Rotary table for turning and milling composite machine tool

Abstract

The utility model discloses a rotary table for a turning and milling composite machine tool, which is characterized in that the rotary table is arranged on a machine tool body of the machine tool, a cover plate is fixed with a workbench through a positioning flange plate and then is arranged above the rotary table, and a bottom cover plate is fixedly arranged below a rotary table body to form a frame of the rotary table; the mandrel is fixed with the outer ring of the bearing and the rotor flange through screws and then mounted on the rotary table body; the stator flange is mounted below the workbench, and the torque motor and the stator flange are fixed and then mounted on the rotary table body; the angle encoder is mounted on the rotary table body through an encoder support; the oil cup is upwards connected to the bearing through the first oil way and downwards connected to the lubricating oil outlet through the second oil way, and the lubricating oil outlet is provided with a screw plug for cleaning. According to the five-axis milling machine, high-precision five-axis milling machining can be met, and high-speed cutting machining can also be achieved; cutting fluid and dust can be prevented from damaging a motor and a bearing in the rotary table; and the channel can be prevented from being blocked after grease is dried.

Description

Technical Field

[0001] This utility model relates to a rotary table, and more particularly to a rotary table for a turning and milling machine tool, belonging to the field of machinery. Background Technology

[0002] As an important functional component of a five-axis machining center, the quality of the rotary table's functional structure has a significant impact on the overall performance of the machine tool.

[0003] Currently, the rotary tables used in five-axis machining centers are classified according to their feed mechanisms as worm gear drive, gear drive, and direct torque motor drive, and according to their functions as five-axis milling and turning centers. When a five-axis machining center processes a part, it generally requires turning and milling steps to shape the part. During turning, the rotary table rotates at high speed, causing the product to rotate, while the cutting tool does not rotate. During milling, the cutting tool rotates, while the rotary table rotates at low speed or does not rotate at all.

[0004] The application number is 2023107543493, and the application name is "A High-Efficiency Turning-Milling Composite Machining Center". It discloses a turning-milling composite machining center that can process two parts simultaneously through the set dual channels of the machine tool. The dual channels can also process the same ultra-large part at the same time. Although this machining center realizes the integration of turning and milling, the structure of the machining center is relatively complex, which increases the processing cost.

[0005] The invention patent with application number 2023114828242 and application name "Horizontal Five-Axis Machining Center" discloses a five-axis machining center that solves the problem of low machining efficiency when machining large-sized workpieces. However, the five-axis machining center has unreliable table fixation when switching between turning and milling, and cannot solve the problem of reliable switching between turning and milling. Summary of the Invention

[0006] This utility model addresses the shortcomings of existing technologies by providing a rotary table for a milling and turning machine tool, which can meet both high-precision five-axis milling and high-speed cutting needs.

[0007] This type of milling and turning machine tool uses a rotary table. The rotary table is mounted on the machine tool bed. The cover plate is fixed to the worktable via a positioning flange and then mounted on top of the rotary table. The bottom cover plate is fixed to the bottom of the rotary table body, together forming the frame of the rotary table. A pneumatic clamp for holding the positioning flange is fixed to the rotary table body. The spindle is fixed to the outer ring of the bearing and the rotor flange via screws and then mounted on the rotary table body. The stator flange is mounted below the worktable. The torque motor is fixed to the stator flange and then mounted on the rotary table body. The angle encoder is mounted on the rotary table body via an encoder support. The oil cup is connected to the bearing through oil line one and to the lubricating oil outlet through oil line two. The lubricating oil outlet is equipped with a cleaning plug.

[0008] In a further optimization, a rotary sealing ring is installed between the worktable and the stator flange, and the rotary sealing ring is press-fitted between the worktable and the stator flange by a sealing ring pressure plate.

[0009] To further optimize the design, an oil baffle is installed on the outside of the torque motor.

[0010] In a further optimization, the inner ring of the angle encoder is fixed to the positioning flange with screws, and the outer ring of the angle encoder is fixed to the encoder support with screws.

[0011] In a further optimization, the inner ring of the bearing is fixed to the turntable body with screws, the outer ring of the bearing is fixed together with the spindle, and the spindle is connected to the rotor flange and the torque motor rotor of the torque motor. The torque motor stator is fixedly connected to the stator flange.

[0012] The advantages of this utility model are: it can meet the requirements of high-precision five-axis milling and high-speed cutting; the rotary sealing ring can prevent cutting fluid and dust from damaging the internal motor and bearings of the turntable; the turntable comes with a grease cleaning device to prevent the grease from drying out and clogging the channels. Attached Figure Description

[0013] Figure 1 This is a sectional view of the structure of the rotary table used in a milling and turning machine.

[0014] The markings in the diagram are: 1-cover plate; 2-positioning flange; 3-pneumatic clamp; 4-angle encoder; 5-spindle; 6-bearing; 7-rotor flange; 8-encoder support; 9-cleaning plug; 10-bottom cover plate; 11-worktable; 12-sealing ring pressure plate; 13-rotary sealing ring; 14-stator flange; 15-torque motor stator; 16-torque motor rotor; 17-oil baffle; 18-turntable body; 19-oil cup. Detailed Implementation

[0015] The rotary table for milling and turning machines will be further explained below with reference to the accompanying drawings.

[0016] like Figure 1 As shown, this rotary table for a milling and turning machine tool includes a cover plate 1, a positioning flange 2, a pneumatic clamp 3, an angle encoder 4, a spindle 5, a bearing 6, a rotor flange 7, an encoder support 8, a cleaning plug 9, a bottom cover plate 10, a worktable 11, a sealing ring pressure plate 12, a rotary sealing ring 13, a stator flange 14, a torque motor stator 15, a torque motor rotor 16, an oil baffle 17, a rotary table body 18, an oil cup 19, and a cleaning plug 9.

[0017] The inner ring of bearing 6 is fixed to the turntable body 18 with screws. Cover plate 1, positioning flange 2, worktable 11, and spindle 5 are connected to the outer ring of bearing 6, rotor flange 7, and torque motor rotor 16 with screws. Sealing ring pressure plate 12, stator flange 14, torque motor stator 15, bottom cover plate 10, and encoder support 8 are fixed to the turntable body 18 with screws. Pneumatic clamp 3 is fixed to the turntable body 18 with screws. The inner ring of angle encoder 4 is fixed to positioning flange 2 with screws. The outer ring of angle encoder 4 is fixed to encoder support 8 with screws. Rotary sealing ring 13 is installed on stator flange 14 and pressed by sealing ring pressure plate 12. When the machine tool needs to rotate the turntable, pneumatic clamp 3 releases positioning flange 2, causing worktable 11 to be in an open state. Torque motor rotor 16 then rotates cover plate 1, positioning flange 2, worktable 11, spindle 5, outer ring of bearing 6, and rotor flange 7 together. An angle encoder 4 is used to measure the rotation angle and number of revolutions. A rotary seal ring 13 is used to seal between the rotating and stationary parts, preventing cutting fluid and dust from damaging the internal motor and bearings of the turntable. When the turntable does not need to rotate, the pneumatic clamp 3 clamps the positioning flange 2, locking the worktable 11 and fixing the rotating part. The oil cup is connected upwards to the bearing via oil passage one and downwards to the lubricating oil outlet via oil passage two. The lubricating oil outlet is equipped with a cleaning plug. After prolonged rotation, the bearing 6 needs additional lubricating grease. Grease is injected into the bearing through the oil cup 19 and oil passage one within the turntable body 18. Some grease from oil passage two and excess grease overflowing from the bearing are controlled within the oil baffle 17. Excess grease is cleaned by removing the cleaning plug 9. The cleaning plug 9 is used to clean the grease in the injection end, preventing the grease in its channel from drying out and clogging the channel.

[0018] The above describes specific embodiments of this utility model and the technical principles used. Any modifications or equivalent transformations based on the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary table for a turning-milling compound machine tool, the rotary table being installed on a bed of the machine tool, a cover plate being installed above the rotary table after being fixed with a worktable through a positioning flange, and a bottom cover plate being fixedly installed below a rotary table body, together constituting a frame of the rotary table, characterized in that: The pneumatic clamp for clamping the positioning flange is fixed on the rotary table body, the mandrel is fixed on the rotary table body through the screw and the outer ring of the bearing and the rotor flange, the stator flange is installed below the workbench, the torque motor is installed on the rotary table body after being fixed with the stator flange, the angle encoder is installed on the rotary table body through the encoder support, the oil cup is connected to the bearing through oil passage one upwardly and connected to the lubricating oil outlet downwardly through oil passage two, and the lubricating oil outlet is provided with a screw plug for cleaning.

2. A turntable for a turn-milling machine according to claim 1, characterized in that: The rotary sealing ring is arranged between the workbench and the stator flange and is pressed between the workbench and the stator flange through the sealing ring pressing plate.

3. The turntable for a turn-milling machine according to claim 1, characterized in that: The oil baffle is arranged outside the torque motor.

4. The turntable for a turn-milling machine according to claim 1, characterized in that: The inner ring of the angle encoder is fixed with the positioning flange through the screw, and the outer ring of the angle encoder is fixed with the encoder support through the screw.

5. The turntable for a turn-milling machine tool according to claim 1, characterized in that: The inner ring of the bearing is fixed on the rotary table body through the screw, the outer ring of the bearing is fixed with the mandrel, the mandrel is connected with the rotor flange and the torque motor rotor of the torque motor, and the torque motor stator of the torque motor is fixedly connected with the stator flange.

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