Numerical control lathe X-direction lead screw mechanism capable of rotating stably

Abstract

The utility model discloses a numerical control lathe X-direction lead screw mechanism capable of rotating stably, which comprises a saddle and a motor seat positioned at the front end of the saddle, and an open cavity is formed in the front half part of the saddle; an X-direction nut seat and a rear supporting seat are integrally formed in the middle part and the rear part of the open cavity; the rear end of the motor base, the X-direction nut base and the rear supporting base are rotationally connected with an X-direction lead screw. The saddle has the advantages that the open cavity is arranged, so that forming and casting are facilitated, the workblank defective product rate is reduced, the machinability of the saddle is greatly improved, the labor productivity is improved, and the cost is saved; after the X-direction lead screw positioning mode is changed from two-point positioning to three-point positioning, the X-direction lead screw rotates more stably, and the machining precision is higher; the mounting position of the first bearing on the X-direction lead screw is changed from the interior of the saddle to the rear end of the motor base, the coaxiality of all center positions and the perpendicularity of the opposite end faces of all the center positions can be more effectively guaranteed, and the precision and stability of a machine tool are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC lathe lead screws, and particularly relates to an X-axis lead screw mechanism of a CNC lathe with stable rotation. Background Art

[0002] The X-axis lead screw of a CNC lathe is a key component for realizing the movement in the X-axis direction in a CNC lathe. In a CNC lathe, the X-axis usually refers to the lateral movement, that is, the movement of the tool or the workpiece along the horizontal direction. The X-axis lead screw is responsible for converting the rotational motion of the motor into the linear motion of the tool or the workpiece table, so as to achieve precise cutting. Currently, the saddle of the X-axis lead screw part of the CNC lathe to be improved is closed, which is not convenient for manufacturing; the front bearing is installed in the saddle, resulting in low assembly accuracy of the machine tool; the rotational stability of the X-axis lead screw is poor, resulting in low accuracy of the machined workpiece. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an X-axis lead screw mechanism of a CNC lathe with stable rotation.

[0004] To solve the above technical problem, the technical solution of the utility model is as follows:

[0005] An X-axis lead screw mechanism of a CNC lathe with stable rotation, comprising a saddle and a motor seat at the front end of the saddle. An open cavity is provided in the front half of the saddle; an X-axis nut seat and a rear support seat are integrally formed in the middle and rear of the open cavity; an X-axis lead screw is rotatably connected to the rear end of the motor seat, the X-axis nut seat and the rear support seat.

[0006] Further, a first bearing is provided between the motor seat and the X-axis lead screw.

[0007] Further, a gland is detachably connected to the position where the first bearing is connected to the X-axis lead screw.

[0008] Further, a second bearing is provided between the rear support seat and the X-axis lead screw.

[0009] Further, a snap ring is provided at the position where the second bearing is connected to the rear support seat.

[0010] Further, a motor is detachably connected to the front end of the motor seat; the output end of the motor is detachably connected to the X-axis lead screw.

[0011] Advantages of the Utility Model

[0012] By setting an open cavity, the bed saddle is changed from a closed structure to an open one, which facilitates forming casting, reduces the defective rate of blanks, significantly improves the machinability of the bed saddle, increases labor productivity and saves costs. The rear end of the motor base, the X-direction nut seat, the rear support seat are used to support the X-direction lead screw. After the positioning method of the X-direction lead screw is changed from two-point positioning to three-point positioning, the rigidity and stability of the machine tool are increased, the rotation of the X-direction lead screw becomes more stable, the cutting is more powerful, and the machining accuracy is higher. After the installation position of the first bearing on the X-direction lead screw is changed from inside the bed saddle to the rear end of the motor base, the coaxiality of each center position and the perpendicularity of each center position to the end face can be more effectively guaranteed, which greatly improves the later assembly work, can more effectively guarantee the machine tool accuracy, and improves the accuracy and stability of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present invention;

[0014] Figure 2 is Figure 1 an enlarged view of part A in

[0015] Figure 3 is Figure 1 an enlarged view of part B in

[0016] In the figure, 1 - bed saddle, 2 - motor base, 3 - open cavity, 4 - X-direction nut seat, 5 - rear support seat, 6 - X-direction lead screw, 7 - first bearing, 8 - second bearing, 9 - gland, 10 - motor, 11 - retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the specific embodiments of the present invention with reference to the drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] Referring to Figures 1-3 as shown, a rotationally stable X-direction lead screw mechanism of a numerically controlled lathe includes a bed saddle 1, a motor base 2 located at the front end of the bed saddle 1, and an open cavity 3 is provided in the front half of the bed saddle 1; an X-direction nut seat 4 and a rear support seat 5 are integrally formed in the middle and rear of the open cavity 3; an X-direction lead screw 6 is rotatably connected to the rear end of the motor base 2, the X-direction nut seat 4 and the rear support seat 5.

[0019] It should be noted that the bed saddle 1 is the supporting part of the X-axis lead screw mechanism of the CNC lathe, facilitating support; the setting of the motor base 2 enables driving devices such as motors to drive the lead screw to move conveniently; the open cavity 3 is an improved solution for the original bed saddle 1, changing the bed saddle 1 from a closed type to an open type, facilitating forming casting, reducing the defective rate of blanks, significantly improving the machinability of the bed saddle 1, increasing labor productivity and saving costs. The rear end of the motor base 2, the X-axis nut seat 4, the rear support seat 5 are used to support the X-axis lead screw 6; after the positioning method of the X-axis lead screw 6 is changed from two-point positioning to three-point positioning, the rigidity and stability of the machine tool are increased, making the rotation of the X-axis lead screw 6 more stable, the cutting more powerful, and the machining accuracy higher.

[0020] Specifically, in order to facilitate the rotation between the motor base 2 and the X-axis lead screw 6, a first bearing 7 is provided between the motor base 2 and the X-axis lead screw 6.

[0021] Specifically, in order to ensure the stability of the first bearing 7, a gland 9 is detachably connected to the connection position between the first bearing 7 and the X-axis lead screw 6.

[0022] Specifically, in order to ensure the rotation between the rear support seat 5 and the X-axis lead screw 6, a second bearing 8 is provided between the rear support seat 5 and the X-axis lead screw 6.

[0023] Specifically, in order to ensure the stability of the second bearing 8 and the rear support seat 5, a retaining ring 11 is provided at the connection position between the second bearing 8 and the rear support seat 5.

[0024] Specifically, a motor 10 is detachably connected to the front end of the motor base 2; the output end of the motor 10 is detachably connected to the X-axis lead screw 6; the motor 10 is the power source of the X-axis lead screw 6.

[0025] The working principle of the present utility model:

[0026] During use, the open cavity 3 is an improved solution for the original bed saddle 1, changing the bed saddle 1 from a closed type to an open type, facilitating forming casting, reducing the defective rate of blanks, significantly improving the machinability of the bed saddle 1, increasing labor productivity and saving costs. The rear end of the motor base 2, the X-axis nut seat 4, the rear support seat 5 are used to support the X-axis lead screw 6; after the positioning method of the X-axis lead screw 6 is changed from two-point positioning to three-point positioning, the rigidity and stability of the machine tool are increased, making the rotation of the X-axis lead screw 6 more stable, the cutting more powerful, and the machining accuracy higher. After the installation position of the first bearing 7 on the X-axis lead screw 6 is changed from inside the bed saddle 1 to the rear end of the motor base 2, the coaxiality of each center position and the perpendicularity of each center position to the end face can be more effectively guaranteed, the later assembly process is fully improved, the accuracy of the machine tool can be more effectively guaranteed, and the accuracy and stability of the machine tool are improved.

[0027] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A numerically controlled lathe X-axis lead screw mechanism with stable rotation, comprising a carriage (1) and a motor base (2) located at the front end of the carriage (1), characterized in that: An open cavity (3) is provided in the front half of the bed saddle (1); an X-direction nut seat (4) and a rear support seat (5) are integrally formed in the middle and rear of the open cavity (3); an X-direction screw rod (6) is rotatably connected to the rear end of the motor seat (2), the X-direction nut seat (4) and the rear support seat (5); a first bearing (7) is provided between the motor seat (2) and the X-direction screw rod (6); a second bearing (8) is provided between the rear support seat (5) and the X-direction screw rod (6); the front end of the motor seat (2) is detachably connected with a motor (10); the output end of the motor (10) is detachably connected with the X-direction screw rod (6).

2. The X-axis lead screw mechanism of the numerically controlled lathe with stable rotation according to claim 1, characterized in that: A gland (9) is detachably connected to the connection position between the first bearing (7) and the X-direction screw rod (6).

3. The X-axis lead screw mechanism of the numerically controlled lathe with stable rotation according to claim 1, characterized in that: A retaining ring (11) is provided at the connection position between the second bearing (8) and the rear support seat (5).

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