Spindle structure of thread rolling machine

Abstract

The utility model discloses a main shaft structure of a thread rolling machine, and particularly relates to the technical field of thread rolling machine accessories, the main shaft structure comprises a worm, a servo motor and a worm wheel, the worm is arranged at one end of the servo motor, the worm wheel meshed with the worm is arranged on one side of the worm, a first coupler is arranged between the output end of the servo motor and the worm, and a second coupler is arranged between the output end of the servo motor and the worm. A supporting rod is installed on the turbine in a penetrating mode, and a ball screw is arranged at one end of the supporting rod. According to the utility model, the previous design is improved, two pairs of machine tools are arranged on one machine tool, and double-main-shaft transmission and precise feeding are realized; the servo motor transmits power to the worm through the key coupling, the worm transmits the power to the worm gear, and the worm gear transmits the power to the ball screw and the nut through double-spline hard connection, so that linear motion of the nut is achieved, torque of overall transmission is increased, and high-precision operation of the thread rolling machine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of accessories of a thread rolling machine, and more specifically, to the spindle structure of a thread rolling machine. Background Art

[0002] A thread rolling machine is a multi-functional cold extrusion forming machine tool. The thread rolling machine can perform thread rolling, straight thread rolling, and helical thread rolling on workpieces in a cold state within its rolling pressure range; rolling of straight teeth, helical teeth, and helical spline gears; straightening, necking, rolling, and various forming rolling. The machine has a safe and reliable electro-hydraulic execution and control system, and each working cycle can be selected in three modes: manual, semi-automatic, and automatic; at present, the main shaft drive and feed of the thread rolling machine on the market are both hydraulically controlled. This drive has a large torque but is difficult to control in terms of accuracy and cannot meet the accuracy requirements of current products. Therefore, it is necessary to develop a new type of spindle structure for a thread rolling machine. Content of the Utility Model

[0003] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a spindle structure of a thread rolling machine to solve the problems raised in the above-mentioned background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A spindle structure of a thread rolling machine, including a worm, a servo motor, and a turbine. One end of the servo motor is provided with a worm, and a meshing turbine is arranged on one side of the worm. Among them, a first coupling is arranged between the output end of the servo motor and the worm. A support rod is installed through the turbine, and a ball screw is arranged at one end of the support rod.

[0005] As a further improvement of the technical solution of the utility model, a second coupling is arranged between the support rod and the ball screw, and a nut adapted to the external thread of the ball screw is installed.

[0006] As a further improvement of the technical solution of the utility model, a support seat is arranged at the end of the support rod, and a movable bearing is arranged between the support rod and the support seat.

[0007] As a further improvement of the technical solution of the utility model, tapered roller bearings are arranged on both the worm and the ball screw.

[0008] As a further improvement of the technical solution of the utility model, the periphery of the nut is of a square structure for limiting the nut during the sliding process.

[0009] As a further improvement of the technical solution of the utility model, the servo motor is installed on the thread rolling machine through a motor support seat.

[0010] As a further improvement of the technical solution of the utility model, the worm is arranged along the X axis, and the screw rod is arranged along the Y axis.

[0011] Technical effects and advantages of the present utility model:

[0012] The present utility model improves the previous design. With two sets of structures for one machine tool, it realizes double-spindle drive and precise feed. The servo motor transmits power to the worm through a key coupling, the worm transmits power to the worm gear, and the worm gear transmits power to the ball screw and nut through a double-spline rigid connection, thereby realizing the linear motion of the nut, increasing the torque of the overall transmission, and achieving high-precision operation of the thread rolling machine. Description of the drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the worm and the ball screw in the present utility model.

[0015] Reference numerals in the drawings are: 1 worm, 2 servo motor, 3 worm gear, 4 first coupling, 5 support rod, 6 ball screw, 7 nut, 8 second coupling. Specific implementation manners

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] As shown in the attached Figure 1 and attached Figure 2 The thread rolling machine spindle structure shown includes a worm 1, a servo motor 2, a worm gear 3, a first coupling 4, a support rod 5, a ball screw 6, a nut 7, and a second coupling 8. It is characterized in that: a worm 1 is provided at one end of the servo motor 2, and a meshing worm gear 3 is provided on one side of the worm 1. Among them, a first coupling 4 is provided between the output end of the servo motor 2 and the worm 1. A support rod 5 is installed through the worm gear 3, and a ball screw 6 is provided at one end of the support rod 5.

[0018] A second coupling 8 is provided between the support rod 5 and the ball screw 6, and a nut 7 adapted to the external thread of the ball screw 6 is installed.

[0019] A support seat is provided at the end of the support rod 5, and a movable bearing is provided between the support rod 5 and the support seat.

[0020] Tapered roller bearings are provided on both the worm 1 and the ball screw 6.

[0021] The periphery of the nut 7 is of a square structure, which is used for limiting the nut 7 during the sliding process.

[0022] The servo motor 2 is installed on the thread rolling machine through a motor support seat, so as to drive the main shaft of the thread rolling machine through the servo motor for transmission.

[0023] The worm 1 is arranged in the X-axis direction, and the lead screw 6 is arranged in the Y-axis direction.

[0024] The working principle of the present utility model: It includes a worm 1, a servo motor 2, a turbine 3, a first coupling 4, a support rod 5, a ball screw 6, a nut 7, and a second coupling 8

[0025] The main design of the present utility model is a main shaft structure of a thread rolling machine, which is used for driving the main shaft of the thread rolling machine for operation. After the overall equipment is powered on, the servo motor 2 is controlled to work. The servo motor 2 transmits power to the worm 1 through the first coupling 4. During the rotation of the worm 1, the turbine 3 is driven. The turbine 3 then transmits power to the ball screw 6 and the nut 7 through the second coupling 8, thereby realizing the linear motion of the nut.

[0026] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the connection inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0027] Secondly: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A thread rolling machine main shaft structure, comprising a worm (1), a servo motor (2), and a turbine (3), characterized in that: A worm (1) is disposed at one end of the servo motor (2), and a meshing turbine (3) is disposed on one side of the worm (1), wherein a first coupling (4) is disposed between the output end of the servo motor (2) and the worm (1), a support rod (5) is installed through the turbine (3), and a ball screw (6) is disposed at one end of the support rod (5).

2. The thread rolling machine main shaft structure according to claim 1, characterized in that: A second coupling (8) is provided between the support rod (5) and the ball screw (6), wherein an external thread of the ball screw (6) is provided with a matching nut (7).

3. The thread rolling machine main shaft structure according to claim 1, characterized in that: A support seat is provided at the end of the support rod (5), wherein a movable bearing is provided between the support rod (5) and the support seat.

4. The thread rolling machine main shaft structure according to claim 1, characterized in that: The worm (1) and the ball screw (6) are both provided with tapered roller bearings.

5. The thread rolling machine main shaft structure according to claim 2, characterized in that: The periphery of the nut (7) is a square structure, which is used to limit the position of the nut (7) during the sliding process.

6. The thread rolling machine main shaft structure according to claim 1, characterized in that: The servo motor (2) is mounted on the thread rolling machine via a motor support seat.

7. The thread rolling machine main shaft structure according to claim 1, characterized in that: The worm (1) is arranged in the X-axis direction, and the lead screw (6) is arranged in the Y-axis direction.

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