A double-tool-tower horizontal turning and milling combined machine tool

Abstract

This utility model relates to a dual-turret horizontal turning and milling composite machine tool. It solves the technical problems of wasted time and reduced machining accuracy in existing parts processing. It includes a machine bed, with a centrally located spindle unit at the upper center. The centrally located spindle unit has a braked electric spindle assembly, one end of which is connected to a chuck body, and the other end is equipped with a chuck clamping drive assembly. Power turrets are located on both sides of the upper part of the machine bed, with the centrally located spindle unit situated between the two power turrets. Turning, milling, and drilling / milling components are mounted on the power turrets. A longitudinal and transverse movement drive mechanism for the turrets is located between the power turrets and the machine bed. The advantages are: with one power turret on each side of the machine bed, multiple processes can be performed simultaneously on both sides of the workpiece. Automatic tool changing is achieved through the tool mounting stations circumferentially on the turret bodies, shortening clamping time and reducing process changeover time compared to single-turret machine tools.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool equipment technology, specifically relating to a double-turret horizontal turning and milling composite machine tool. Background Technology

[0002] Traditional machining methods typically employ single-turret CNC lathes, equipped with only one set of tools. When machining parts through multiple processes, tool changes are required after each process, wasting a significant amount of time and resulting in low overall machining efficiency. Alternatively, multiple different types of machine tools can be used to complete different processes, but transferring and clamping the workpiece between different machine tools also consumes a lot of time. Furthermore, due to multiple clamping operations, clamping errors inevitably occur, affecting machining accuracy. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a dual-turret horizontal turning and milling composite machine tool.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dual-turret horizontal turning and milling composite machine tool, comprising a bed, wherein a horizontally arranged central spindle device is provided at the middle of the upper part of the bed, the central spindle device having a braked electric spindle assembly, one end of the braked electric spindle assembly being connected to a chuck body for clamping the workpiece and the other end being provided with a chuck clamping drive assembly, power turret devices being horizontally movable on both sides of the upper part of the bed, and the central spindle device being located between the two power turret devices, wherein a turning assembly, a milling assembly, and a drilling and milling assembly are mounted on the power turret device, and a longitudinal turret movement drive device capable of driving the power turret device to move horizontally in a direction parallel to the central spindle device and a transverse turret movement drive device capable of driving the power turret device to move horizontally in a direction closer to or further away from the central spindle device are provided between the power turret device and the bed, the latter being a longitudinal turret movement drive device capable of driving the power turret device to move horizontally in a direction closer to or further away from the central spindle device. The machine bed is equipped with power turrets on both sides and a centrally located spindle, forming a symmetrical structure that allows for simultaneous machining of both sides of the workpiece, improving machining efficiency and symmetry accuracy. The power turrets also integrate turning, milling, and drilling-milling components, supporting combined turning and milling machining, reducing the number of workpiece clamping operations, and lowering positioning errors. Furthermore, the longitudinal and transverse movement drives of the turrets are independently set, allowing for the movement of the power turrets and achieving multi-axis linkage to meet the machining needs of complex parts.

[0005] In the aforementioned dual-turret horizontal milling and turning machine tool, a chip removal groove is provided at the upper end of the machine bed, and the chuck body and the power turret device are both located above the chip removal groove. The chip removal groove has inclined chip guiding surfaces on both sides. Located below the chuck body and the power turret device, the chip removal groove, in conjunction with the inclined chip guiding surfaces, utilizes gravity to accelerate chip falling, preventing chip accumulation from affecting machining accuracy and reducing downtime for cleaning.

[0006] In the aforementioned dual-turret horizontal milling and turning machine tool, a spindle mounting column, integrally formed with the machine bed, is vertically mounted at the upper center of the machine bed. The centrally located spindle device is positioned at the upper end of the spindle mounting column. The spindle mounting column is integrally formed with the machine bed, reducing connection gaps, improving the rigidity of the spindle system, and reducing vibration during high-speed rotation, making it suitable for high-torque cutting.

[0007] In the aforementioned dual-turret horizontal milling and turning machine tool, the centrally located spindle device includes a spindle box mounted on the upper end of the spindle mounting column. The electric spindle assembly with brake is horizontally inserted into the spindle box. The chuck clamping drive assembly is a chuck drive cylinder located at the end of the electric spindle assembly away from the chuck body. The chuck body is connected to the chuck drive cylinder via a chuck tie rod inserted within the electric spindle assembly with brake. The electric spindle assembly with brake enables rapid start-stop and precise positioning, facilitating tool changes or indexing operations during multi-process machining, thus improving machining efficiency. Furthermore, the electric spindle assembly with brake facilitates milling operations when braked and stationary. The chuck drive cylinder, connected to the chuck body via a tie rod, provides stable clamping force, adapting to different workpiece diameters. The hydraulic system also offers fast response, enabling automatic clamping or release.

[0008] In the aforementioned dual-turret horizontal turning and milling machine tool, the power turret device includes a turret body and a turret drive mechanism. The turret body has several tool mounting positions on its circumferential outer side. Reverse tool holders are mounted on these tool mounting positions, and the turning assembly, milling assembly, and drilling / milling assembly are respectively and correspondingly mounted on the reverse tool holders. The multiple tool mounting positions on the turret body, combined with the reverse tool holders, allow for the mounting of different types of tools, enabling seamless process switching. The reverse tool holders change the tool mounting direction, potentially optimizing cutting force distribution and reducing tool interference, making it particularly suitable for deep hole machining or complex surface cutting.

[0009] In the aforementioned dual-turret horizontal milling and turning machine tool, turret drive mounting seats are respectively provided on both sides of the spindle mounting column, and turret drive mounting parts are respectively provided on both sides of the turret drive mounting seats, with a turret drive mounting groove between the two turret drive mounting parts. The turret drive mounting seats are integrated with the machine bed, providing a stable drive system mounting platform.

[0010] In the aforementioned dual-turret horizontal milling and turning composite machine tool, the turret transverse movement drive device includes a transverse linear rail disposed at the upper end of the turret drive mounting part, a transverse slide table disposed at the upper end of the turret drive mounting base, a plurality of transverse sliders corresponding to the transverse linear rail disposed at the lower end of the transverse slide table, and a transverse lead screw nut drive assembly connected to the transverse slide table disposed in the turret drive mounting groove.

[0011] In the aforementioned dual-turret horizontal milling and turning composite machine tool, the transverse lead screw and nut drive assembly includes a transverse drive motor disposed on the outer side of the end of the turret drive mounting slot away from the spindle mounting column, a transverse lead screw connected to the transverse drive motor is disposed in the turret drive mounting slot, and a transverse nut connected to the transverse lead screw is connected to the lower end of the transverse slide.

[0012] In the aforementioned dual-turret horizontal milling and turning composite machine tool, the turret longitudinal movement drive device includes a longitudinal drive groove disposed on the inner side of the upper end of the transverse slide, longitudinal linear guides are respectively disposed on both sides of the upper end of the transverse slide, a longitudinal slide is disposed on the upper end of the transverse slide, and a plurality of longitudinal sliders corresponding to the longitudinal linear guides are disposed at the lower end of the longitudinal slide. A longitudinal screw nut drive assembly connected to the longitudinal slide is disposed in the longitudinal drive groove, and the power turret device is disposed on the upper end of the longitudinal slide.

[0013] In the aforementioned dual-turret horizontal turning and milling composite machine tool, the longitudinal lead screw and nut drive assembly includes a longitudinal drive motor disposed on the outer side of one end of the longitudinal drive groove, a longitudinal lead screw connected to the longitudinal drive motor is disposed in the longitudinal drive groove, and a longitudinal nut connected to the longitudinal lead screw is connected to the lower end of the longitudinal slide.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The machine bed is equipped with a power turret on each side, which can simultaneously perform multiple processes such as turning, milling, and drilling on both sides of the workpiece. Automatic tool changing is achieved through the tool mounting station on the circumference of the turret body, without manual intervention, shortening the clamping time and reducing the process changeover time compared with single turret machine tools.

[0016] 2. The centrally mounted spindle of this device is fixed to the middle of the bed by an integrated spindle mounting column. The electric spindle assembly with brake has high coaxiality with the chuck body. Combined with the precise clamping of the chuck drive cylinder, it reduces spindle vibration and can maintain workpiece positioning accuracy during high-speed cutting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the bed structure in this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the electric spindle assembly with brake in this utility model.

[0020] Figure 4 This is an exploded view of the turret longitudinal movement drive device and the turret lateral movement drive device in this utility model.

[0021] In the diagram: 1. Bed; 11. Chip dropper; 12. Chip guide surface; 13. Spindle mounting column; 14. Turret drive mounting base; 15. Turret drive mounting part; 16. Turret drive mounting slot; 2. Centrally located spindle device; 21. Spindle box; 3. Electric spindle assembly with brake; 31. Chuck body; 32. Chuck clamping drive assembly; 33. Chuck drive cylinder; 4. Power turret device; 41. Turret body; 42. Turret drive mechanism; 43. Tool mounting station; 44. Reverse tool holder; 5. Turret longitudinal movement drive device; 51. Longitudinal drive slot; 52. Longitudinal linear guide; 53. Longitudinal slide; 54. Longitudinal lead screw and nut drive assembly; 55. Longitudinal drive motor; 56. Longitudinal lead screw; 57. Longitudinal nut; 58. Turret transverse movement drive device; 61. Transverse linear guide; 62. Transverse slide; 63. Transverse lead screw and nut drive assembly; 64. Transverse drive motor; 65. Transverse lead screw; 66. Transverse nut. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-4 As shown, a dual-turret horizontal turning and milling composite machine tool includes a bed 1. A horizontally arranged central spindle device 2 is provided at the middle of the upper end of the bed 1. The central spindle device 2 has a braked electric spindle assembly 3. One end of the braked electric spindle assembly 3 is connected to a chuck body 31 for clamping the workpiece, and the other end is provided with a chuck clamping drive assembly 32. Power turret devices 4 are horizontally movable on both sides of the upper end of the bed 1, and the central spindle device 2 is located between the two power turret devices 4. Turning assembly, milling assembly and drilling and milling assembly are installed on the power turret devices 4. A longitudinal turret movement drive device 5 that can drive the power turret devices 4 to move horizontally in a direction parallel to the central spindle device 2 and a transverse turret movement drive device 6 that can drive the power turret devices 4 to move horizontally in a direction closer to or further away from the central spindle device 2 are provided between the power turret devices 4 and the bed 1. The machine bed 1 is equipped with power turret devices 4 on both sides and the central spindle device 2 is located in the middle, forming a symmetrical structure. This allows for simultaneous processing of both sides of the workpiece, improving processing efficiency and symmetry accuracy. At the same time, the power turret device 4 integrates turning, milling, and drilling-milling components, supporting combined turning and milling machining, reducing the number of workpiece clamping operations, and lowering positioning errors. Furthermore, the longitudinal movement drive device 5 and the transverse movement drive device 6 of the turret are set independently, moving the power turret device 4 separately to achieve multi-axis linkage and meet the processing requirements of complex parts.

[0024] Combination Figure 1 and Figure 2As shown, the upper end of the machine bed 1 is provided with a chip removal groove 11, and the chuck body 31 and the power turret device 4 are both located above the chip removal groove 11. The chip removal groove 11 has inclined chip guiding surfaces 12 on both sides. The chip removal groove 11 is located below the chuck body 31 and the power turret device 4. In conjunction with the inclined chip guiding surfaces 12, it uses gravity to accelerate the falling of chips, avoids chip accumulation that affects machining accuracy, and reduces downtime for cleaning.

[0025] The bed 1 has a vertically integrated spindle mounting column 13 at its upper center, and the centrally located spindle device 2 is positioned on top of the spindle mounting column 13. The spindle mounting column 13 is integrally formed with the bed 1, reducing connection gaps, improving the rigidity of the spindle system, reducing vibration during high-speed rotation, and making it suitable for high-torque cutting.

[0026] Combination Figure 1 and Figure 3 As shown, the centrally mounted spindle device 2 includes a spindle box 21 located at the upper end of the spindle mounting column 13. A braked electric spindle assembly 3 is horizontally inserted into the spindle box 21. The chuck clamping drive assembly 32 is a chuck drive cylinder 33 located at the end of the braked electric spindle assembly 3 away from the chuck body 31. The chuck body 31 is connected to the chuck drive cylinder 33 via a chuck tie rod inserted into the braked electric spindle assembly 3. The braked electric spindle assembly 3 enables rapid start-stop and precise positioning, facilitating tool changes or indexing operations during multi-process machining, thus improving machining efficiency. Simultaneously, the braked electric spindle assembly 3 is beneficial for milling operations when braked and stationary. Furthermore, the chuck drive cylinder 33 is connected to the chuck body 31 via a tie rod, providing stable clamping force to adapt to different workpiece diameters. The hydraulic system also has a fast response, enabling automatic clamping or release.

[0027] like Figure 1 As shown, the power turret device 4 includes a turret body 41 and a turret drive mechanism 42. The turret body 41 has several tool mounting positions 43 on its outer circumference. Reverse tool holders 44 are mounted on the tool mounting positions 43, and turning components, milling components, and drilling / milling components are respectively and correspondingly mounted on the reverse tool holders 44. The multiple tool mounting positions 43 on the circumference of the turret body 41, combined with the reverse tool holders 44, allow for the mounting of different types of tools, enabling seamless switching between processes. The reverse tool holders 44 change the tool mounting direction, potentially optimizing the cutting force distribution and reducing tool interference, making it particularly suitable for deep hole machining or complex surface cutting.

[0028] like Figure 2 As shown, turret drive mounting seats 14 are provided on both sides of the spindle mounting column 13, and turret drive mounting parts 15 are provided on both sides of the turret drive mounting seats 14, with a turret drive mounting groove 16 between the two turret drive mounting parts 15. The turret drive mounting seats 14 are integrated with the bed 1, providing a stable drive system mounting platform.

[0029] like Figure 4As shown, the turret lateral movement drive device 6 includes a lateral linear rail 61 disposed on the upper end of the turret drive mounting part 15, a lateral slide 62 disposed on the upper end of the turret drive mounting base 14, a plurality of lateral sliders 63 corresponding to the lateral linear rail 61 disposed on the lower end of the lateral slide 62, and a lateral screw nut drive assembly 64 connected to the lateral slide 62 disposed in the turret drive mounting groove 16.

[0030] The transverse lead screw and nut drive assembly 64 includes a transverse drive motor 65 disposed on the outer side of the end of the turret drive mounting slot 16 away from the spindle mounting column 13, a transverse lead screw 66 connected to the transverse drive motor 65 is disposed in the turret drive mounting slot 16, and a transverse nut 67 connected to the transverse lead screw 66 is connected to the lower end of the transverse slide 62.

[0031] Specifically, the turret longitudinal movement drive device 5 includes a longitudinal drive groove 51 disposed on the inner side of the upper end of the transverse slide 62, longitudinal rails 52 are respectively disposed on both sides of the upper end of the transverse slide 62, a longitudinal slide 53 is disposed at the upper end of the transverse slide 62, and a plurality of longitudinal sliders 54 corresponding to the longitudinal rails 52 are disposed at the lower end of the longitudinal slide 53. A longitudinal screw nut drive assembly 55 connected to the longitudinal slide 53 is disposed in the longitudinal drive groove 51, and the power turret device 4 is disposed at the upper end of the longitudinal slide 53.

[0032] Meanwhile, the longitudinal lead screw nut drive assembly 55 includes a longitudinal drive motor 56 disposed on the outer side of one end of the longitudinal drive groove 51, a longitudinal lead screw 57 connected to the longitudinal drive motor 56 disposed in the longitudinal drive groove 51, and a longitudinal nut 58 connected to the longitudinal lead screw 57 is connected to the lower end of the longitudinal slide table 53.

[0033] The principle of this embodiment is as follows:

[0034] The workpiece is mounted on the chuck body 31, and the workpiece is fixed by the chuck drive cylinder 33 and the chuck pull rod. The two power turret devices 4 move towards the workpiece under the drive of the turret longitudinal movement drive device 5 and the turret transverse movement drive device 6. The workpiece is turned under the drive of the braked electric spindle assembly 3. At the same time, the braked electric spindle assembly 3 keeps the workpiece stationary for milling, providing stability. The turret body 41 performs tool changing under the control of the turret drive mechanism 42.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this paper extensively uses the following components: bed 1, chip flue 11, chip guide surface 12, spindle mounting column 13, turret drive mounting base 14, turret drive mounting part 15, turret drive mounting slot 16, centrally located spindle device 2, spindle box 21, electric spindle assembly with brake 3, chuck body 31, chuck clamping drive assembly 32, chuck drive cylinder 33, power turret device 4, turret body 41, turret drive mechanism 42, tool mounting station 43, reverse tool holder 44, turret longitudinal movement The terminology used includes: 5. Longitudinal drive device; 51. Longitudinal drive groove; 52. Longitudinal linear guide; 53. Longitudinal slide table; 54. Longitudinal slider; 55. Longitudinal lead screw and nut drive assembly; 56. Longitudinal drive motor; 57. Longitudinal lead screw; 58. Longitudinal nut; 6. Turret lateral movement drive device; 61. Lateral linear guide; 62. Lateral slide table; 63. Lateral slider; 64. Lateral lead screw and nut drive assembly; 65. Lateral drive motor; 66. Lateral lead screw; 67. Lateral nut, etc. However, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A dual-turret horizontal turning and milling machine tool, comprising a bed (1), characterized in that, The upper middle part of the bed (1) is provided with a horizontally arranged central spindle device (2). The central spindle device (2) has a braked electric spindle assembly (3). One end of the braked electric spindle assembly (3) is connected to a chuck body (31) for clamping the workpiece, and the other end is provided with a chuck clamping drive assembly (32). The upper sides of the bed (1) are respectively horizontally movably provided with power turret devices (4), and the central spindle device (2) is located between the two power turret devices (4). The power turret device (4) is equipped with a turning assembly, a milling assembly, and a drilling and milling assembly. The power turret device (4) and the bed (1) are provided with a turret longitudinal movement drive device (5) that can drive the power turret device (4) to move horizontally in a direction parallel to the central spindle device (2), and a turret transverse movement drive device (6) that can drive the power turret device (4) to move horizontally in a direction close to or away from the central spindle device (2).

2. The dual-turret horizontal turning and milling composite machine tool according to claim 1, characterized in that, The upper end of the bed (1) is provided with a chip removal groove (11), and the chuck body (31) and the power turret device (4) are both located above the chip removal groove (11), and the chip removal groove (11) has inclined chip guiding surfaces (12) on both sides.

3. The dual-turret horizontal turning and milling composite machine tool according to claim 1, characterized in that, The upper middle part of the bed (1) is provided with a spindle mounting column (13) that is integrated with the bed (1), and the central spindle device (2) is located on the upper end of the spindle mounting column (13).

4. A dual-turret horizontal turning and milling composite machine tool according to claim 3, characterized in that, The central spindle device (2) includes a spindle box (21) located at the upper end of the spindle mounting column (13), the electric spindle assembly (3) with brake is horizontally inserted into the spindle box (21), and the chuck clamping drive assembly (32) is a chuck drive cylinder (33) located at the end of the electric spindle assembly (3) away from the chuck body (31). The chuck body (31) is connected to the chuck drive cylinder (33) through a chuck pull rod inserted into the electric spindle assembly (3).

5. A dual-turret horizontal turning and milling machine tool according to claim 1, 2, 3, or 4, characterized in that, The power turret device (4) includes a turret body (41) and a turret drive mechanism (42). The turret body (41) has several tool mounting stations (43) on its outer circumference. A reverse tool holder (44) is installed on the tool mounting station (43), and the turning assembly, milling assembly and drilling and milling assembly are respectively arranged on the reverse tool holder (44).

6. A dual-turret horizontal turning and milling composite machine tool according to claim 3, characterized in that, The spindle mounting column (13) is provided with turret drive mounting bases (14) on both sides, and turret drive mounting parts (15) are provided on both sides of the turret drive mounting bases (14), and a turret drive mounting groove (16) is provided between the two turret drive mounting parts (15).

7. A dual-turret horizontal turning and milling composite machine tool according to claim 6, characterized in that, The turret lateral movement drive device (6) includes a lateral linear rail (61) set on the upper end of the turret drive mounting part (15), a lateral slide (62) is provided on the upper end of the turret drive mounting base (14), a plurality of lateral sliders (63) corresponding to the lateral linear rail (61) are provided on the lower end of the lateral slide (62), and a lateral screw nut drive assembly (64) connected to the lateral slide (62) is provided in the turret drive mounting groove (16).

8. A dual-turret horizontal turning and milling composite machine tool according to claim 6, characterized in that, The transverse lead screw and nut drive assembly (64) includes a transverse drive motor (65) located on the outer side of the turret drive mounting slot (16) away from the spindle mounting column (13). The turret drive mounting slot (16) is provided with a transverse lead screw (66) connected to the transverse drive motor (65), and the lower end of the transverse slide (62) is connected to a transverse nut (67) connected to the transverse lead screw (66).

9. A dual-turret horizontal turning and milling composite machine tool according to claim 7, characterized in that, The turret longitudinal movement drive device (5) includes a longitudinal drive groove (51) disposed on the inner side of the upper end of the transverse slide (62). The transverse slide (62) has longitudinal rails (52) on both sides of the upper end. The transverse slide (62) has a longitudinal slide (53) at the upper end. The lower end of the longitudinal slide (53) has several longitudinal sliders (54) corresponding to the longitudinal rails (52). The longitudinal drive groove (51) is provided with a longitudinal screw nut drive assembly (55) connected to the longitudinal slide (53). The power turret device (4) is disposed on the upper end of the longitudinal slide (53).

10. A dual-turret horizontal turning and milling composite machine tool according to claim 9, characterized in that, The longitudinal lead screw and nut drive assembly (55) includes a longitudinal drive motor (56) disposed on the outer side of one end of the longitudinal drive groove (51), a longitudinal lead screw (57) connected to the longitudinal drive motor (56) is provided in the longitudinal drive groove (51), and a longitudinal nut (58) connected to the longitudinal lead screw (57) is connected to the lower end of the longitudinal slide (53).

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