A swing head rotating mechanism for numerical control boring and milling machine

Abstract

The utility model discloses an A swing head rotating mechanism for a numerical control boring and milling machine. The A swing head rotating mechanism comprises a Y-direction sliding base, a large gear, a small gear, a servo motor, a first coupler, a swing base, a second coupler, a worm, a worm gear, a main shaft and a braking vane. The main shaft is fixedly mounted on the swing seat, and the swing seat is mounted on the Y-direction sliding seat; a servo motor drives worms connected with two rigid couplings to rotate, the two worms transmit power to two worm wheels respectively, a cylindrical gear shaft is provided with a small gear, a Y-direction sliding seat is provided with a large gear, and the small gear is in meshing transmission on the large gear to drive a swing seat to rotate on the Y-direction sliding seat, so that a main shaft swings; when the main shaft rotates to a command position, the hydraulic locking brake plate acts to lock the swing seat at a fixed position, and the main shaft can perform heavy cutting on a workpiece. According to the horizontal boring machine tool, complex workpieces can be machined through horizontal boring, the machining range of the machine tool is widened, one-time clamping of the workpieces is achieved, and one-time machining of multiple working procedures is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment, specifically relating to an A-swivel head rotation mechanism for CNC boring and milling machines, which can be used for the processing and manufacturing of special parts with high machining accuracy requirements. Background Technology

[0002] Currently, the most common type of mechanism on the market is a hydraulically driven linkage mechanism, which allows the spindle to rotate at a certain angle. This structure is simple, low-cost, and easy to manufacture, but it also has obvious drawbacks: low precision, which cannot meet the high positioning accuracy requirements of CNC machine tools. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides an A-type tilting head rotation mechanism for CNC boring and milling machines, which can broaden the processing application range of CNC boring and milling machines, realize the workpiece clamping at one time, and complete the milling, drilling, tapping and other processes of inclined surfaces with a certain angle, eliminate the limitations of boring and milling machine processing, and meet the one-time processing requirements of machine tools for multi-process and complex processes.

[0004] Technical solution: An A-axis sway head rotation mechanism for a CNC boring and milling machine, comprising a Y-axis slide, a large gear, a small gear, a servo motor, a first coupling, a sway head, a second coupling, a worm gear, a worm wheel, a spindle, and a brake plate;

[0005] The spindle is fixedly mounted on a swing base, which is mounted on a Y-axis slide. A servo motor is fixedly mounted on one end of the swing base, and the servo motor is connected to a first coupling. A worm gear is connected between the first and second couplings, and another worm gear is connected after the second coupling. The servo motor drives the two worm gears connected by rigid couplings to rotate, and the two worm gears transmit power to two worm wheels respectively. The two worm wheels are fixedly mounted on two cylindrical gear shafts of the Y-axis slide. Two small gears are provided on the cylindrical gear shafts. The mechanical backlash is eliminated by adjusting the angle of the two small gears. A large gear is provided on the Y-axis slide, and the two small gears mesh with the large gear to drive the swing base to rotate on the Y-axis slide, thereby allowing the spindle to swing. When the spindle rotates to the commanded position, the hydraulic locking brake plate is activated to lock the swing base in a fixed position, and the spindle can then perform heavy-duty cutting of the workpiece.

[0006] As an optimization: the spindle can swing within the range of -45° to +20°.

[0007] As an optimization, an angular contact ball bearing is also installed in the middle of the worm gear. The angular contact ball bearing is used to increase the support point and reduce deflection.

[0008] As an optimization: a plastic-coated surface is provided between the swing seat and the Y-shaped slide, and the overall rigidity of the swing seat is increased by lubrication with thin oil.

[0009] As an optimization: a pressure plate is provided between the swing base and the spindle, and the pressure plate locks and eliminates the gap to meet the heavy cutting requirements of the machine tool.

[0010] As an optimization: the brake plate is disposed between the pad plate and the oil circuit plate, the brake plate is provided with a piston and a guide rod, and the guide rod is provided with a disc spring.

[0011] As an optimization, a circular grating is provided between the swing base and the Y-shaped slide to increase rotational accuracy.

[0012] Beneficial effects: This invention enables the horizontal boring machine to process complex workpieces with a small increase in cost, thus expanding the processing range of the machine tool and achieving multiple processes in a single clamping operation. The invention features a stable and reliable structure, low failure rate, high operating accuracy, and facilitates equipment operation and subsequent maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the swing base structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the main shaft structure of this utility model. Detailed Implementation

[0016] Example

[0017] like Figure 1-3 As shown, an A-axis swivel rotation mechanism for a CNC boring and milling machine includes: a Y-axis slide 1, a large gear 2, a small gear, a servo motor 3, a first coupling 4, a swivel base 5, an angular contact ball bearing 6, a second coupling 7, a worm gear 8, a worm wheel 9, a pressure plate 10, a spindle 11, a brake plate 12, a piston 13, a guide rod 14, a disc spring 15, an oil circuit plate 16, and a pad 17.

[0018] The main shaft 11 is fixedly mounted on the swing seat 5, which is mounted on the Y-axis slide 1. A servo motor 3 is fixedly mounted on one end of the swing seat 5. The servo motor 3 is connected to the first coupling 4. A worm gear 8 is connected between the first coupling 4 and the second coupling 7. Another worm gear 8 is connected after the second coupling 7. An angular contact ball bearing 6 is installed in the middle of the worm gear 8 to increase the support point and reduce deflection. This A-axis oscillating mechanism drives the two worm gears 8 connected by two rigid couplings to rotate through the servo motor 3. The worm gears 8 transmit power to two worm wheels 9. The two worm wheels 9 are fixedly mounted on two cylindrical gear shafts of the Y-axis slide 1. Two small gears are provided on the cylindrical gear shafts. The mechanical backlash is eliminated by adjusting the angle of the two small gears. A large gear 2 is provided on the Y-axis slide 1. The two small gears mesh with the large gear 2, driving the swing seat 5 to rotate on the Y-axis slide 1, thereby allowing the main shaft 11 to oscillate within the range of -45° to +20°. When the spindle 11 rotates to the commanded position, the hydraulic locking brake plate 12 is activated, locking the swing seat 5 in a fixed position, and the spindle 11 can then perform heavy cutting of the workpiece.

[0019] In this embodiment, a brake plate 12 is provided between the pad 17 and the oil circuit plate 16. A piston 13 and a guide rod 14 are provided on the brake plate 12, and a disc spring 15 is provided on the guide rod 14.

[0020] In this embodiment, a plastic-coated surface is provided between the swing seat 5 and the Y-shaped slide 1, and the overall rigidity of the swing seat is increased by lubrication with thin oil.

[0021] In this embodiment, a pressure plate 10 is provided between the swing base 5 and the spindle 11. The pressure plate 10 locks and eliminates the gap, thus meeting the heavy cutting requirements of the machine tool.

[0022] In this embodiment, a circular grating is provided between the swing base 5 and the Y-shaped slide 1 to increase rotational accuracy.

[0023] This invention enables horizontal boring machines to process complex workpieces with a small increase in cost, thus expanding the processing range of the machine tool and allowing for multiple processes to be completed in a single setup. The invention features a stable and reliable structure, low failure rate, high operating accuracy, and facilitates operation and subsequent maintenance.

[0024] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A rotating A-head mechanism for a CNC boring and milling machine, characterized in that: It includes a Y-axis slide (1), a large gear (2), a small gear, a servo motor (3), a first coupling (4), a swing seat (5), a second coupling (7), a worm (8), a worm wheel (9), a main shaft (11), and a brake plate (12); The main shaft (11) is fixedly mounted on the swing seat (5), which is mounted on the Y-axis slide (1). A servo motor (3) is fixedly mounted on one end of the swing seat (5). The servo motor (3) is connected to the first coupling (4). A worm gear (8) is connected between the first coupling (4) and the second coupling (7). Another worm gear (8) is connected after the second coupling (7). The servo motor (3) drives the two worm gears (8) connected by the rigid couplings to rotate. The two worm gears (8) transmit power to two worm wheels (9) respectively. A worm gear (9) is fixedly installed on two cylindrical gear shafts of the Y-axis slide (1). Two small gears are provided on the cylindrical gear shafts. The mechanical backlash is eliminated by adjusting the angle of the two small gears. A large gear (2) is provided on the Y-axis slide (1). The two small gears mesh on the large gear (2) to drive the swing seat (5) to rotate on the Y-axis slide (1), thereby allowing the main shaft (11) to swing. When the main shaft (11) rotates to the command position, the hydraulic locking brake plate (12) is activated to lock the swing seat (5) in a fixed position, and the main shaft (11) can then perform heavy cutting of the workpiece.

2. The A-swing head rotating mechanism for CNC boring and milling machine according to claim 1, characterized in that: The main shaft (11) can swing within the range of -45° to +20°.

3. The A-swing head rotating mechanism for CNC boring and milling machine according to claim 1, characterized in that: An angular contact ball bearing (6) is also installed in the middle of the worm (8). The angular contact ball bearing (6) is used to increase the support point and reduce deflection.

4. The A-swing head rotating mechanism for CNC boring and milling machine according to claim 1, characterized in that: The swing seat (5) and the Y-shaped slide (1) are provided with a plastic-coated surface for contact, and the overall rigidity of the swing seat is increased by lubrication with thin oil.

5. The A-type tilting head rotation mechanism for CNC boring and milling machines according to claim 1, characterized in that: A pressure plate (10) is provided between the swing base (5) and the spindle (11). The pressure plate (10) locks and eliminates the gap, thus meeting the heavy cutting requirements of the machine tool.

6. The A-swing head rotating mechanism for CNC boring and milling machine according to claim 1, characterized in that: The brake plate (12) is disposed between the pad plate (17) and the oil circuit plate (16). The brake plate (12) is provided with a piston (13) and a guide rod (14). The guide rod (14) is provided with a disc spring (15).

7. The A-swing head rotating mechanism for CNC boring and milling machine according to claim 1, characterized in that: A circular grating is provided between the swing base (5) and the Y-shaped slide (1) to increase the rotation accuracy.

Images