a plurality of groups of second rollers 521 will rotate, and the compressed reset spring 519 elastically pushes the triangular sliding block 518, the limiting ring 520 and the second roller 521 to move towards the center of the circle, so that a plurality of groups of limiting rings 520 can be closely attached to the outside of the rotating tool head 4, and the second roller 521 can be more efficiently driven to rotate, and the first gear 522 drives the second gear 524 and the shaft block 523 to rotate, and the second gear 524 outside the fixed sleeve ring 51 rotates to spray the opposite cover plate ring 53 and the cooling liquid storage shell 52, and the rotating spray can dynamically adjust the cooling liquid spray angle, so that the cooling liquid uniformly covers the tool, the workpiece and the cutting area, avoids deformation or tool wear caused by local overheating, and improves the machining stability; in addition, the cooling liquid storage shell 52 is connected with the external cooling liquid pipeline to add cooling liquid for external spraying, and the rotating cooling liquid storage shell 52 drives a plurality of groups of circular shell joints 55 and pinched nozzle heads 56 to rotate and cool at the same time, and the first roller 59 will rotate and move along the upper side of the adjusting ring 510, and when contacting the top protrusion 511, the first roller 59 and the movable frame 58 will be lifted, so that the pinched nozzle head 56 and the circular shell joint 55 are elastically pulled by the elastic memory rope 513, the pinched nozzle head 56 moves up and down, a plurality of groups of pinched nozzle heads 56 face some complex structure workpieces, multi-angle injection can penetrate into the complex machining surface, and the position of the adjusting ring 510 can be adjusted by rotating the adjusting bolt 515, so that the top protrusion 511 and the first roller 59 are staggered, the elastic memory rope 513 is loosened and pulled to direct the pinched nozzle head 56 to spray in one direction, and the cooling purpose is achieved; finally, when the rotating tool head 4 needs to be switched every time, the hydraulic cylinder 6 pushes 8 and 9 to compress 10, and the cooling assembly 5 is pushed away from the outside of the rotating tool head 4, and after the numerical control turning and milling switching tool holder 3 is rotated to switch different rotating tool heads 4, the hydraulic cylinder 6 pulls it back to the outside of the rotating tool head 4 for cooling work.

[0037] The electrical components of the numerical control turning and milling machine base 1, the numerical control turning and milling slide rail 2, the numerical control turning and milling switching tool holder 3, the rotating tool head 4, the hydraulic cylinder 6 and the elastic memory rope 513 in the application are existing structures in the field, and the use and connection modes belong to the common knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use, so it will not be explained in detail.

[0038] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A CNC turning and milling combined machining device, comprising a CNC turning and milling machine base (1), characterized in that: A CNC milling and turning slide rail (2) is mounted on the upper side of the CNC milling and turning machine base (1). A CNC milling and turning tool head holder (3) is mounted on the upper side of the CNC milling and turning slide rail (2). Several sets of rotating tool heads (4) are mounted on the CNC milling and turning tool head holder (3). A cooling component (5) is provided at one end of the outer shell of the CNC milling and turning tool head holder (3). A hydraulic cylinder (6) is fixedly provided on the upper side of the CNC milling and turning slide rail (2). The cooling component (5) includes a fixing collar (51) sleeved on the outside of a set of rotating tool heads (4). A coolant storage shell (52) is rotatably provided on the outside of the fixing collar (51). The coolant storage shell (52) is fixedly provided with a side cover ring (53) at one end, and a rubber sleeve (54) is fixedly provided at the end of the fixed collar (51) away from the side cover ring (53). Several sets of round shell joints (55) are rotatably provided inside one side of the coolant storage shell (52). A flat nozzle (56) is fixedly provided on one side of the round shell joint (55). Two sets of fixed round shafts (57) are fixedly provided on both sides of the flat nozzle (56). A movable frame (58) is sleeved on the outside of the four sets of fixed round shafts (57). A first roller (59) is rotatably provided on the lower side of the movable frame (58). An adjusting ring (510) is movably fitted on the outside of the coolant storage shell (52) near the lower side of the first roller (59). Several sets of top protrusions (511) are fixedly provided on the outside of the adjusting ring (510). Pull ring sleeves (512) are fixedly provided on the outside of several sets of collapsible nozzles (56). Elastic memory ropes (513) are threaded through the inner side of several sets of pull ring sleeves (512). A side baffle ring (514) is fixedly provided on the outside of the fixed ring (51) near one side edge. Two sets of adjusting bolts (515) are provided between the side baffle ring (514) and the adjusting ring (510). The inner side of the fixing collar (51) is provided with several sets of square openings (516). A U-shaped fixing shell (517) is fixedly provided at the bottom of the square opening (516). A triangular slider (518) is slidably provided on the inner side of the U-shaped fixing shell (517). Two sets of return springs (519) are fixedly provided between the triangular slider (518) and the inner wall of the U-shaped fixing shell (517). A limiting ring (520) is fixedly provided at the lower end of the triangular slider (518). A second roller (521) is rotatably provided on the lower side of the limiting ring (520). A first gear (522) is fixedly provided on the inner wall of the groove on one side of the second roller (521). A shaft block (523) is evenly rotatably provided on one side of the fixing collar (51) corresponding to the position of several sets of square openings (516). A second gear (524) is fixedly provided at both ends of the shaft block (523). A fixing plate (525) is fixedly provided at one end of the fixing collar (51).

2. The CNC turning and milling combined machining apparatus according to claim 1, characterized in that: The numerical control turning and milling machine base (1) is away from the numerical control turning and milling tool head switching rack (3) and is provided with a four-jaw chuck structure, the numerical control turning and milling slide rail (2) drives the numerical control turning and milling tool head switching rack (3) to move in different directions on the numerical control turning and milling machine base (1), the numerical control turning and milling tool head switching rack (3) is installed on the numerical control turning and milling slide rail (2) to realize the purpose of rotating and switching tool heads, the hydraulic cylinder (6) telescopic rod passes through one side of the numerical control turning and milling tool head switching rack (3) shell.

3. The combined turning and milling machine according to claim 1, characterized in that: The inner wall of the side cover plate ring (53) is provided with a gear ring, the rubber sleeve (54) is attached to the outside of a group of rotating tool heads (4), the spherical joint (55) is rotatably arranged in the cooling liquid storage shell (52) and communicates with the inside, and the movable frame (58) is slidably arranged with four groups of fixed circular shafts (57).

4. The combined turning and milling machine according to claim 1, characterized in that: The top protruding blocks (511) are arranged in a ring shape, the elastic memory rope (513) is in a tension state, the elastic memory rope (513) is made of Ti-Al-Cr wide-temperature super-elastic alloy and nickel-titanium-based high-temperature memory alloy material, and has shape recovery ability and fatigue resistance, the adjusting bolt (515) and the side blocking ring (514) are rotatably arranged, the adjusting bolt (515) and the adjusting ring (510) are screw-connected, the square opening (516) satisfies the movement of the second roller (521), the reset spring (519) is in a compressed state, and the limiting ring (520) is sleeved on the second roller (521) at the middle position.

5. The CNC turning and milling combined machining apparatus according to claim 1, characterized in that: The second roller (521) is attached to the outside of the rotating tool head (4), and the first gear (522) corresponds to the center position of the second roller (521).

6. The combined turning and milling machine according to claim 1, characterized in that: The first gear (522) is engaged with a group of second gears (524) arranged inside the square opening (516), another group of the second gears (524) is engaged with the gear ring of the side cover plate ring (53), and the fixed plate (525) is fixedly connected with the telescopic rod of the hydraulic cylinder (6).

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