Driving mechanism of numerical control machining center

Abstract

The invention provides a numerical control machining center driving mechanism, which relates to the field of numerical control equipment and is characterized in that a first driving nut is rotationally connected to the bottom of a transverse plate of a sliding carriage, and the first driving nut and a first lead screw jointly form a lead screw nut transmission mechanism; the second driving nut is rotationally connected to the rear of the vertical plate of the sliding carriage, and the second driving nut and the second lead screw jointly form a lead screw nut transmission mechanism; the transmission assembly is arranged on the inner side of the sliding carriage, and the driving motor drives the first driving nut and the second driving nut to rotate reversely at the same time through the transmission assembly. The angle adjusting assembly is arranged on the left side of the upper front end face of the beam. The multi-spindle driving mechanism achieves simultaneous machining of multiple spindles on the same cross beam, transmission is achieved through two lead screws, adjustment of reverse gaps can be achieved, the machining progress and use convenience are greatly improved, and the problem that an existing numerical control machine tool driving mechanism has fit gaps, and machining precision is affected is solved. And meanwhile, the problem that an existing driving mechanism can only support single-station machining is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control equipment, and particularly relates to a driving mechanism of a numerical control machining center. Background Art

[0002] Numerical control machining centers are widely used due to their high automation, high machining accuracy, and the ability to machine complex parts. The driving mechanism of a numerical control machining center mainly adopts a single lead screw transmission structure. A servo motor drives the ball screw to rotate, driving the nut pair and the carriage to move linearly along the guide rail.

[0003] For example, application number: CN200810016818.7. The present invention belongs to the technical field of machine tools, and particularly relates to a numerical control turning and milling machine for turning and milling multi-sided shaft parts, bevel gear parts, and spiral bevel gear parts. Its characteristics are: the movable carriage device includes a large carriage that can move linearly along the longitudinal direction of the bed and a small carriage that can move linearly along the transverse direction of the bed; the large carriage is located on the linear guide on the bed, and the small carriage is located on the linear guide provided on the large carriage; an electronic tool post and a milling tool post are provided on the small carriage; the cutter head rotating shaft of the milling tool post is synchronously connected to the output shaft of the gear transmission box; multiple turning tools are provided on the cutter head of the electronic tool post, and multiple milling cutters can be evenly arranged on the cutter head of the milling tool post according to the need of milling a square. It has the advantages of compact structure, low manufacturing cost, simple operation, high efficiency, combining milling functions, automatically completing the processing of grooves, squares, curved surfaces, spherical surfaces, and spiral multi-sided bodies of shaft parts, as well as bevel gear parts and spiral bevel gear parts, and realizing automation of processing procedures, high machining accuracy, accurate indexing, and low production cost.

[0004] There is a clearance between the ball screw and the nut pair of the existing driving mechanism of a numerical control machine tool, which causes an idle stroke during reverse movement, directly affecting the positioning accuracy, especially in precision machining. At the same time, the lead screw will wear after long-term use, resulting in an increasing reverse clearance. The clearance error can accumulate to more than 0.05 mm, affecting the machining accuracy. At the same time, the existing driving mechanism can only realize a single carriage, and the single-carriage structure can only support single-station machining, unable to meet the demand for synchronous multi-process machining of complex workpieces, and the equipment utilization rate is low. Summary of the Invention

[0005] The embodiments of the present disclosure relate to a driving mechanism of a numerical control machining center, which can realize simultaneous machining of multiple spindles on the same crossbeam, greatly improving the working efficiency. Through the transmission of two lead screws, it can not only ensure the smoothness of transmission but also realize the adjustment of reverse clearance, greatly improving the machining progress and usability.

[0006] In the first aspect of the present disclosure, a driving mechanism of a numerical control machining center is provided, specifically including: a crossbeam; A sliding carriage, multiple sliding carriages are provided, and the multiple sliding carriages are slidably connected to the upper part of the crossbeam; The first lead screw, the first lead screw is fixedly installed in the middle of the upper end face of the cross beam through a fixing component; The second lead screw, the second lead screw is installed in the middle of the front end face of the cross beam through a locking component, and the pitches of the second lead screw and the first lead screw are the same and the helix directions are opposite; The driving motor, the driving motor is fixedly installed on the top of the sliding carriage; The first driving nut, the first driving nut is rotatably connected to the bottom of the cross plate of the sliding carriage, and the first driving nut and the first lead screw together constitute a lead screw-nut transmission mechanism; The second driving nut, the second driving nut is rotatably connected behind the vertical plate of the sliding carriage, and the second driving nut and the second lead screw together constitute a lead screw-nut transmission mechanism; The transmission component, the transmission component is arranged inside the sliding carriage, and the driving motor drives the first driving nut and the second driving nut to rotate in opposite directions simultaneously through the transmission component; The angle adjustment component, the angle adjustment component is arranged on the left side of the upper front end face of the cross beam.

[0007] In at least some embodiments, the transmission component includes: The driving bevel gear, the driving bevel gear is rotatably connected inside the sliding carriage, and the driving bevel gear is coaxially and fixedly connected to the end of the rotating shaft of the driving motor; The driven bevel gear, the driven bevel gear is rotatably connected inside the sliding carriage, and the driven bevel gear meshes with the driving bevel gear to jointly form a bevel gear transmission mechanism.

[0008] In at least some embodiments, the transmission component further includes: The first worm, the first worm is coaxially and fixedly connected to the rear end face of the driven bevel gear; The first worm gear, the first worm gear is coaxially and fixedly connected to the outside of the first driving nut, and the first worm meshes with the first worm gear to jointly form a worm and worm gear transmission mechanism.

[0009] In at least some embodiments, the transmission component further includes: The second worm, the second worm is coaxially and fixedly connected to the bottom of the driving bevel gear; The second worm gear, the second worm gear is coaxially and fixedly connected to the outside of the second driving nut, and the second worm meshes with the second worm gear to jointly form a worm and worm gear transmission mechanism.

[0010] In at least some embodiments, the fixing component includes: The lead screw support blocks, the lead screw support blocks are fixedly connected to the left and right sides of the upper end face of the cross beam; The lead screw pressing blocks, the lead screw pressing blocks are fixedly connected to the tops of the lead screw support blocks through bolts. A square hole is provided in the middle of the contact surface between the lead screw support block and the lead screw pressing block. The left and right ends of the first lead screw are first square shafts, and the first square shafts are installed in the square holes, and the lead screw support block and the lead screw pressing block press the first square shafts tightly; The lead screw baffle is fastened to the outer end faces of the lead screw support block and the lead screw pressing block by bolts.

[0011] In at least some embodiments, the locking assembly includes: The left support seat is fixedly connected to the left side of the front end face of the cross beam; The left locking pressure plate is locked to the left end face of the left support seat by bolts; The angle adjusting end cover has a square hole in the middle. The outer edge of the angle adjusting end cover is the left friction disc. The left locking pressure plate presses the left friction disc against the left side of the left support seat; The left side of the second lead screw is rotatably connected to the left support seat. The two end portions of the second lead screw are second square shafts, and the left second square shaft is inserted and matched with the square hole in the middle of the angle adjusting end cover.

[0012] In at least some embodiments, the locking assembly further includes: The right support seat is fixedly connected to the right side of the front end face of the cross beam. The right side of the second lead screw is rotatably connected to the right support seat; The right locking pressure plate is fastened and locked to the right end face of the right support seat by bolts; The right locking end cover has a square hole in the middle. The outside of the right locking end cover is the right friction disc. The right locking pressure plate presses the right friction disc against the right side of the right support seat. The right second square shaft is inserted and connected to the square hole in the middle of the right locking end cover.

[0013] In at least some embodiments, the angle adjusting assembly includes: The angle adjusting bolt is rotatably connected to the front left side of the cross beam; The angle adjusting slider is slidably connected to the front left side of the cross beam. The angle adjusting bolt and the angle adjusting slider are threadedly connected to form a threaded transmission pair.

[0014] In at least some embodiments, the angle adjusting assembly further includes: The angle adjusting connecting rod has one end hingedly connected to the front part of the angle adjusting slider, and the other end hingedly connected to the front part of the angle adjusting end cover. The angle adjusting slider, the angle adjusting connecting rod, the angle adjusting end cover and the cross beam together form a crank-slider transmission mechanism.

[0015] The present invention provides a driving mechanism for a numerically controlled machining center, which has the following beneficial effects: The present invention uses a fixedly installed lead screw and a nut with a rotating structure to drive the carriage. The same lead screw can drive multiple carriages to work simultaneously, enabling multiple different spindles to be installed on the same crossbeam. Different spindles can perform different machining tasks according to machining requirements. For example, some spindles are responsible for milling, some for drilling, and some for grinding, etc. In the past, to complete a workpiece containing multiple machining processes, it might be necessary to transfer the workpiece between different machine tools multiple times, which not only wasted time but also easily generated clamping errors. Now, multiple different spindles can machine the workpiece simultaneously, greatly shortening the machining cycle and improving the machining efficiency.

[0016] The present invention simultaneously sets two lead screws with the same pitch to drive the same carriage. In the traditional single lead screw drive mode, the carriage is prone to being affected by various factors during movement, such as wear of the lead screw and uneven load, resulting in unstable transmission and thus affecting machining accuracy. However, the coordinated drive of two lead screws can better share the load, better maintain balance and stability; the forces received by the carriage during movement are more uniform, reducing vibrations and deviations caused by uneven forces, effectively ensuring transmission stability, and significantly improving machining accuracy, which can meet the requirements of various high-precision machining.

[0017] The present invention sets the two lead screws to have opposite helix directions. When it is necessary to adjust the backlash, only the rotation angle of one set of lead screws needs to be adjusted. Since the two lead screws have opposite helix directions, adjusting the rotation angle of one set of lead screws will change the action of the two lead screws on the nut, thereby achieving precise adjustment of the backlash. This adjustment method is simple and direct, can quickly and effectively eliminate the influence of backlash on machining, and improve machining accuracy.

[0018] The present invention uses the method of rotating the lead screw to compensate for the axial backlash, and at the same time cleverly utilizes the crank-slider structure and the screw drive structure. Since the lead screw, crank-slider structure, screw drive and other methods are all speed-reducing transmissions, a very small backlash can be amplified into a larger rotation angle of the adjusting bolt. This amplification effect also significantly improves the adjustment accuracy.

[0019] In summary, the present invention can achieve simultaneous machining of multiple spindles on the same crossbeam, greatly improving work efficiency. By using two lead screws for transmission, it can not only ensure transmission stability but also achieve adjustment of backlash, greatly improving machining progress and usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0022] In the accompanying drawings: Figure 1 A schematic diagram of the overall structure of the present application is shown; Figure 2 A schematic diagram of the structure of the present application in the state where the sliding carriage is removed is shown; Figure 3 A schematic diagram of the exploded structure of the angle adjustment assembly of the present application is shown; Figure 4 A schematic diagram of the exploded structure of the right locking assembly of the present application is shown; Figure 5 A schematic diagram of the exploded structure of the right locking end cover and the right locking pressure plate of the present application is shown; Figure 6 A schematic diagram of the exploded structure of the fixing assembly of the present application is shown; Figure 7 A schematic diagram of the bottom structure of the sliding carriage of the present application is shown; Figure 8 A schematic diagram of the structures of the first lead screw and the second lead screw of the present application is shown; Figure 9 A schematic diagram of the structure of the transmission assembly of the present application is shown; List of reference numerals 1, cross beam; 101, left support seat; 102, right support seat; 2, first lead screw; 201, first square shaft; 3, second lead screw; 301, second square shaft; 4, sliding carriage; 5, drive motor; 6, driving bevel gear; 601, second worm; 7, driven bevel gear; 701, first worm; 8, first driving nut; 801, first worm gear; 9, second driving nut; 901, second worm gear; 10, angle adjusting bolt; 11, angle adjusting slider; 12, angle adjusting connecting rod; 13, angle adjusting end cover; 1301, left friction disc; 14, left locking pressure plate; 15, right locking pressure plate; 16, right locking end cover; 1601, right friction disc; 17, lead screw support block; 18, lead screw pressing block; 19, lead screw baffle plate. Detailed implementation manners

[0023] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: Please refer to Figures 1 to 9 : The present invention provides a driving mechanism for a numerical control machining center, comprising: a cross beam 1; A sliding carriage 4, with multiple sliding carriages 4 provided. The multiple sliding carriages 4 are slidably connected to the upper part of the cross beam 1; A first lead screw 2, which is fixedly installed in the middle of the upper end face of the cross beam 1 through a fixing component; A second lead screw 3, which is installed in the middle of the front end face of the cross beam 1 through a locking component. The pitch of the second lead screw 3 is the same as that of the first lead screw 2, but the helix directions are opposite; A driving motor 5, which is fixedly installed on the top of the sliding carriage 4; A first driving nut 8, which is rotatably connected to the bottom of the cross plate of the sliding carriage 4. The first driving nut 8 and the first lead screw 2 together form a lead screw-nut transmission mechanism; A second driving nut 9, which is rotatably connected to the rear of the vertical plate of the sliding carriage 4. The second driving nut 9 and the second lead screw 3 together form a lead screw-nut transmission mechanism; A transmission component, which is arranged inside the sliding carriage 4. The driving motor 5 drives the first driving nut 8 and the second driving nut 9 to rotate in opposite directions simultaneously through the transmission component; In the embodiment of the present disclosure, as Figure 2 and Figure 9 shown, the transmission component includes: A driving bevel gear 6, which is rotatably connected inside the sliding carriage 4. The driving bevel gear 6 is coaxially and fixedly connected to the end of the rotating shaft of the driving motor 5; A driven bevel gear 7, which is rotatably connected inside the sliding carriage 4. The driven bevel gear 7 meshes with the driving bevel gear 6 to form a bevel gear transmission mechanism together. During use, the driving motor 5 drives the driven bevel gear 7 to rotate through the bevel gear transmission mechanism formed by the driven bevel gear 7 and the driving bevel gear 6.

[0025] In the embodiment of the present disclosure, as Figure 2 and Figure 9 shown, the transmission component further includes: A first worm 701, which is coaxially and fixedly connected to the rear end face of the driven bevel gear 7; A first worm gear 801, which is coaxially and fixedly connected to the outside of the first driving nut 8. The first worm 701 meshes with the first worm gear 801 to form a worm and worm gear transmission mechanism together. During use, when the driven bevel gear 7 rotates, the driven bevel gear 7 drives the first driving nut 8 to rotate through the worm and worm gear transmission mechanism formed by the first worm 701 and the first worm gear 801.

[0026] In the embodiment of the present disclosure, as Figure 2 and Figure 9 shown, the transmission component further includes: The second worm 601 is coaxially and fixedly connected to the bottom of the driving bevel gear 6; The second worm gear 901 is coaxially and fixedly connected to the outside of the second driving nut 9. The second worm 601 and the second worm gear 901 are meshed to form a worm and worm gear transmission mechanism. In use, when the driving bevel gear 6 rotates, the driving bevel gear 6 drives the second driving nut 9 to rotate through the worm and worm gear transmission mechanism composed of the second worm 601 and the second worm gear 901. Through the rotation of the second driving nut 9 and the first driving nut 8, the lead screw transmission mechanism drives the sliding carriage 4 to slide left and right, realizing left and right feeding.

[0027] In the embodiment of the present disclosure, as Figure 6 shown, the fixing assembly includes: The lead screw support block 17 is fixedly connected to the left and right sides of the upper end surface of the cross beam 1; The lead screw pressing block 18 is fixedly connected to the top of the lead screw support block 17 through bolts. A square hole is provided in the middle of the contact surface between the lead screw support block 17 and the lead screw pressing block 18. The left and right ends of the first lead screw 2 are first square shafts 201, and the first square shafts 201 are installed in the square holes. The lead screw support block 17 and the lead screw pressing block 18 press the first square shafts 201; The lead screw baffle 19 is fixedly connected to the outer end surfaces of the lead screw support block 17 and the lead screw pressing block 18 through bolts. In use, the lead screw support block 17 and the lead screw pressing block 18 are used to lock the first lead screw 2, realizing the fastening connection of the first lead screw 2. The lead screw baffle 19 presses the two ends of the first lead screw 2, and at the same time, the left and right positions of the first lead screw 2 can be finely adjusted during the installation stage.

[0028] In the embodiment of the present disclosure, as Figure 3 shown, the locking assembly includes: The left support seat 101 is fixedly connected to the left side of the front end surface of the cross beam 1; The left locking pressing plate 14 is locked to the left end surface of the left support seat 101 through bolts; The angle adjusting end cover 13 is provided with a square hole in the middle. The outer edge of the angle adjusting end cover 13 is the left friction disk 1301. The left locking pressing plate 14 presses the left friction disk 1301 against the left side of the left support seat 101; the left side of the second lead screw 3 is rotatably connected to the left support seat 101. The two end portions of the second lead screw 3 are second square shafts 301, and the left second square shaft 301 is inserted and matched in the square hole in the middle of the angle adjusting end cover 13. In use, the left locking pressing plate 14 presses the left friction disk 1301 to fix the angle of the second lead screw 3, effectively preventing the second lead screw 3 from rotating.

[0029] In the embodiment of the present disclosure, asFigure 4 and Figure 5 As shown, the locking assembly further includes: The right support base 102 is fixedly connected to the right side of the front end face of the cross beam 1, and the right side of the second lead screw 3 is rotatably connected to the right support base 102; The right locking pressure plate 15 is fastened and locked to the right end face of the left support base 101 by bolts; The right locking end cover 16 is provided with a square hole in the middle. The outer side of the right locking end cover 16 is the right friction disc 1601. The right locking pressure plate 15 presses the right friction disc 1601 against the right side of the right support base 102. The second square shaft 301 on the right side is inserted into the square hole in the middle of the right locking end cover 16. During use, the right locking pressure plate 15 presses the right friction disc 1601 against the right side of the right support base 102 to realize the rotational locking of the second lead screw 3.

[0030] Embodiment 2: Please refer to Figure 3 : The present invention provides a driving mechanism for a numerical control machining center, including: The angle adjustment assembly is arranged on the left side of the upper front end face of the cross beam 1.

[0031] In the embodiment of the present disclosure, as Figure 3 shown, the angle adjustment assembly includes: The angle adjustment bolt 10 is rotatably connected to the front left part of the cross beam 1; The angle adjustment slider 11 is slidably connected to the front left part of the cross beam 1. The angle adjustment bolt 10 is threadedly connected to the angle adjustment slider 11 to jointly form a screw transmission pair. During use, when the angle adjustment bolt 10 is rotated, the angle adjustment bolt 10 drives the angle adjustment slider 11 to slide up and down through the screw transmission pair formed by the angle adjustment bolt 10 and the angle adjustment slider 11.

[0032] In the embodiment of the present disclosure, as Figure 3 shown, the angle adjustment assembly further includes: The angle adjustment connecting rod 12, one end of the angle adjustment connecting rod 12 is hinged to the front part of the angle adjustment slider 11, and the other end of the angle adjustment connecting rod 12 is hinged to the front part of the angle adjustment end cover 13. The angle adjustment slider 11, the angle adjustment connecting rod 12, the angle adjustment end cover 13 and the cross beam 1 jointly form a crank-slider transmission mechanism. During use, when the angle adjustment slider 11 slides up and down, the angle adjustment slider 11 drives the angle adjustment end cover 13 to rotate through the crank-slider transmission mechanism jointly formed by the angle adjustment slider 11, the angle adjustment connecting rod 12, the angle adjustment end cover 13 and the cross beam 1, so as to adjust the installation angle of the second lead screw 3, and further adjust the backlash.

[0033] The working principle of this embodiment: During the CNC machining process, the driving motor 5 drives the driven bevel gear 7 to rotate through a bevel gear transmission mechanism composed of the driven bevel gear 7 and the driving bevel gear 6. The driven bevel gear 7 drives the first driving nut 8 to rotate through a worm and worm gear transmission mechanism composed of the first worm 701 and the first worm gear 801. The driving bevel gear 6 drives the second driving nut 9 to rotate through a worm and worm gear transmission mechanism composed of the second worm 601 and the second worm gear 901. Through the rotation of the second driving nut 9 and the first driving nut 8, the lead screw transmission mechanism is used to drive the sliding carriage 4 to slide left and right, realizing left and right feeding. By setting two sets of lead screw nut structures to drive the carriage, the force on the carriage is more uniform and the transmission is smoother. At the same time, multiple carriage movements can be realized simultaneously, and each carriage can move according to needs, and there will be no interference in the transmission between the carriages.

[0034] When reverse clearance compensation is required, loosen the bolts on the left locking pressing plate 14 and the right locking pressing plate 15 a little, and then rotate the angle adjusting bolt 10. The angle adjusting bolt 10 drives the angle adjusting slider 11 to slide up and down through a screw thread transmission pair composed of the angle adjusting bolt 10 and the angle adjusting slider 11. The angle adjusting slider 11 drives the angle adjusting end cover 13 to rotate through a crank-slider transmission mechanism composed of the angle adjusting slider 11, the angle adjusting connecting rod 12, the angle adjusting end cover 13 and the cross beam 1, so as to adjust the installation angle of the second lead screw 3, and further realize the adjustment of the reverse clearance.

[0035] In this article, the following points need attention: 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0036] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0037] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A driving mechanism for a numerically controlled machining center, characterized in that, Including: Cross beam (1); Sliding carriage (4), multiple pieces of the sliding carriage (4) are provided, and the multiple pieces of sliding carriage (4) are slidably connected to the upper part of the cross beam (1); First lead screw (2), the first lead screw (2) is fixedly installed in the middle of the upper end face of the cross beam (1) through a fixing component; Second lead screw (3), the second lead screw (3) is installed in the middle of the front end face of the cross beam (1) through a locking component, and the pitches of the second lead screw (3) and the first lead screw (2) are the same and the rotation directions are opposite; Drive motor (5), the drive motor (5) is fixedly installed on the top of the sliding carriage (4); First drive nut (8), the first drive nut (8) is rotatably connected to the bottom of the cross plate of the sliding carriage (4), and the first drive nut (8) and the first lead screw (2) together form a lead screw-nut transmission mechanism; Second drive nut (9), the second drive nut (9) is rotatably connected to the rear of the vertical plate of the sliding carriage (4), and the second drive nut (9) and the second lead screw (3) together form a lead screw-nut transmission mechanism; Transmission component, the transmission component is arranged inside the sliding carriage (4), and the drive motor (5) drives the first drive nut (8) and the second drive nut (9) to rotate in opposite directions simultaneously through the transmission component; Angle adjustment component, the angle adjustment component is arranged on the left side of the front end face of the upper part of the cross beam (1).

2. The driving mechanism of a numerical control machining center according to claim 1, wherein The transmission component includes: Active bevel gear (6), the active bevel gear (6) is rotatably connected inside the sliding carriage (4), and the active bevel gear (6) is coaxially and fixedly connected to the end of the rotating shaft of the drive motor (5); Driven bevel gear (7), the driven bevel gear (7) is rotatably connected inside the sliding carriage (4), and the driven bevel gear (7) and the active bevel gear (6) are meshed to form a bevel gear transmission mechanism together.

3. The driving mechanism of a numerical control machining center according to claim 2, wherein The transmission component further includes: First worm (701), the first worm (701) is coaxially and fixedly connected to the rear end face of the driven bevel gear (7); First worm wheel (801), the first worm wheel (801) is coaxially and fixedly connected to the outside of the first drive nut (8), and the first worm (701) and the first worm wheel (801) are meshed to form a worm and worm wheel transmission mechanism together.

4. The driving mechanism of a numerical control machining center according to claim 3, wherein The transmission component further includes: Second worm (601), the second worm (601) is coaxially and fixedly connected to the bottom of the active bevel gear (6); Second worm wheel (901), the second worm wheel (901) is coaxially and fixedly connected to the outside of the second drive nut (9), and the second worm (601) and the second worm wheel (901) are meshed to form a worm and worm wheel transmission mechanism together.

5. The driving mechanism of a numerical control machining center according to claim 1, wherein The fixing component includes: Lead screw support block (17), the lead screw support block (17) is fixedly connected to the left and right sides of the upper end face of the cross beam (1); Lead screw pressing block (18), the lead screw pressing block (18) is fixedly connected to the top of the lead screw support block (17) by bolts. A square hole is provided in the middle of the contact surface between the lead screw support block (17) and the lead screw pressing block (18). The left and right ends of the first lead screw (2) are first square shafts (201), and the first square shafts (201) are installed in the square hole. The lead screw support block (17) and the lead screw pressing block (18) press the first square shaft (201); Lead screw baffle (19), the lead screw baffle (19) is fixedly connected to the outer end surfaces of the lead screw support block (17) and the lead screw pressing block (18) by bolts.

6. The driving mechanism of a numerical control machining center according to claim 1, characterized in that, The locking assembly includes: Left support seat (101), the left support seat (101) is fixedly connected to the left side of the front end face of the cross beam (1); Left locking pressure plate (14), the left locking pressure plate (14) is locked to the left end face of the left support seat (101) by bolts; Angle adjusting end cover (13), a square hole is provided in the middle of the angle adjusting end cover (13). The outer edge of the angle adjusting end cover (13) is a left friction disc (1301). The left locking pressure plate (14) presses the left friction disc (1301) against the left side of the left support seat (101). The left side of the second lead screw (3) is rotatably connected to the left support seat (101). The two side ends of the second lead screw (3) are second square shafts (301), and the left second square shaft (301) is inserted and matched in the square hole in the middle of the angle adjusting end cover (13).

7. The driving mechanism of a numerical control machining center according to claim 6, characterized in that, The locking assembly further includes: Right support seat (102), the right support seat (102) is fixedly connected to the right side of the front end face of the cross beam (1), and the right side of the second lead screw (3) is rotatably connected to the right support seat (102); Right locking pressure plate (15), the right locking pressure plate (15) is fixedly locked to the right end face of the left support seat (101) by bolts; Right locking end cover (16), a square hole is provided in the middle of the right locking end cover (16). The outside of the right locking end cover (16) is a right friction disc (1601). The right locking pressure plate (15) presses the right friction disc (1601) against the right side of the right support seat (102). The right second square shaft (301) is inserted and connected to the square hole in the middle of the right locking end cover (16).

8. The driving mechanism of a numerical control machining center according to claim 6, characterized in that, The angle adjusting assembly includes: Angle adjusting bolt (10), the angle adjusting bolt (10) is rotatably connected to the front left part of the cross beam (1); Angle adjusting slider (11), the angle adjusting slider (11) is slidably connected to the front left part of the cross beam (1). The angle adjusting bolt (10) and the angle adjusting slider (11) are threadedly connected to form a screw drive pair.

9. The driving mechanism of a numerical control machining center according to claim 8, characterized in that, The angle adjusting assembly further includes: Angle-adjusting connecting rod (12), one end of the angle-adjusting connecting rod (12) is hingedly connected to the front part of the angle-adjusting slider (11), and the other end of the angle-adjusting connecting rod (12) is hingedly connected to the front part of the angle-adjusting end cover (13). A crank-slider transmission mechanism is jointly formed among the angle-adjusting slider (11), the angle-adjusting connecting rod (12), the angle-adjusting end cover (13) and the cross beam (1).

Images