Vertical grinding machine direct drive rotary table

Abstract

The utility model discloses a vertical grinding machine direct drive rotary table relates to vertical grinding machine technical field, the utility model discloses a rotary table body, the inside of rotary table body is provided with the moment motor, and the upper end surface of rotary table body outside is provided with the recess, and the inside position of recess is provided with the workstation, and the upper end surface bolt connection of workstation has the brake disc, and the position of being located brake disc just above is provided with passive pneumatic clamp, and passive pneumatic clamp is fixed on rotary table body. The utility model discloses the cooperation work of moment motor and passive pneumatic clamp, realizes the rotary motion of workstation relative rotary table body, adopts direct drive type moment motor direct drive workstation rotation, has big bearing, big torsion and high accuracy's characteristics, and after moment motor power failure, passive pneumatic clamp will directly control workstation stop rotating, avoids the excessive rotation of workstation.

Description

Technical Field

[0001] This utility model belongs to the field of vertical grinding machine technology, and in particular relates to a direct drive rotary table for a vertical grinding machine. Background Technology

[0002] Five-axis machining centers in the current technology have been widely used in modern military and aerospace industries. They are characterized by high speed, high precision, and complex machining, and can complete the surface machining of all parts in a single clamping operation to the greatest extent possible. However, the mechanical transmission of the worktable is complex, inefficient, and noisy. It also places high demands on the equipment for the machining, heat treatment, and assembly processes of the transmission components. Furthermore, it is prone to wear and difficult to maintain. Moreover, it has high requirements for electrical control technology, requiring the design concept of high-power, high-inertia servo motors to improve its dynamic response capability.

[0003] Due to its complex mechanical transmission structure, in actual operation, when used as a high-speed turning spindle, the milling transmission mechanism is first disengaged from the rotary table, while the turning transmission mechanism is connected, typically a low-reduction gearbox. A servo motor then drives the rotary table to rotate at high speed for turning operations. In this case, the rotary table can generally only rotate and cannot perform indexing or other operations. When used as a low-speed milling indexing rotary table, the turning transmission mechanism is first disengaged from the rotary table, and then connected through another milling reduction mechanism. A low-speed, high-torque servo motor drives the indexing or high-torque milling operations, resulting in low efficiency, easy wear, and poor rotary positioning accuracy. Therefore, we provide a direct-drive rotary table for vertical grinding machines to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a direct-drive rotary table for a vertical grinding machine. Through the cooperation of a torque motor and a passive pneumatic clamp, the worktable rotates relative to the rotary table body. The direct-drive torque motor drives the worktable to rotate, which has the characteristics of high load capacity, high torque and high precision. Furthermore, when the torque motor is powered off, the passive pneumatic clamp will directly control the worktable to stop rotating, thus avoiding excessive rotation of the worktable.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a direct drive rotary table for a vertical grinding machine, including a rotary table body; a torque motor is installed inside the rotary table body, and a notch is opened on the upper surface of the outer side of the rotary table body. A worktable is installed inside the notch, and a brake disc is bolted to the upper surface of the worktable. A passive pneumatic clamp is installed directly above the brake disc and is fixed on the rotary table body.

[0007] The present invention is further configured such that the torque motor is fixed on the inner side of the turntable body, and the shaft end of the torque motor is connected to the worktable by bolts.

[0008] The present invention is further configured such that an oil distributor is provided directly above the turntable body, and a housing connected to the upper end face of the turntable body is installed on the outer wall of the oil distributor by bolts.

[0009] The present invention is further configured such that an assembly chassis is fixed to the surface wall of the oil separator, and an oil separator transition body is bolted to the end face of the assembly chassis.

[0010] The present invention is further configured such that an angle encoder is provided inside the turntable body, and an encoding positioning shaft is rotatably provided on the inner side of the angle encoder.

[0011] The present invention is further configured such that the outer wall of the angle encoder is mounted on the turntable body by bolts, and the encoder positioning shaft is fixedly connected to the worktable by bolts.

[0012] This utility model has the following beneficial effects:

[0013] This invention utilizes a torque motor to directly drive the worktable to rotate relative to the turntable body. This large direct-drive CNC turntable employs a torque motor to directly drive the worktable. When the torque motor is powered, the rotor rotates relative to the stator, while the turntable body remains stationary relative to the stator. The worktable moves along with the torque motor rotor. When the torque motor is de-energized, a passive pneumatic clamp operates, with a cylinder on the clamp pushing it downwards to grip the brake disc, thus quickly stopping the worktable and achieving rotational movement relative to the turntable body. The use of a direct-drive torque motor to rotate the worktable offers advantages such as high load capacity, high torque, and high precision, while simplifying the mechanical structure. The torque motor also boasts an exceptionally long service life and extremely low wear, significantly saving energy and materials, and exhibiting high energy-saving and environmentally friendly performance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural diagram of the transfer platform, passive pneumatic clamp, and oil separator of this utility model.

[0017] Figure 3 This is a structural diagram of the transfer table, worktable, and angle encoder of this utility model.

[0018] Figure 4 This is a structural diagram of the oil separator in this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1-Turntable body, 101-Notch, 2-Worktable, 3-Brake disc, 4-Passive pneumatic clamp, 5-Angle encoder, 501-Encoding positioning shaft, 6-Torque motor, 7-Oil distributor, 701-Oil distributor transition body, 702-Assembly chassis, 703-Housing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] Please see Figures 1 to 4 This utility model is a direct-drive rotary table for a vertical grinding machine. Through the cooperation of a torque motor 6 and a passive pneumatic clamp 4, the worktable 2 rotates relative to the rotary table body 1. The direct-drive torque motor 6 directly drives the worktable 2 to rotate, which has the characteristics of high load capacity, high torque and high precision. Furthermore, when the torque motor 6 is de-energized, the passive pneumatic clamp 4 will directly control the worktable 2 to stop rotating, thus avoiding excessive rotation of the worktable 2.

[0023] Specifically, the turntable body 1 has a torque motor 6 installed inside it. A notch 101 is opened on the upper surface of the turntable body 1. A worktable 2 is installed inside the notch 101. A brake disc 3 is bolted to the upper surface of the worktable 2. A passive pneumatic clamp 4 is installed directly above the brake disc 3. The passive pneumatic clamp 4 is fixed on the turntable body 1. The torque motor 6 is fixed on the inner side of the turntable body 1. The shaft end of the torque motor 6 is connected to the worktable 2 by bolts.

[0024] The operation process of this embodiment is as follows: The torque motor 6 includes a torque motor 6 stator and a torque motor 6 rotor. The turntable body 1 is fixedly connected to the torque motor 6 stator, and the worktable 2 is fixedly connected to the torque motor 6 rotor. The torque motor 6 powers and directly drives the worktable 2 to rotate relative to the turntable body 1. This large direct-drive CNC turntable uses the torque motor 6 to directly drive the worktable 2. When the torque motor 6 is powered, the torque motor 6 rotor rotates relative to the torque motor 6 stator, while the turntable body 1 remains fixed relative to the torque motor 6 stator and does not move. The worktable 2 rotates accordingly. The torque electronic rotor moves together. When the torque motor 6 is de-energized, the passive pneumatic clamp 4 operates. The cylinder on the passive pneumatic clamp 4 pushes the clamp from top to bottom to clamp the brake disc 3, thereby quickly stopping the worktable 2 and realizing the rotational movement of the worktable 2 relative to the turntable body 1. The direct-drive torque motor 6 directly drives the worktable 2 to rotate, which has the characteristics of high load capacity, high torque and high precision, while simplifying the mechanical structure. The torque motor 6 has an ultra-long service life and extremely low wear, which greatly saves energy and materials and has high energy-saving and environmental protection performance. Example 2

[0025] Please see Figure 1 , Figure 2 and Figure 4 Based on Example 1, the use of the oil separator 7 can reduce friction between structures and ensure that multiple structures are not easily damaged.

[0026] Specifically, an oil distributor 7 is provided directly above the turntable body 1. The outer wall of the oil distributor 7 is bolted to a housing 703 connected to the upper end face of the turntable body 1. An assembly chassis 702 is fixed to the surface of the oil distributor 7. An oil distribution transition body 701 is bolted to the end face of the assembly chassis 702.

[0027] The operation process of this embodiment is as follows: With the above-mentioned structure, the oil outlet of the oil distributor 7 is set in the position of the turntable 1, the worktable 2 and the angle encoder 5 through the pipeline. Therefore, the oil in the oil distributor 7 will flow into the position between the turntable 1, the worktable 2 and the angle encoder 5. Thus, when the turntable 1, the worktable 2 and the angle encoder 5 rotate, the friction between the structures can be reduced, ensuring that multiple structures are not easily damaged. Example 3

[0028] Please see Figure 1 and Figure 3 Based on Example 1, the rotation angle of the worktable 2 is recorded when the worktable 2 rotates by the cooperation between the angle encoder 5, the turntable body 1, and the worktable 2.

[0029] Specifically, an angle encoder 5 is installed inside the turntable body 1. An encoding positioning shaft 501 is rotatably installed on the inner side of the angle encoder 5. The outer wall of the angle encoder 5 is installed on the turntable body 1 by bolts. The encoding positioning shaft 501 is fixedly connected to the worktable 2 by bolts.

[0030] The operation process of this embodiment is as follows: With the above structure, when the worktable 2 rotates rapidly, the worktable 2 will drive the encoding positioning shaft 501 to rotate, thereby enabling the linkage between the encoding positioning shaft 501 and the angle encoder 5 to record the rotation angle of the worktable 2 when the worktable 2 rotates.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A vertical grinding machine direct drive rotary table, comprising a rotary table body (1); characterized in that: The turntable body (1) is equipped with a torque motor (6) inside. The upper surface of the turntable body (1) is provided with a notch (101). A worktable (2) is provided inside the notch (101). A brake disc (3) is bolted to the upper surface of the worktable (2). A passive pneumatic clamp (4) is provided directly above the brake disc (3) and is fixed on the turntable body (1).

2. A vertical grinding machine direct drive rotary table according to claim 1, characterized in that, The torque motor (6) is fixed on the inner side of the turntable body (1), and the shaft end of the torque motor (6) is connected to the worktable (2) by bolts.

3. A vertical grinding machine direct drive rotary table according to claim 1, characterized in that, An oil separator (7) is provided directly above the turntable (1), and a housing (703) connected to the upper end face of the turntable (1) is installed on the outer wall of the oil separator (7) by bolts.

4. A vertical grinding machine direct drive rotary table according to claim 3, characterized in that, The oil separator (7) has an assembly chassis (702) fixed to its surface wall, and the end face of the assembly chassis (702) is bolted to an oil separator transition body (701).

5. A vertical grinding machine direct drive rotary table according to claim 1, characterized in that, An angle encoder (5) is provided inside the turntable body (1), and an encoding positioning shaft (501) is rotatably provided on the inner side of the angle encoder (5).

6. A vertical grinding machine direct drive rotary table according to claim 5, characterized in that, The outer wall of the angle encoder (5) is mounted on the turntable body (1) by bolts, and the encoder positioning shaft (501) is fixedly connected to the worktable (2) by bolts.

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