Numerical control double-end face milling machine

Abstract

The utility model relates to a numerical control double-head end face milling machine which comprises a machine frame, a fixed machine head is arranged at one end of the machine frame, a movable machine head matched with the fixed machine head for end milling is transversely arranged on the machine frame in a sliding mode, and profile centering clamps are arranged on the inner side of the fixed machine head and the inner side of the movable machine head respectively. The sectional material in-saw clamp moves a sectional material from the edge to the middle for positioning and clamping, the fixed machine head and the movable machine head are each provided with a double-end milling mechanism, each double-end milling mechanism comprises a main sliding base arranged in a longitudinal sliding mode, the front end of each main sliding base is provided with a front end milling mechanism, and the rear end of each main sliding base is provided with a rear end milling mechanism. The front end milling mechanism and the rear end milling mechanism are matched to carry out end milling machining on a profile, and an end positioning mechanism is transversely arranged on the main sliding base. The device has the advantages of reasonable structural design, collection according to frames, large collection capacity, high mechanization degree, high collection efficiency and the like.

Description

Technical field:

[0001] The utility model relates to the technical field of profile end milling, in particular to a numerically controlled double-head end milling machine. Background technology:

[0002] End milling is an essential process in the production of doors, windows, curtain walls and sun rooms. The grooves required for assembly are formed by milling the ends of the profiles.

[0003] In order to improve the efficiency of end milling, various attempts have been made in the prior art. For example, a Chinese patent discloses a double-pressing small end milling machine (authorization announcement number: CN217394390U). This type of end milling machine mainly uses a single head, and then relies on a group of saw blades to perform reciprocating sawing and milling processing on the end of the profile. This type of end milling machine can only process one end of the profile at a time, and can only rely on a group of saw blade milling cutters to reciprocate milling on the end of the profile. The overall end milling efficiency is low and cannot meet the requirements of batch end milling processing. Another example is a Chinese patent discloses a double-headed mid-end milling (authorization announcement number: CN210817635U). This type of end milling equipment uses two heads to perform end milling on both ends of the profile respectively, which significantly improves the efficiency of end milling of the profile. However, this type of end milling equipment still uses a group of saw blade milling cutters for end milling, and for the convenience of profile feeding, the profile is usually placed at the front end. Affected by the travel of the saw blade milling cutter, the saw blade milling cutter can only feed the end milling, and can only return to the original path when retreating, and cannot perform end milling, which seriously restricts the further development of end milling equipment. Therefore, it is very necessary to further optimize the double-head end milling equipment under the existing double-head end milling design concept, in order to further improve the end milling efficiency.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention:

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to provide a rotary material storage for collecting profiles by frame, which has the advantages of reasonable structural design, collection by frame, large collection capacity, high degree of mechanization, high collection efficiency, etc.

[0006] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:

[0007] A CNC double-head end face milling machine comprises a frame, a fixed head is provided at one end of the frame, a movable head is provided on the frame for transverse sliding movement to cooperate with the fixed head for end milling, a profile centering clamp is provided on the inner sides of the fixed head and the movable head respectively, the profile sawing clamp moves the profile from the edge to the middle for positioning and clamping, a double-end milling mechanism is provided on the fixed head and the movable head respectively, the double-end milling mechanism comprises a main slide seat arranged for longitudinal sliding, a front end milling mechanism is provided at the front end of the main slide seat, and a rear end milling mechanism is provided at the rear end, the front end milling mechanism and the rear end milling mechanism cooperate to perform end milling on the profile, and an end positioning mechanism is provided transversely on the main slide seat.

[0008] A guide rail and a rack are transversely arranged on the frame, the movable head is arranged on the guide rail, a reducer is arranged on the movable head, a servo motor is arranged at the input end of the reducer, and a gear meshing with the rack is arranged at the output end.

[0009] The fixed head and the movable head have the same structure, including a rectangular base frame, a vertical beam A is provided on the inner side of the rectangular base frame, and vertical beams B are respectively provided in the middle and outer sides of the rectangular base frame. The height of the vertical beam A is less than the height of the vertical beam B. A longitudinal beam A is provided at the upper end between the two vertical beams A arranged longitudinally, and a longitudinal beam B is provided between the two vertical beams B arranged longitudinally. A cross beam A is provided between the vertical beam A and the longitudinal beam B, and a cross beam B is provided between the two vertical beams B. The profile centering fixture is provided on the longitudinal beam A, and the main slide is longitudinally slidably provided on the two longitudinal beams B in a hoisting manner.

[0010] The profile centering fixture includes a centering cylinder and a centering guide rail longitudinally arranged on the longitudinal beam A, a centering slide is provided on the centering guide rail, positioning columns and a clamping cylinder are longitudinally spaced on the centering slide, the clamping cylinder is connected to a clamping plate, a clamping seat is provided in the middle of the longitudinal beam A, a clamping cylinder is vertically arranged on the clamping seat, a guide slide rail is vertically arranged on the clamping seat, a clamping plate is provided on the guide slide rail, and the clamping plate is connected to the clamping cylinder.

[0011] The double-end milling mechanism includes a guide rail A arranged on the longitudinal beam B, a main slide is provided on the guide rail A, a main beam frame is provided at the lower end of the main slide, the main beam frame is located between the two longitudinal beams B, the main slide and the main beam frame constitute the main slide seat, one of the longitudinal beams B is provided with a rack A, the main slide is provided with a reducer A, the input end of the reducer A is provided with a servo motor A, and the output end is provided with a gear A meshing with the rack A.

[0012] The front end milling mechanism includes a front guide rail B vertically arranged at the front end of the main beam, a front slide B is provided on the front guide rail B, a front nut seat B and a front nut B are provided on the front slide B, a front servo motor B is provided at the upper end of the main beam, the front servo motor B is connected to a front lead screw B, the front lead screw B is connected to the front nut B, a front slider C is transversely provided on the front slide B, a front guide rail C is provided on the front slider C, a front slide C is provided on the front guide rail C, a front servo motor C is provided on the front slide C, the front servo motor C is connected to the front lead screw C, a front nut seat C and a front nut C are provided on the front slide B, the front lead screw C is connected to the front nut C, a double-headed spindle motor A is vertically provided at the front end of the front slide C, and a milling cutter A is provided at both ends of the double-headed spindle motor A.

[0013] The rear end milling mechanism includes a rear guide rail B vertically arranged at the rear end of the main beam frame, a rear slide seat B is arranged on the rear guide rail B, a rear nut seat B and a rear nut B are arranged on the rear slide seat B, a rear servo motor B is arranged at the upper end of the main beam frame, the rear servo motor B is connected to a rear lead screw B, the rear lead screw B is connected to the rear nut B, a rear slider C is horizontally arranged on the rear slide seat B, a rear guide rail C is arranged on the rear slider C, a rear guide rail C is arranged on the rear slide seat C, a rear servo motor C is arranged on the rear slide seat C, and the rear servo motor C is connected to a rear screw C, a rear nut seat C and a rear nut C are provided on the rear slide B, the rear screw C is connected to the rear nut C, a bearing seat is longitudinally provided at the front end of the rear slide C, a rotating shaft is rotatably provided on the bearing seat through a bearing, a rotating seat is provided at the inner end of the rotating shaft, a double-headed spindle motor B is provided on the rotating seat, milling cutters B are respectively provided at both ends of the double-headed spindle motor B, a rotating swing arm is provided at the outer end of the rotating shaft, a rotating drive cylinder is rotatably provided on the rear slide C, and the rotating drive cylinder is connected to the rotating swing arm.

[0014] The end positioning mechanism includes a mounting plate laterally arranged on the main beam frame, an end positioning cylinder is provided on the mounting plate, the end positioning cylinder is connected to the end positioning plate, a flange linear bearing is provided on the mounting plate, a guide shaft is provided on the end positioning plate, and the guide shaft is installed on the flange linear bearing.

[0015] The utility model adopts the above structure, which can bring the following beneficial effects:

[0016] This application can move the profile from the edge to the middle for clamping and positioning by designing a profile centering fixture. This structural design leaves enough end milling space in front and behind the profile, so that the milling cutter can be fed and retracted for end milling, significantly improving the end milling efficiency. By using a hoisting structure to install the main slide, end milling debris can be prevented from falling onto the guide rails, effectively protecting the guide rails, helping to ensure operating accuracy and extend service life. By designing a front-end milling mechanism and a rear-end milling mechanism, two sets of milling cutters can be used for end milling, which can not only meet the requirements of more styles of end milling processing, but also significantly improve the end milling efficiency. Description of the drawings:

[0017] Figure 1 It is a top view of the CNC double-head end milling machine of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the utility model CNC double-head end milling machine;

[0019] Figure 3 It is a structural schematic diagram of the fixed head and the movable head of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the profile centering fixture of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the double-end milling mechanism of the utility model;

[0022] Figure 6 This is a structural schematic diagram of the front end milling mechanism of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the front end milling mechanism of the utility model with the front slide C omitted;

[0024] Figure 8 It is a structural schematic diagram of the rear end milling mechanism of the utility model;

[0025] Fig. 9 It is a top view structural schematic diagram of the rear end milling mechanism of the utility model;

[0026] Fig.10 This is a schematic diagram of the structure of the rear end milling mechanism of the utility model with the rear slide C omitted;

[0027] Fig.11 It is a structural schematic diagram of the end positioning mechanism of the utility model;

[0028] In the figure, 1, frame, 2, fixed head, 201, rectangular base frame, 202, vertical beam A, 203, vertical beam B, 204, longitudinal beam A, 205, longitudinal beam B, 206, cross beam A, 207, cross beam B, 3, movable head, 4, profile centering fixture, 401, centering cylinder, 402, centering guide rail, 403, centering slide, 404, positioning column, 405, clamping cylinder, 406, clamping plate, 407, clamping seat, 408, clamping cylinder, 409, guide slide, 410, clamping Plate, 5, double-end milling mechanism, 501, main slide, 502, guide rail A, 503, main slide, 504, main beam, 505, rack A, 506, reducer A, 507, servo motor A, 508, gear A, 6, front end milling mechanism, 601, front guide rail B, 602, front slide B, 603, front screw nut B, 604, front screw nut B, 605, front servo motor B, 606, front screw B, 607, front slide C, 608, front guide rail C, 609, front slide C, 610 , front servo motor C, 611, front lead screw C, 612, front screw nut C, 613, front screw nut C, 614, double-head spindle motor A, 615, milling cutter A, 7, rear end milling mechanism, 701, rear guide rail B, 702, rear slide B, 703, rear screw nut B, 704, rear screw nut B, 705, rear servo motor B, 706, rear lead screw B, 707, rear slider C, 708, rear guide rail C, 709, rear slide C, 710, rear servo motor C, 711, rear lead screw C, 712, Rear nut seat C, 713, rear nut C, 714, bearing seat, 715, rotating shaft, 716, rotating seat, 717, double-headed spindle motor B, 718, milling cutter B, 719, rotating arm, 720, rotating drive cylinder, 8, end positioning mechanism, 801, mounting plate, 802, end positioning cylinder, 803, end positioning plate, 804, flange linear bearing, 805, guide shaft, 9, guide rail, 10, rack, 11, reducer, 12, servo motor, 13, gear, 14, profile. Specific implementation method:

[0029] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0032] In addition, the terms "upper end", "lower end", "lateral", "longitudinal", "vertical", "A", "B", etc. are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the position of the indicated technical features.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-11 As shown, a CNC double-head end face milling machine comprises a frame 1, a fixed head 2 is provided at one end of the frame 1, a movable head 3 is provided on the frame 1 for end milling in cooperation with the fixed head 2 for sliding transversely, a profile centering clamp 4 is provided on the inner sides of the fixed head 2 and the movable head 3 respectively, the profile sawing clamp 4 moves the profile 14 from the edge to the middle for positioning and clamping, a double-end milling mechanism 5 is provided on the fixed head 2 and the movable head 3 respectively, the double-end milling mechanism 5 comprises a main slide 501 arranged for longitudinal sliding, a front end milling mechanism 6 is provided at the front end of the main slide 501, and a rear end milling mechanism 7 is provided at the rear end, the front end milling mechanism 6 and the rear end milling mechanism 7 cooperate to perform end milling on the profile 14, and an end positioning mechanism 8 is provided transversely on the main slide 501. By designing the profile centering fixture 4, the profile 14 can be moved from the edge to the middle for clamping and positioning. This structural design leaves enough end milling space in front and behind the profile, so that the milling cutter can be fed and retracted for end milling, which significantly improves the end milling efficiency. By designing the front end milling mechanism and the rear end milling mechanism, two sets of milling cutters can be used for end milling, which can not only meet more styles of end milling processing requirements, but also significantly improve the end milling efficiency.

[0035] The frame 1 is laterally provided with a guide rail 9 and a rack 10, the guide rail 9 is provided with the movable head 3, the movable head 2 is provided with a reducer 11, the input end of the reducer 11 is provided with a servo motor 12, and the output end is provided with a gear 13 meshing with the rack 10. The servo motor 12 and the rack and pinion transmission are used to achieve accurate and rapid driving of the movable head to move laterally.

[0036] The fixed head 2 and the movable head 3 have the same structure, including a rectangular base frame 201, a vertical beam A202 is provided inside the rectangular base frame 201, and vertical beams B203 are provided in the middle and outside of the rectangular base frame 201, respectively. The height of the vertical beam A202 is less than that of the vertical beam B203, a longitudinal beam A204 is provided at the upper end between the two vertical beams A202 arranged longitudinally, a longitudinal beam B205 is provided between the two vertical beams B203 arranged longitudinally, a cross beam A206 is provided between the vertical beam A202 and the longitudinal beam B203, and a cross beam B207 is provided between the two vertical beams B203, the profile centering fixture 4 is provided on the longitudinal beam A204, and the main slide 501 is longitudinally slidably provided on the two longitudinal beams B205 in a hoisting manner. The specific structure of the fixed head 2 and the movable head 3 is given to facilitate the installation of the profile centering fixture 4 and the hoisting installation of the main slide 501.

[0037] The profile centering fixture 4 includes a centering cylinder 401 and a centering guide rail 402 longitudinally arranged on the longitudinal beam A204, a centering slide 403 is arranged on the centering guide rail 402, a positioning column 404 and a clamping cylinder 405 are longitudinally arranged on the centering slide 403, and a clamping plate 406 is connected to the clamping cylinder 405, a clamping seat 407 is arranged in the middle of the longitudinal beam A204, a clamping cylinder 408 is vertically arranged on the clamping seat 407, a guide rail 409 is vertically arranged on the clamping seat 407, a clamping plate 410 is arranged on the guide rail 409, and the clamping plate 410 is connected to the clamping cylinder 408. A specific structure is given to realize the positioning and clamping of the profile 14 by moving it from the edge to the middle.

[0038] The double-end milling mechanism 5 includes a guide rail A502 arranged on the longitudinal beam B205, a main slide 503 is arranged on the guide rail A502, a main beam frame 504 is arranged at the lower end of the main slide 503, the main beam frame 504 is located between the two longitudinal beams B205, the main slide 503 and the main beam frame 504 constitute the main slide 501, a rack A505 is arranged on one of the longitudinal beams B205, a reducer A506 is arranged on the main slide 503, a servo motor A507 is arranged at the input end of the reducer A506, and a gear A508 meshing with the rack A505 is arranged at the output end. The servo motor A507 and the gear rack transmission are used to realize the rapid and accurate longitudinal movement adjustment of the main slide 501 designed for hoisting.

[0039] The front end milling mechanism 6 includes a front guide rail B601 vertically arranged at the front end of the main beam frame 504, a front slide B602 is arranged on the front guide rail B601, a front nut seat B603 and a front nut B604 are arranged on the front slide B602, a front servo motor B605 is arranged at the upper end of the main beam frame 504, the front servo motor B605 is connected to a front lead screw B606, the front lead screw B606 is connected to the front nut B604, a front slider C607 is horizontally arranged on the front slide B602, and the front slider C60 7 is provided with a front guide rail C608, the front guide rail C608 is provided with a front slide C609, the front slide C609 is provided with a front servo motor C610, the front servo motor C610 is connected with a front screw C611, the front slide B602 is provided with a front screw nut C612 and a front screw nut C613, the front screw C611 is connected with the front screw nut C613, the front end of the front slide C609 is vertically provided with a double-headed spindle motor A614, and the two ends of the double-headed spindle motor A614 are respectively provided with milling cutters A615. The servo motor and screw drive are used to realize the vertical and horizontal adjustment of the position of the milling cutter A, thereby meeting the diverse end milling needs.

[0040] The rear end milling mechanism 7 includes a rear guide rail B701 vertically arranged at the rear end of the main beam frame 504, a rear slide B702 is provided on the rear guide rail B701, a rear nut seat B703 and a rear nut B704 are provided on the rear slide B702, a rear servo motor B705 is provided at the upper end of the main beam frame 504, the rear servo motor B705 is connected to a rear lead screw B706, the rear lead screw B706 is connected to the rear nut B704, a rear slider C707 is horizontally provided on the rear slide B702, a rear guide rail C708 is provided on the rear slider C707, a rear slide C709 is provided on the rear guide rail C708, a rear servo motor C710 is provided on the rear slide C709, and the rear servo motor C710 is provided on the rear servo motor C711. 0 is connected with a rear screw C711, the rear slide seat B702 is provided with a rear nut seat C712 and a rear nut C713, the rear screw C711 is connected with the rear nut C713, the front end of the rear slide seat C709 is longitudinally provided with a bearing seat 714, a rotating shaft 715 is rotatably provided on the bearing seat 714 through a bearing, a rotating seat 716 is provided at the inner end of the rotating shaft 715, a double-headed spindle motor B717 is provided on the rotating seat 716, milling cutters B718 are respectively provided at both ends of the double-headed spindle motor B717, a rotating swing arm 719 is provided at the outer end of the rotating shaft 715, a rotating drive cylinder 720 is rotatably provided on the rear slide seat C709, and the rotating drive cylinder 720 is connected with the rotating swing arm 719. The servo motor and lead screw drive are used to realize the vertical and lateral movement adjustment of the milling cutter B. At the same time, a rotational degree of freedom is added, so that the milling cutter B can be rotated 90° to meet the needs of large-area milling and further improve the end milling efficiency.

[0041] The end positioning mechanism 8 includes a mounting plate 801 transversely arranged on the main beam frame 504, an end positioning cylinder 802 is arranged on the mounting plate 801, the end positioning cylinder 802 is connected to an end positioning plate 803, a flange linear bearing 804 is arranged on the mounting plate 801, a guide shaft 805 is arranged on the end positioning plate 803, and the guide shaft 805 is installed on the flange linear bearing 804. The end positioning mechanism 8 is used to accurately position the end of the profile and provide a reference for end milling.

[0042] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0043] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. CNC double-head end milling machine, characterized in that: It includes a frame, one end of which is provided with a fixed machine head, and a movable machine head is provided on the frame for transverse sliding movement to cooperate with the fixed machine head for end milling, the inner sides of the fixed machine head and the movable machine head are respectively provided with profile centering clamps, and the profile sawing clamps move the profile from the edge to the middle for positioning and clamping, and the fixed machine head and the movable machine head are respectively provided with double-end milling mechanisms, and the double-end milling mechanisms include a main slide seat arranged for longitudinal sliding, a front end milling mechanism is provided at the front end of the main slide, and a rear end milling mechanism is provided at the rear end, the front end milling mechanism and the rear end milling mechanism cooperate to perform end milling on the profile, and an end positioning mechanism is provided transversely on the main slide.

2. The CNC double-head face milling machine according to claim 1, characterized in that: A guide rail and a rack are transversely arranged on the frame, the movable head is arranged on the guide rail, a reducer is arranged on the movable head, a servo motor is arranged at the input end of the reducer, and a gear meshing with the rack is arranged at the output end.

3. The CNC double-head face milling machine according to claim 2, characterized in that: The fixed head and the movable head have the same structure, including a rectangular base frame, a vertical beam A is provided on the inner side of the rectangular base frame, and vertical beams B are respectively provided in the middle and outer sides of the rectangular base frame. The height of the vertical beam A is less than the height of the vertical beam B. A longitudinal beam A is provided at the upper end between the two vertical beams A arranged longitudinally, and a longitudinal beam B is provided between the two vertical beams B arranged longitudinally. A cross beam A is provided between the vertical beam A and the longitudinal beam B, and a cross beam B is provided between the two vertical beams B. The profile centering fixture is provided on the longitudinal beam A, and the main slide is longitudinally slidably provided on the two longitudinal beams B in a hoisting manner.

4. The CNC double-head face milling machine according to claim 1 or 3, characterized in that: The profile centering fixture includes a centering cylinder and a centering guide rail longitudinally arranged on the longitudinal beam A, a centering slide is provided on the centering guide rail, positioning columns and a clamping cylinder are longitudinally spaced on the centering slide, the clamping cylinder is connected to a clamping plate, a clamping seat is provided in the middle of the longitudinal beam A, a clamping cylinder is vertically arranged on the clamping seat, a guide slide rail is vertically arranged on the clamping seat, a clamping plate is provided on the guide slide rail, and the clamping plate is connected to the clamping cylinder.

5. The CNC double-head end milling machine according to claim 4, characterized in that: The double-end milling mechanism includes a guide rail A arranged on the longitudinal beam B, a main slide is provided on the guide rail A, a main beam frame is provided at the lower end of the main slide, the main beam frame is located between the two longitudinal beams B, the main slide and the main beam frame constitute the main slide seat, one of the longitudinal beams B is provided with a rack A, the main slide is provided with a reducer A, the input end of the reducer A is provided with a servo motor A, and the output end is provided with a gear A meshing with the rack A.

6. The CNC double-head face milling machine according to claim 5, characterized in that: The front end milling mechanism includes a front guide rail B vertically arranged at the front end of the main beam, a front slide B is provided on the front guide rail B, a front nut seat B and a front nut B are provided on the front slide B, a front servo motor B is provided at the upper end of the main beam, the front servo motor B is connected to a front lead screw B, the front lead screw B is connected to the front nut B, a front slider C is transversely provided on the front slide B, a front guide rail C is provided on the front slider C, a front slide C is provided on the front guide rail C, a front servo motor C is provided on the front slide C, the front servo motor C is connected to the front lead screw C, a front nut seat C and a front nut C are provided on the front slide B, the front lead screw C is connected to the front nut C, a double-headed spindle motor A is vertically provided at the front end of the front slide C, and a milling cutter A is provided at both ends of the double-headed spindle motor A.

7. The CNC double-head face milling machine according to claim 6, characterized in that: The rear end milling mechanism includes a rear guide rail B vertically arranged at the rear end of the main beam frame, a rear slide seat B is arranged on the rear guide rail B, a rear nut seat B and a rear nut B are arranged on the rear slide seat B, a rear servo motor B is arranged at the upper end of the main beam frame, the rear servo motor B is connected to a rear lead screw B, the rear lead screw B is connected to the rear nut B, a rear slider C is horizontally arranged on the rear slide seat B, a rear guide rail C is arranged on the rear slider C, a rear guide rail C is arranged on the rear slide seat C, a rear servo motor C is arranged on the rear slide seat C, and the rear servo motor C is connected to a rear screw C, a rear nut seat C and a rear nut C are provided on the rear slide B, the rear screw C is connected to the rear nut C, a bearing seat is longitudinally provided at the front end of the rear slide C, a rotating shaft is rotatably provided on the bearing seat through a bearing, a rotating seat is provided at the inner end of the rotating shaft, a double-headed spindle motor B is provided on the rotating seat, milling cutters B are respectively provided at both ends of the double-headed spindle motor B, a rotating swing arm is provided at the outer end of the rotating shaft, a rotating drive cylinder is rotatably provided on the rear slide C, and the rotating drive cylinder is connected to the rotating swing arm.

8. The CNC double-head face milling machine according to claim 7, characterized in that: The end positioning mechanism includes a mounting plate laterally arranged on the main beam frame, an end positioning cylinder is provided on the mounting plate, the end positioning cylinder is connected to the end positioning plate, a flange linear bearing is provided on the mounting plate, a guide shaft is provided on the end positioning plate, and the guide shaft is installed on the flange linear bearing.

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