Machining center spindle transmission mechanism

Abstract

The utility model discloses a spindle transmission mechanism of a machining center, which relates to the technical field of machining centers and comprises a spindle box. The motor is arranged at the upper end of the main shaft box, a main shaft body is arranged at the front end in the main shaft box and extends out of the bottom of the main shaft box, a rotating shaft is arranged in the main shaft box, the motor is connected with the rotating shaft, two first gears are arranged outside the rotating shaft, and the two first gears are connected with the main shaft; two second gears are arranged outside the main shaft body, a roller is arranged at the front end of the support, the roller is attached to the belt and can be driven to rotate together when the belt rotates, limiting discs are arranged at the upper end and the lower end of the roller, and the limiting discs are clamped at the upper end and the lower end of the edge of the belt; the transmission belt is limited through the limiting disc, so that the transmission belt is not prone to falling off from the gear.

Description

Technical Field

[0001] The utility model relates to the technical field of machining centers, in particular to a main shaft transmission mechanism of a machining center. Background Technique

[0002] A vertical machining center is a highly automated multi-functional numerical control machine tool that can realize various machining operations on workpieces. Its characteristic is that the axis of the main shaft is perpendicular to the workbench, and it can complete various processes such as milling, boring, drilling, tapping, and cutting threads. The vertical machining center realizes the cutting machining of workpieces through the relative movement of the rotation of the cutting tool and the feeding of the workpiece. The cutting tool is driven by the main shaft to rotate at high speed, and the workpiece is linearly or rotationally fed through the workbench. The relative movement between the cutting tool and the workpiece generates a cutting force, thereby realizing the cutting machining of the workpiece.

[0003] The usual main shaft transmission mechanism is driven by a belt and gears. However, since there is no limiting mechanism on the upper and lower sides of the belt, it is easy for the belt to disengage from the gears during the transmission process, resulting in the inability to continue driving the main shaft and affecting the machining efficiency. Therefore, we propose a main shaft transmission mechanism of a machining center to solve the problems mentioned above. Content of the Utility Model

[0004] The purpose of the utility model is to provide a main shaft transmission mechanism of a machining center to solve the problem mentioned in the above background technique that the usual main shaft transmission mechanism is driven by a belt and gears. However, since there is no limiting mechanism on the upper and lower sides of the belt, it is easy for the belt to disengage from the gears during the transmission process, resulting in the inability to continue driving the main shaft and affecting the machining efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A main shaft transmission mechanism of a machining center, including a main shaft box;

[0006] It further includes:

[0007] A motor, which is arranged at the upper end of the main shaft box. A main shaft body is arranged at the front end inside the main shaft box, and the main shaft body extends out of the bottom of the main shaft box. A rotating shaft is arranged inside the main shaft box, and the motor is connected to the rotating shaft. A first gear is arranged outside the rotating shaft, and there are two first gears. A second gear is arranged outside the main shaft body, and there are two second gears. The first gears and the second gears are connected and driven by a transmission belt. An installation rack is arranged at the rear end inside the main shaft box. A bracket is arranged at the front end of the installation rack. A roller is arranged at the front end of the bracket. The roller rotates at the front end of the bracket through a bearing, and the roller is attached to one side of the transmission belt. Limiting disks are symmetrically arranged at the upper and lower ends of the roller, and the limiting disks are movably engaged with the upper and lower ends of one side edge of the transmission belt.

[0008] Preferably, a first limiting step is arranged outside the rotating shaft, and the first limiting steps are respectively located below the two first gears. A second limiting step is arranged outside the main shaft body, and the second limiting steps are respectively located below the two second gears.

[0009] Preferably, a fan is arranged above the motor.

[0010] Preferably, a cylinder is arranged on the front side of the upper end of the main shaft box, and the cylinder is connected to the fixture below the main shaft body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By arranging gears outside the rotating shaft and the main shaft body and connecting and driving them through a transmission belt, the motor drives the rotating shaft to drive the main shaft body to rotate. At the same time, a bracket is arranged at the rear end inside the main shaft box, and a roller is arranged at the front end of the bracket. The roller is attached to the belt and can drive the roller to rotate together when the belt rotates. Limiting disks are arranged at both the upper and lower ends of the roller, and the limiting disks are clamped at the upper and lower ends of the edge of the belt. The transmission belt is limited by the limiting disks, so that the transmission belt is not easily detached from the gear, and the synchronous rotation of the roller and the transmission belt can reduce the friction between the belt and the limiting disks, thereby improving the service life of the belt and reducing the noise generated by the friction between the belt and the limiting disks.

[0013] 2. By arranging two groups of gears on both the rotating shaft and the main shaft body, two groups of belts can be arranged for transmission, thereby improving the stability of the transmission between the rotating shaft and the main shaft. If one belt falls off, another belt can still be used for transmission, which is convenient for persisting until the completion of workpiece processing and preventing damage to the tool and the workpiece caused by the non-rotation of the main shaft during the workpiece processing due to the breakage or detachment of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a left-side schematic view of the overall structure of the present utility model;

[0015] Figure 2 is a right-side schematic view of the overall structure of the present utility model;

[0016] Figure 3 is an internal sectional view of the overall structure of the present utility model;

[0017] Figure 4 is a side view of the connection between the roller and the belt of the present utility model;

[0018] In the figure: 1. Headstock; 2. Motor; 3. Cylinder; 4. Fan; 5. Spindle body; 6. Rotating shaft; 7. First gear; 8. Second gear; 9. Transmission belt; 10. First limiting step; 11. Second limiting step; 12. Mounting bracket; 13. Bracket; 14. Roller; 15. Limiting disc. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Please refer to Figures 1-4 , an embodiment provided by the present invention: a spindle drive mechanism for a machining center, including a headstock 1;

[0021] It further includes:

[0022] A motor 2, which is arranged at the upper end of the headstock 1. A spindle body 5 is arranged at the front end inside the headstock 1, and the spindle body 5 extends out of the bottom of the headstock 1. A rotating shaft 6 is arranged inside the headstock 1, and the motor 2 is connected to the rotating shaft 6. A first gear 7 is arranged outside the rotating shaft 6, and there are two first gears 7. A second gear 8 is arranged outside the spindle body 5, and there are two second gears 8. The first gear 7 and the second gear 8 are connected and driven by a transmission belt 9. An installation bracket 12 is arranged at the rear end inside the headstock 1. A bracket 13 is arranged at the front end of the installation bracket 12. A roller 14 is arranged at the front end of the bracket 13. The roller 14 rotates at the front end of the bracket 13 through a bearing, and the roller 14 is attached to one side of the transmission belt 9. Limiting discs 15 are symmetrically arranged at the upper and lower ends of the roller 14, and the limiting discs 15 are movably engaged with the upper and lower ends of one side edge of the transmission belt 9.

[0023] A roller 14 is arranged at the front end of the bracket 13, and the roller 14 is attached to the belt. When the belt rotates, the roller 14 can be driven to rotate together. Limiting discs 15 are arranged at both the upper and lower ends of the roller 14, and the limiting discs 15 are engaged with the upper and lower ends of the belt edge. The transmission belt 9 is limited by the limiting discs 15, so that the transmission belt 9 is not easily detached from the gear.

[0024] Please refer to Figure 3 , a first limiting step 10 is arranged outside the rotating shaft 6, and the first limiting step 10 is respectively located below the two first gears 7. A second limiting step 11 is arranged outside the spindle body 5, and the second limiting step 11 is respectively located below the two second gears 8, to limit and fix the positions of the two groups of gears and prevent the gears from sliding and falling off.

[0025] Please refer to Figure 1, a fan 4 is arranged above the motor 2 to improve the heat dissipation of the motor 2.

[0026] Please refer to Figure 1 , a cylinder 3 is arranged on the front side of the upper end of the headstock 1, and the cylinder 3 is connected to the fixture below the main shaft body 5 to control the opening and closing of the fixture below the main shaft body 5.

[0027] Working principle: Gears are arranged outside the rotating shaft 6 and the main shaft body 5 and are connected and driven by a transmission belt 9, so that the motor 2 drives the rotating shaft 6 to drive the main shaft body 5 to rotate. At the same time, a bracket 13 is arranged at the rear end inside the headstock 1, and a roller 14 is arranged at the front end of the bracket 13. The roller 14 is attached to the belt and can drive the roller 14 to rotate together when the belt rotates. Limit disks 15 are arranged at both the upper and lower ends of the roller 14. The limit disks 15 are engaged with the upper and lower ends of the edge of the belt to limit the transmission belt 9 through the limit disks 15, so that the transmission belt 9 is not easily detached from the gear. Moreover, the synchronous rotation of the roller 14 and the transmission belt 9 can reduce the friction between the belt and the limit disks 15, thereby improving the service life of the belt and reducing the noise generated by the friction between the belt and the limit disks 15.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A spindle transmission mechanism for a machining center, comprising a spindle box (1); Features: Also includes: The motor (2) is arranged at the upper end of the spindle box (1); the spindle body (5) is arranged at the front end of the spindle box (1), and the spindle body (5) extends out of the bottom of the spindle box (1); the spindle box (1) is provided with a rotating shaft (6), and the motor (2) is connected to the rotating shaft (6); the rotating shaft (6) is provided with a first gear (7) outside, and the first gear (7) is provided with two; the spindle body (5) is provided with a second gear (8), and the second gear (8) is provided with two, and the first gear (7) and the second gear (8) are connected. (8) are connected and transmitted via a transmission belt (9); a mounting frame (12) is arranged at the rear end of the main spindle box (1); a bracket (13) is arranged at the front end of the mounting frame (12); a roller (14) is arranged at the front end of the bracket (13); the roller (14) rotates at the front end of the bracket (13) via a bearing, and the roller (14) is attached to one side of the transmission belt (9); upper and lower ends of the roller (14) are symmetrically provided with limit plates (15), and the limit plates (15) are movably engaged with the upper and lower ends of the edge of one side of the transmission belt (9).

2. A spindle transmission mechanism for a machining center according to claim 1, characterized in that: A first limiting step (10) is arranged outside the rotating shaft (6), and the first limiting step (10) is respectively located below the two first gears (7); a second limiting step (11) is arranged outside the main shaft body (5), and the second limiting step (11) is respectively located below the two second gears (8).

3. The spindle transmission mechanism of a machining center according to claim 1, characterized in that: A fan (4) is arranged above the motor (2).

4. A spindle transmission mechanism for a machining center according to claim 1, characterized in that: A cylinder (3) is provided on the front side of the upper end of the spindle box (1), and the cylinder (3) is connected to a clamp below the spindle body (5).

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