Main shaft synchronizing mechanism of four-shaft vertical machining center

Abstract

The utility model relates to the technical field of center spindles, in particular to a four-axis vertical machining center spindle synchronizing mechanism which comprises a bottom plate, a stand column and a workbench are fixedly arranged on the bottom plate, a fixing frame is arranged on one side of the stand column in a sliding mode, a plurality of spindle boxes are arranged in the fixing frame in a sliding mode, and spindles are arranged in the spindle boxes in a rotating mode. The positions of the spindle boxes in the fixing frame are flexibly adjusted according to different machining requirements so as to adapt to machining of stamping die accessories of different types or sizes, each spindle is fixedly connected with a large gear, every two adjacent spindle boxes are communicated with each other, a small gear is arranged between every two adjacent spindle boxes in a sliding mode, and the large gear and the small gear are meshed with each other. The small gear is meshed with the two adjacent large gears, the small gear can adapt to position changes of the large gears on the two adjacent spindles through the springs arranged on the two sides of the connecting rod, and when the position of the spindle box is adjusted, it can be guaranteed that the small gear is in a good meshing state with the large gears on the two sides all the time under the elastic force action of the springs.

Description

Technical Field

[0001] This utility model relates to the field of spindle technology, and in particular to a spindle synchronization mechanism for a four-axis vertical machining center. Background Technology

[0002] With the rapid development of the manufacturing industry, enterprises' demand for efficient and automated processing equipment is increasing year by year. High-speed, high-efficiency multi-spindle machining centers have become one of the main development directions of machine tool technology today. As a representative of this type, the four-axis vertical machining center uses a single motor to drive multiple axes to rotate, enabling the simultaneous processing of multiple parts, thereby greatly improving production efficiency.

[0003] The machining process for stamping die parts demands extremely high precision, efficiency, and stability. Traditional machining methods often suffer from low precision, low efficiency, and poor stability, failing to meet the needs of modern manufacturing. However, the spindle synchronization mechanism of a four-axis vertical machining center effectively solves these problems.

[0004] In situations where the spindle position needs to be adjusted to accommodate different types or sizes of workpieces, the synchronous transmission structure becomes complex and difficult to adjust. Therefore, a spindle synchronization mechanism for four-axis vertical machining centers is provided. Utility Model Content

[0005] The main purpose of this utility model is to provide a spindle synchronization mechanism for a four-axis vertical machining center, so as to solve the problem in the related technology that the synchronous transmission structure is complex and difficult to adjust when the spindle position needs to be adjusted to adapt to different types or sizes of workpieces.

[0006] To achieve the above objectives, according to one aspect of the present invention, a spindle synchronization mechanism for a four-axis vertical machining center is provided, comprising a base plate, on which a column and a worktable are fixedly mounted, a fixed frame is slidably mounted on one side of the column, and a plurality of spindle boxes are slidably mounted inside the fixed frame, each spindle box having a rotatable spindle, each spindle having a large gear fixedly connected to it, two adjacent spindle boxes being interconnected, and a small gear being slidably mounted between two adjacent spindle boxes, the small gear meshing with two adjacent large gears.

[0007] Furthermore, each spindle is fixedly connected to a support ring, and each spindle box has an annular groove on its top, with one end of the support ring rotatably installed in the annular groove.

[0008] Furthermore, heat sinks are fixedly installed at the four corners of the inner wall of the spindle box, and a screw is rotatably connected to the side wall of the spindle box. One end of the screw passes through the side wall of the fixing frame and is threadedly connected to it.

[0009] Furthermore, a mounting base is slidably disposed between two adjacent spindle boxes. A groove is provided in the mounting base, and a connecting rod is slidably disposed in the groove. Springs are symmetrically connected to the side walls of the connecting rods, and the other end of the springs is fixedly connected to the inner wall of the groove.

[0010] Furthermore, the connecting rod passes through the pinion, and the pinion is rotatably mounted on the connecting rod.

[0011] Furthermore, a fixing rod is fixedly connected to the bottom of the mounting base, and a nut is threaded onto the fixing rod.

[0012] Furthermore, the fixing frame has several slots through it, the two ends of the main shaft are slidably installed in the slots, the bottom of the fixing frame has several sliding grooves, and the fixing rod is slidably installed in the sliding grooves.

[0013] Furthermore, heat sinks are fixedly installed at the four corners of the inner wall of the spindle box, and a screw is rotatably connected to the side wall of the spindle box. One end of the screw passes through the side wall of the fixing frame and is threadedly connected to it.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the spindle synchronization mechanism of this four-axis vertical machining center, a floating adjustment mechanism is set up with a pinion connected to a spring. Through the springs set on both sides of the connecting rod, the pinion can adapt to the position changes of the large gears on the two adjacent spindles. When the position of the spindle box is adjusted, the pinion can ensure that it always maintains a good meshing state with the large gears on both sides under the elastic force of the spring.

[0016] 2. In the spindle synchronization mechanism of this four-axis vertical machining center, the spindle box is slidably installed in the fixed frame. By rotating the screw, the position of the spindle box in the fixed frame can be easily adjusted, so that the spindle box can be flexibly adjusted according to different processing requirements to adapt to the processing of stamping die parts of different types or sizes. Attached image description:

[0017] Figure 1 This is a schematic diagram of the overall structure of the spindle synchronization mechanism of a four-axis vertical machining center in a preferred embodiment of the present invention.

[0018] Figure 2 This is one of the schematic diagrams of the internal overall structure of the fixing frame in a preferred embodiment of this utility model;

[0019] Figure 3 This is the second schematic diagram of the overall internal structure of the fixing frame in a preferred embodiment of this utility model;

[0020] Figure 4 This is a top view of the overall internal structure of the spindle box in a preferred embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the overall internal structure of the spindle box in a preferred embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the overall structure for mounting the pinion in a preferred embodiment of the present invention;

[0023] Figure 7 This is a schematic cross-sectional view of the mounting base in a preferred embodiment of the present invention.

[0024] Illustration:

[0025] 1. Base plate; 11. Column; 12. Workbench; 2. Fixing frame; 21. Groove; 22. Slide groove;

[0026] 3. Spindle box; 31. Annular groove; 32. Pinion; 33. Mounting base; 331. Groove; 332. Connecting rod; 333. Spring; 334. Fixing rod; 335. Nut; 34. Heat sink; 35. Screw; 4. Spindle; 41. Support ring; 42. Large gear. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] Please see Figures 1-7 As shown, the purpose of this embodiment is to provide a spindle synchronization mechanism for a four-axis vertical machining center, including a base plate 1, on which a column 11 and a worktable 12 are fixedly mounted. A fixed frame 2 is slidably mounted on one side of the column 11. Several spindle boxes 3 are slidably mounted inside the fixed frame 2. A spindle 4 is rotatably mounted inside each spindle box 3. A large gear 42 is fixedly connected to each spindle 4. Two adjacent spindle boxes 3 are interconnected, and a small gear 32 is slidably mounted between two adjacent spindle boxes 3. The small gear 32 meshes with two adjacent large gears 42.

[0029] Each spindle 4 is fixedly connected to a support ring 41. Each spindle box 3 has an annular groove 31 on its top. One end of the support ring 41 is rotatably installed in the annular groove 31. The support ring 41 allows the spindle 4 to rotate freely in the spindle box 3 while remaining stable and not falling off. The lower end of the spindle 4 is connected to a drill bit, milling cutter, grinding wheel, and turning tool, respectively, for processing stamping die parts to meet different processing needs.

[0030] The worktable 12 is used to place the stamping die parts to be processed, and a cross slide is fixedly installed on the base plate 1. The worktable 12 is mounted on the cross slide, which is a two-dimensional moving platform, usually composed of linear guides and drive mechanisms in the X and Y axes, providing the worktable 12 with the ability to move in the X and Y axes, thus easily adapting to various processing layouts and workpiece sizes. The fixed frame 2 slides on the column 11 and slides up and down through connecting ropes on both sides to bring the processing tool at one end of the spindle 4 closer to process the stamping die parts.

[0031] Heat sinks 34 are fixedly installed at the four corners of the inner wall of the spindle box 3. The purpose of the heat sinks 34 is to increase the heat dissipation area of ​​the inner wall of the spindle box 3, so as to more effectively dissipate the heat generated by the spindle 4 when it rotates at high speed. A screw 35 is rotatably connected to the side wall of the spindle box 3. One end of the screw 35 passes through the side wall of the fixing frame 2 and is threaded to it. When it is necessary to adjust the position of the spindle box 3, its position in the fixing frame 2 can be changed by rotating the screw 35. The movement of the screw 35 will push or pull the spindle box 3, making it slide in the fixing frame 2, thereby adjusting the position of the spindle 4 for different processing to adapt to the processing needs of stamping die parts of different types or sizes.

[0032] A mounting base 33 is slidably disposed between two adjacent spindle boxes 3. A groove 331 is provided in the mounting base 33. A connecting rod 332 is slidably disposed in the groove 331. A spring 333 is symmetrically connected to the side wall of the connecting rod 332. The other end of the spring 333 is fixedly connected to the inner wall of the groove 331.

[0033] The connecting rod 332 passes through the pinion 32, and the pinion 32 is rotatably mounted on the connecting rod 332.

[0034] A fixing rod 334 is fixedly connected to the bottom of the mounting base 33, and a nut 335 is threaded onto the fixing rod 334. A power source is fixedly connected to one of the main shafts 4, preferably a micro motor. The motor output shaft is fixedly connected to the center of the main shaft 4 to drive the main shaft 4 to rotate, and the large gear 42 rotates accordingly. Since the large gear 42 meshes with the small gear 32, the small gear 32 also rotates, driving the large gear 42 on the adjacent main shaft 4 to rotate synchronously. Therefore, all the main shafts 4 can rotate synchronously.

[0035] The fixed frame 2 has several slots 21 through it, and the two ends of the main shaft 4 are slidably installed in the slots 21. The bottom of the fixed frame 2 has several sliding grooves 22, and the fixed rod 334 is slidably installed in the sliding grooves 22.

[0036] like Figure 5As shown, the positions of the pinions 32 are arranged in parallel on each spindle 4. When the position of a spindle housing 3 needs to be adjusted by sliding, the large gear 42 on it may separate from the pinion 32. To ensure the synchronous movement of the spindles 4, the sliding fixing rod 334 can be used to move the mounting base 33, which in turn moves the pinion 32. During the movement, the pinion 32 first approaches and meshes with the large gear 42 on one spindle 4. Then, as the pinion 32 continues to move forward, the connecting rod 332 will slide towards the groove 331 under the action of the spring 333, causing the pinion 32 to approach the large gear 42 on the other spindle 4, until the pinion 32 meshes with both large gears 42. Then, the nut 335 is tightened to fix the position of the mounting base 33.

[0037] Furthermore, due to the springs 333 on both sides of the connecting rod 332, the pinion 32 can maintain a stable state, ensuring that it always maintains a good meshing state with the large gears 42 on both sides, thus avoiding transmission errors and noise caused by poor meshing.

[0038] Therefore, even if the position of the spindle box 3 changes, the pinion 32 can still maintain its meshing with the large gear 42, thereby achieving synchronous movement of the spindle 4.

[0039] In practical use, according to processing requirements, the position of the spindle box 3 in the fixed frame 2 is adjusted by rotating the screw 35. After sliding the spindle box 3 to the required position, the fixed rod 334 is slid to move the mounting base 33 and the small gear 32, causing the small gear 32 to approach and first mesh with the large gear 42 on one spindle 4. Continuing to slide the fixed rod 334, under the thrust of the large gear 42 and the elastic force of the spring 333, the connecting rod 332 will slide towards the groove 331, causing the small gear 32 to approach and mesh with the large gear 42 on the other spindle 4. After confirming that the small gear 32 has properly meshed with the large gears 42 on both sides, the nut is tightened. 335. With the fixed mounting base 33 in position, the stamping die part to be processed is placed on the worktable 12. According to the processing requirements, the position of the worktable 12 is adjusted by the cross slide to align the workpiece with the processing tool on the spindle 4. The power source is fixedly connected to one of the spindles 4, and the motor is started to drive the spindle 4 connected to it to rotate. Due to the meshing relationship between the large gear 42 and the small gear 32, the rotating spindle 4 will drive the small gear 32 to rotate, which in turn drives the large gear 42 on the adjacent spindle 4 to rotate synchronously, and finally realizes the synchronous rotation of all spindles 4. Finally, the fixed frame 2 is slid on the column 11 by the rope to process the stamping die part.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A four-axis vertical machining center spindle synchronization mechanism, comprising a base plate (1), wherein a column (11) and a worktable (12) are fixedly mounted on the base plate (1), characterized in that, A fixed frame (2) is slidably arranged on one side of the column (11). Several spindle boxes (3) are slidably arranged inside the fixed frame (2). A spindle (4) is rotatably arranged inside each spindle box (3). A large gear (42) is fixedly connected to each spindle (4). Two adjacent spindle boxes (3) are interconnected, and a small gear (32) is slidably arranged between two adjacent spindle boxes (3). The small gear (32) meshes with two adjacent large gears (42).

2. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 1, characterized in that, Each spindle (4) is fixedly connected with a support ring (41), and each spindle box (3) has an annular groove (31) on its top. One end of the support ring (41) is rotatably installed in the annular groove (31).

3. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 1, characterized in that, Heat sinks (34) are fixedly installed at the four corners of the inner wall of the spindle box (3). A screw (35) is rotatably connected to the side wall of the spindle box (3). One end of the screw (35) passes through the side wall of the fixing frame (2) and is threadedly connected to it.

4. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 1, characterized in that, A mounting base (33) is slidably disposed between two adjacent spindle boxes (3). A groove (331) is provided in the mounting base (33). A connecting rod (332) is slidably disposed in the groove (331). A spring (333) is symmetrically connected to the side wall of the connecting rod (332). The other end of the spring (333) is fixedly connected to the inner wall of the groove (331).

5. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 4, characterized in that, The connecting rod (332) passes through the pinion (32), and the pinion (32) is rotatably mounted on the connecting rod (332).

6. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 4, characterized in that, The mounting base (33) is fixedly connected to a fixing rod (334) at its bottom, and a nut (335) is threaded onto the fixing rod (334).

7. The spindle synchronization mechanism of the four-axis vertical machining center according to claim 6, characterized in that, The fixed frame (2) has several slots (21) through it, and the two ends of the main shaft (4) are slidably installed in the slots (21). The bottom of the fixed frame (2) has several sliding grooves (22), and the fixed rod (334) is slidably installed in the sliding grooves (22).

Images