Electro-hydraulic brake device for milling machine rotary table

Abstract

The utility model provides a kind of milling machine rotary table electro-hydraulic brake device, including mounting seat, rotary table assembly is rotatably connected in the mounting seat, worm is rotatably connected in the mounting seat, the outside of the mounting seat is provided with the drive motor that can drive worm rotation, the lower portion of rotary table assembly is provided with the worm wheel meshed with worm, the inside of rotary table assembly is provided with brake pad rotatably connected with mounting seat, the utility model has the advantages that: utilize external hydraulic component to push into hydraulic oil to hydraulic box by hydraulic pipe spare, hydraulic oil promotes piston push piece to move, piston push piece promotes brake pad to adhere to rotary table assembly, utilize the friction of two to brake rotary table assembly.Screw rod drives slider to move, slider drives brake clamping plate to adhere to rotary table assembly from outside, utilize the friction between two to brake rotary table assembly.Brake rotary table assembly from inside and outside, and braking effect is more outstanding.

Description

Technical Field

[0001] This utility model relates to the field of milling machine rotary table technology, and in particular to an electro-hydraulic brake device for a milling machine rotary table. Background Technology

[0002] As a core component of CNC machine tools, the milling machine rotary table significantly improves the machining efficiency and quality of complex parts through high-precision indexing and multi-axis linkage. By rotating the worktable, it can complete the machining of equal divisions (such as gear machining), unequal divisions (such as irregularly shaped parts), or continuous rotations (such as spiral grooves), thus expanding the machining range of the machine tool.

[0003] Traditional worm gear rotary tables use steel sleeves or discs for braking and positioning. Disc braking achieves torque by sacrificing radial space; under the same radial space conditions, disc braking produces less torque than steel sleeve braking. Therefore, when applying disc braking to small rotary tables, the braking torque is low and the braking accuracy is not high. Steel sleeve braking is simple in structure and has high braking positioning accuracy, but it suffers from high energy loss and requires very thin steel sleeve walls, making machining and adjustment difficult. To address these issues, an improved electro-hydraulic braking device for milling machine rotary tables is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide an electro-hydraulic brake device for a milling machine rotary table to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides an electro-hydraulic brake device for a milling machine rotary table, including a mounting base. A rotary table assembly is rotatably connected within the mounting base. A worm gear is rotatably connected within the mounting base. A drive motor capable of rotating the worm gear is disposed on the outer side of the mounting base. A worm wheel meshing with the worm gear is disposed at the lower part of the rotary table assembly. A brake pad rotatably connected to the mounting base is disposed on the inner side of the rotary table assembly. A hydraulic box is disposed at one end of the brake pad within the mounting base. A piston push block is disposed within the hydraulic box. A hydraulic pipe extending to the outer side of the mounting base is connected to one side of the hydraulic box. A lead screw is rotatably connected within the mounting base. A slider is threaded onto the lead screw. A brake motor capable of rotating the lead screw is disposed on the outer side of the mounting base. A brake clamp is fixedly connected to the slider.

[0007] Preferably, in any of the above embodiments, the mounting base is fixedly connected to both sides of the mounting base, and the rotating platform assembly includes a rotating column disposed in the mounting base and a platform fixedly connected to the top of the rotating column.

[0008] The above technical solution provides a mounting platform for the rotary table assembly. Fixing plates are provided on both sides of the mounting base, facilitating its fixation on the milling machine. The rotary table assembly provides a platform for placing the product to be processed. Specifically, the rotating column follows the drive assembly, causing the table plate to rotate, and the table plate provides a platform for placing the product to be processed.

[0009] Preferably, in any of the above solutions, a reduction gear is provided between the output shaft of the drive motor and the worm gear, and a reduction gear is provided between the output shaft of the brake motor and the lead screw.

[0010] The above technical solution involves starting the drive motor, which drives the worm gear to rotate. The worm gear, through a worm wheel, drives the rotary table assembly to rotate, which in turn rotates the product to be processed on the rotary table assembly, facilitating machining operations with the milling machine. A reduction gear is installed between the drive motor and the worm gear to enable the drive motor to drive the rotary table assembly to rotate more stably.

[0011] Preferably, any of the above solutions includes two brake pads, with a tension spring between the two brake pads, and the brake pads employ an arc-shaped mechanism.

[0012] The above technical solution utilizes an external hydraulic assembly to push hydraulic oil into the hydraulic box through hydraulic pipes. The hydraulic oil drives a piston pusher, which in turn pushes brake pads against the rotary table assembly. The friction between the two brake pads brakes the rotary table assembly from both sides, resulting in a larger contact area and better braking effect.

[0013] Preferably, as described in any of the above schemes, the outer side of the brake pad and the inner side of the rotating column of the rotating platform assembly are both provided with rough surfaces.

[0014] The above technical solution involves setting a rough surface on the outer side of the brake pad, which, together with the rough surface inside the rotating column, increases the friction between the brake pad and the rotating platform assembly, making braking more stable.

[0015] Preferably, the lead screw has two symmetrically arranged threads in opposite directions, and there are two sliders symmetrically arranged on the lead screw.

[0016] The above technical solution involves starting the brake motor, which drives the lead screw to rotate. The lead screw then moves the slider, which in turn moves the brake clamp against the rotary table assembly from the outside. The friction between the two brake clamps brakes the rotary table assembly. Two sets of sliders and brake clamps can brake the rotary table assembly from both sides, resulting in superior braking performance. Furthermore, the control switch for the brake motor can be integrated with the switch supplying hydraulic oil to the hydraulic components, enabling synchronized control of both electric and hydraulic braking for greater ease of operation.

[0017] Preferably, in any of the above embodiments, a guide rod is provided on one side of the lead screw inside the mounting base, the slider is sleeved on the outside of the guide rod, and a friction plate with an arc-shaped structure is provided on the inner side of the brake clamp.

[0018] The above technical solution involves: a guide rod on one side of the lead screw to constrain the slider and prevent it from displacing in other directions; and a friction plate inside the brake clamp, which provides greater friction between the friction plate and the rotary table assembly, resulting in superior braking performance.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. This milling machine rotary table electro-hydraulic brake device, through the arrangement of brake pads, a hydraulic box, a piston pusher, hydraulic pipes, a lead screw, a brake motor, a slider, and a brake clamp, utilizes an external hydraulic component to push hydraulic oil into the hydraulic box via hydraulic pipes. The hydraulic oil pushes the piston pusher to move, and the piston pusher pushes the brake pads against the rotary table assembly, using friction to brake the rotary table assembly. Activating the brake motor rotates the lead screw, which in turn moves the slider, causing the slider to move the brake clamp to abut against the rotary table assembly from the outside, again using friction to brake the rotary table assembly. Braking the rotary table assembly from both the inside and outside provides a more effective braking effect.

[0021] 2. The electro-hydraulic brake device of this milling machine rotary table features two brake pads that brake the rotary table assembly from both sides, resulting in a larger contact area and better braking effect. The outer surface of the brake pads is roughened, working in conjunction with the roughened surface inside the rotating column to increase the friction between the brake pads and the rotary table assembly, making braking more stable. A friction plate is installed on the inner side of the brake clamp, further enhancing the friction between the friction plate and the rotary table assembly, resulting in superior braking performance.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a first-view structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 4 For the present utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0028] In the diagram: 1-Mounting base, 2-Rotating table assembly, 3-Worm gear, 4-Drive motor, 5-Worm wheel, 6-Brake pad, 7-Tension spring, 8-Hydraulic box, 9-Piston push block, 10-Hydraulic fitting, 11-Lead screw, 12-Brake motor, 13-Slider, 14-Brake clamp. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1-4 As shown, this utility model includes a mounting base 1, a rotating platform assembly 2 rotatably connected inside the mounting base 1, a worm gear 3 rotatably connected inside the mounting base 1, a drive motor 4 capable of rotating the worm gear 3 is provided on the outer side of the mounting base 1, a worm wheel 5 meshing with the worm gear 3 is provided at the lower part of the rotating platform assembly 2, a brake pad 6 rotatably connected to the mounting base 1 is provided on the inner side of the rotating platform assembly 2, a hydraulic box 8 is provided at one end of the brake pad 6 inside the mounting base 1, a piston push block 9 is provided inside the hydraulic box 8, and a hydraulic pipe fitting 10 extending to the outer side of the mounting base 1 is connected to one side of the hydraulic box 8; a lead screw 11 rotatably connected inside the mounting base 1, a slider 13 threadedly connected to the lead screw 11, a brake motor 12 capable of rotating the lead screw 11 is provided on the outer side of the mounting base 1, and a brake clamp 14 is fixedly connected to the slider 13.

[0032] Example 1: Mounting base 1 has fixed plates on both sides. The rotary table assembly 2 includes a rotating column disposed within the mounting base 1 and a table plate fixedly connected to the top of the rotating column. The mounting base 1 provides a mounting platform for the rotary table assembly 2. Fixed plates on both sides of the mounting base 1 facilitate its fixation on the milling machine. The rotary table assembly 2 provides a platform for placing the product to be processed. The rotating column rotates following the drive assembly, causing the table plate to rotate, thus providing a platform for the product to be processed. A reduction gear is disposed between the output shaft of the drive motor 4 and the worm gear 3, and between the output shaft of the brake motor 12 and the lead screw 11. When the drive motor 4 is started, it drives the worm gear 3 to rotate. The worm gear 3, through the worm wheel 5, drives the rotary table assembly 2 to rotate, thereby rotating the product to be processed on the rotary table assembly 2, cooperating with the milling machine for processing. The reduction gear between the drive motor 4 and the worm gear 3 allows the drive motor 4 to drive the rotary table assembly 2 to rotate more stably.

[0033] Example 2: There are two brake pads 6, with a tension spring 7 between them. The brake pads 6 adopt an arc-shaped mechanism. Hydraulic oil is pushed into the hydraulic box 8 through the hydraulic pipe 10 using an external hydraulic assembly. The hydraulic oil pushes the piston pusher 9 to move, and the piston pusher 9 pushes the brake pads 6 against the rotating platform assembly 2. The friction between the two brake pads brakes the rotating platform assembly 2. The two brake pads 6 can brake the rotating platform assembly 2 from both sides, resulting in a larger contact area and better braking effect. Both the outer side of the brake pads 6 and the inner side of the rotating column of the rotating platform assembly 2 are provided with rough surfaces. The rough surface on the outer side of the brake pads 6, combined with the rough surface inside the rotating column, increases the friction between the brake pads and the rotating platform assembly 2, making the braking more stable.

[0034] Example 3: Two symmetrically arranged threads in opposite directions are formed on the lead screw 11. Two sliders 13 are symmetrically arranged on the lead screw 11. Starting the brake motor 12 drives the lead screw 11 to rotate, which in turn moves the sliders 13. The sliders 13 then move the brake clamps 14 to abut against the rotating platform assembly 2 from the outside, using the friction between them to brake the rotating platform assembly 2. The two sets of sliders 13 and brake clamps 14 can brake the rotating platform assembly 2 from both sides, resulting in a more effective braking effect. The control switch of the brake motor 12 can be combined with the switch supplying hydraulic oil to the hydraulic pipe 10, thus achieving synchronous control of electric and hydraulic braking, making operation more convenient. A guide rod is provided on one side of the lead screw 11 within the mounting base 1. The slider 13 is sleeved on the outside of this guide rod, and an arc-shaped friction plate is provided on the inner side of the brake clamps 14. The guide rod on one side of the lead screw 11 constrains the slider 13, preventing it from displacing in other directions. A friction plate is provided on the inner side of the brake clamp 14, which has greater friction with the rotating platform assembly 2, resulting in a better braking effect.

[0035] The working principle of this utility model is as follows:

[0036] S1. Start the drive motor 4. The drive motor 4 drives the worm 3 to rotate. The worm 3 drives the rotary table assembly 2 to rotate through the worm gear 5, which in turn drives the product to be processed on the rotary table assembly 2 to rotate, and cooperates with the milling machine to perform processing work.

[0037] S2. Hydraulic oil is pushed into the hydraulic box 8 through the hydraulic pipe 10 using an external hydraulic component. The hydraulic oil pushes the piston push block 9 to move. The piston push block 9 pushes the brake pad 6 to abut against the rotating table assembly 2. The friction between the two is used to brake the rotating table assembly 2.

[0038] S3. Start the brake motor 12 to drive the lead screw 11 to rotate. The lead screw 11 drives the slider 13 to move. The slider 13 drives the brake clamp 14 to come into contact with the rotating table assembly 2 from the outside, and uses the friction between the two to brake the rotating table assembly 2.

[0039] Compared with the prior art, the present invention has the following advantages:

[0040] 1. This milling machine rotary table electro-hydraulic brake device, through the arrangement of brake pads 6, a hydraulic box 8, a piston pusher 9, hydraulic pipes 10, a lead screw 11, a brake motor 12, a slider 13, and a brake clamp 14, utilizes an external hydraulic component to push hydraulic oil into the hydraulic box 8 through the hydraulic pipes 10. The hydraulic oil pushes the piston pusher 9 to move, and the piston pusher 9 pushes the brake pads 6 to press against the rotary table assembly 2, using the friction between the two to brake the rotary table assembly 2. Activating the brake motor 12 drives the lead screw 11 to rotate, which in turn drives the slider 13 to move. The slider 13 then moves the brake clamp 14 to press against the rotary table assembly 2 from the outside, using the friction between the two to brake the rotary table assembly 2. Braking the rotary table assembly 2 from both the inside and outside provides a more effective braking effect.

[0041] 2. The electro-hydraulic brake device of this milling machine rotary table has two brake pads 6 that can brake the rotary table assembly 2 from both sides, resulting in a larger contact area and better braking effect. The outer side of the brake pads 6 is roughened, which, in conjunction with the roughened surface inside the rotating column, increases the friction between the brake pads and the rotary table assembly 2, making braking more stable. A friction plate is provided on the inner side of the brake clamp 14, providing even greater friction between the friction plate and the rotary table assembly 2, further enhancing the braking effect.

Claims

1. A milling machine rotary table electro-hydraulic brake device, comprising a mounting base (1), a rotary table assembly (2) rotatably connected within the mounting base (1), a worm gear (3) rotatably connected within the mounting base (1), a drive motor (4) capable of rotating the worm gear (3) is provided on the outer side of the mounting base (1), and a worm wheel (5) meshing with the worm gear (3) is provided at the lower part of the rotary table assembly (2); characterized in that, The inner side of the rotating table assembly (2) is provided with a brake pad (6) rotatably connected to the mounting base (1). A hydraulic box (8) is provided at one end of the brake pad (6) in the mounting base (1). A piston push block (9) is provided in the hydraulic box (8). A hydraulic pipe (10) extending to the outside of the mounting base (1) is connected to one side of the hydraulic box (8). The mounting base (1) is rotatably connected to a lead screw (11), and a slider (13) is threaded onto the lead screw (11). A brake motor (12) that can drive the lead screw (11) to rotate is provided on the outside of the mounting base (1), and a brake clamp (14) is fixedly connected to the slider (13).

2. The electro-hydraulic brake device for a milling machine rotary table as described in claim 1, characterized in that: The mounting base (1) is fixedly connected to two fixed plates on both sides, and the rotating table assembly (2) includes a rotating column disposed in the mounting base (1) and a table plate fixedly connected to the top of the rotating column.

3. The electro-hydraulic brake device for a milling machine rotary table as described in claim 2, characterized in that: A speed reduction assembly is provided between the output shaft of the drive motor (4) and the worm (3), and a speed reduction assembly is provided between the output shaft of the brake motor (12) and the lead screw (11).

4. The electro-hydraulic brake device for a milling machine rotary table as described in claim 3, characterized in that: There are two brake pads (6), and a tension spring (7) is provided between the two brake pads (6). The brake pads (6) adopt an arc-shaped mechanism.

5. The electro-hydraulic brake device for a milling machine rotary table as described in claim 4, characterized in that: The outer side of the brake pad (6) and the inner side of the rotating column of the rotating platform assembly (2) are both provided with rough surfaces.

6. The electro-hydraulic brake device for a milling machine rotary table as described in claim 5, characterized in that: The lead screw (11) has two symmetrically arranged threads in opposite directions, and there are two sliders (13) symmetrically arranged on the lead screw (11).

7. The electro-hydraulic brake device for a milling machine rotary table as described in claim 6, characterized in that: The mounting base (1) has a guide rod inside the lead screw (11) on one side, the slider (13) is sleeved on the outside of the guide rod, and the brake clamp (14) has a friction plate with an arc-shaped structure on the inside.

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