Main shaft synchronous belt tensioning structure and numerical control machining lathe

Abstract

The utility model relates to the technical field of numerical control machining lathes, in particular to a spindle synchronous belt tensioning structure and a numerical control machining lathe, which comprise a lathe casting body and a rotating spindle, the rotating spindle is rotatably arranged in the spindle casting body, one end of the rotating spindle is a synchronous wheel, and one side of the lathe casting body is provided with a driving seat for driving the synchronous wheel. A driving motor is arranged at the top of the driving seat, the output end of the driving motor is in transmission connection with the synchronous wheel through a synchronous belt, a horizontal moving assembly is arranged on the end face, close to the synchronous wheel, of the lathe casting body, the driving seat is movably connected to the middle of the horizontal moving assembly, and the driving seat can horizontally move along the horizontal moving assembly. The synchronous belt between the rotating main shaft and the driving motor can be tensioned without a tensioning wheel, so that effective transmission between the synchronous wheel of the rotating main shaft and the output shaft of the driving motor is ensured, the rotating main shaft has more stable revolutions, and the machining working condition of the numerical control machining lathe is stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled lathes, in particular to a main shaft synchronous belt tensioning structure and a numerically controlled lathe. Background Art

[0002] The main structure of a lathe: A common lathe mainly consists of components such as a bed, a headstock, a tool post, and a tailstock. A lathe is a machine tool mainly used for turning a rotating workpiece with a turning tool. The main shaft of a lathe refers to the rotating main shaft on the machine tool that drives the workpiece or the tool to rotate. Generally, a three-jaw chuck is provided at one end of the rotating main shaft, and a synchronous pulley is provided at the other end. The drive motor on one side of the bed is driven through a synchronous belt, so that the workpiece can be rotated and processed inside the three-jaw chuck.

[0003] In existing lathes or other mechanical equipment, generally, a tensioning wheel structure is adopted to tension the synchronous belt, so as to ensure that the rotating main shaft has a relatively stable rotational speed. Therefore, in view of these current situations, there is an urgent need to develop a main shaft synchronous belt tensioning structure and a numerically controlled lathe to meet the actual use requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a main shaft synchronous belt tensioning structure and a numerically controlled lathe, which are used to improve the tension degree of the synchronous belt between the rotating main shaft and the drive motor, so that the rotating main shaft has a relatively stable rotational speed.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A main shaft synchronous belt tensioning structure includes a lathe casting and a rotating main shaft. At the top of one end of the lathe casting, there is a main shaft casting for installing the rotating main shaft. The rotating main shaft is rotatably arranged inside the main shaft casting. One end of the rotating main shaft is a synchronous pulley. On one side of the lathe casting, there is a drive seat for driving the synchronous pulley. At the top of the drive seat, there is a drive motor. The output end of the drive motor is connected to the synchronous pulley through a synchronous belt for transmission. On the end face of the lathe casting close to the synchronous pulley, there is a horizontal movement component. The drive seat is movably connected to the middle of the horizontal movement component, and the drive seat can move horizontally along the horizontal movement component.

[0007] In the above description, as a further scheme, the horizontal movement component includes a guide frame, a lead screw, and a mounting slider. The two ends of the lead screw are respectively rotatably connected to the two sides inside the guide frame, and the lead screw penetrates through the middle of the mounting slider for screw connection. The mounting slider can move horizontally inside the guide frame.

[0008] In the above description, as a further scheme, the drive seat has a right-angled cross-sectional structure, and the side wall of the drive seat is fixedly connected to the mounting slider.

[0009] A numerically controlled lathe includes the above-mentioned main shaft synchronous belt tensioning structure, and also includes an x-axis casting, a y-axis casting, and a machining tool holder. The y-axis casting is structured such that its axial direction is perpendicular to the axial direction of the x-axis casting, and the machining tool holder is arranged above the y-axis casting.

[0010] In the above description, as a further solution, a horizontally arranged first guide rail is provided in the middle of the x-axis casting. The y-axis casting is horizontally movably connected to the middle of the x-axis casting through the first guide rail. An x-axis lead screw drive mechanism is provided inside the x-axis casting, and the y-axis casting can move horizontally along one side of the rotating main shaft through the x-axis lead screw drive mechanism.

[0011] In the above description, as a further solution, a sliding plate is provided in the middle of the y-axis casting. The machining tool holder is fixedly connected to the top surface of the sliding plate. A second guide rail is provided between the sliding plate and the y-axis casting, and the sliding plate is movably connected to the top surface of the y-axis casting through the second guide rail. A y-axis lead screw drive mechanism is provided inside the y-axis casting, and the sliding plate can move obliquely along the axial direction of the y-axis casting through the y-axis lead screw drive mechanism.

[0012] In the above description, as a further solution, both the x-axis lead screw drive mechanism and the y-axis lead screw drive mechanism are composed of a lead screw transmission part and a motor control part.

[0013] The beneficial effects produced by the present utility model are as follows:

[0014] For a main shaft synchronous belt tensioning structure and a numerically controlled lathe of the present application, a horizontal movement assembly is provided on one end face of the lathe casting close to the synchronous pulley. The driving seat is movably arranged on the side wall of the lathe casting through the horizontal movement assembly, so that a structure with an adjustable distance is formed between the synchronous pulley of the rotating main shaft and the output shaft of the driving motor. The tensioning of the synchronous belt between the two can be completed without the need for a tensioning pulley, ensuring the effective transmission between the synchronous pulley of the rotating main shaft and the output shaft of the driving motor, enabling the rotating main shaft to have a relatively stable rotational speed, and stabilizing the machining conditions of the numerically controlled lathe. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a main shaft synchronous belt tensioning structure and a numerically controlled lathe according to the present utility model at a first angle;

[0016] Figure 2 It is a partial exploded structural schematic diagram of a main shaft synchronous belt tensioning structure and a numerically controlled lathe according to the present utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of a main shaft synchronous belt tensioning structure and a numerically controlled lathe according to the present utility model at a second angle;

[0018] In the figure: 1- lathe casting, 11- driving seat, 13- driving motor, 14- horizontal moving assembly, 141- guide frame, 142- lead screw, 143- mounting slide block, 2- spindle casting, 3- x-axis casting, 31- first guide rail, 4- y-axis casting, 41- second guide rail, 5- machining tool holder, 6- rotating spindle, 61- synchronous wheel, 7- sliding plate, 8- y-axis lead screw driving mechanism, 9- x-axis lead screw driving mechanism, 91- lead screw transmission unit, 92- motor control unit. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0020] See also Figures 1-3 A specifically implemented CNC machining lathe with a spindle synchronous belt tensioning structure includes a lathe casting 1 and a rotating spindle 6. A spindle casting 2 for mounting the rotating spindle 6 is provided at the top of one end of the lathe casting 1. The rotating spindle 6 is rotatably arranged inside the spindle casting 2. One end of the rotating spindle 6 is a synchronous wheel 61. A driving seat 11 for driving the synchronous wheel 61 is provided on one side of the lathe casting 1. A driving motor 13 is provided on the top of the driving seat 11. The output end of the driving motor 13 is connected to the synchronous wheel 61 through a synchronous belt. A horizontal moving component 14 is provided on one end surface of the lathe casting 1 close to the synchronous wheel 61. The driving seat 11 can be movably connected to the middle of the horizontal moving component 14, and the driving seat 11 can move horizontally along the horizontal moving component 14.

[0021] Specific as Figure 2 As shown, the horizontal moving assembly 14 includes a guide frame 141, a screw rod 142 and a mounting slide block 143. The two ends of the screw rod 142 are rotatably connected to the inner sides of the guide frame 141, and the screw rod 142 passes through the middle of the mounting slide block 143 for screw connection. The mounting slide block 143 can be located inside the guide frame 141 for horizontal movement. The driving seat 11 has a right-angle structure in cross section, and the side wall of the driving seat 11 is fixedly connected to the mounting slide block 143.

[0022] In a further solution, it also includes an x-axis casting 3, a y-axis casting 4 and a processing tool holder 5, the axial direction of the y-axis casting 4 is kept perpendicular to the axial direction of the x-axis casting 3, and the processing tool holder 5 is arranged above the y-axis casting 4.

[0023] Specific as Figure 3As shown in the figure, a horizontally arranged first guide rail 31 is provided in the middle of the x-axis casting 3. The y-axis casting 4 is horizontally movably connected to the middle of the x-axis casting 3 through the first guide rail 31. A sliding plate 7 is provided in the middle of the y-axis casting 4. The machining tool holder 5 is fixedly connected to the top surface of the sliding plate 7. A second guide rail 41 is provided between the sliding plate 7 and the y-axis casting 4. The sliding plate 7 is movably connected to the top surface of the y-axis casting 4 through the second guide rail 41. An x-axis lead screw driving mechanism 9 is provided inside the x-axis casting 3. The y-axis casting 4 can move horizontally along one side of the rotating spindle 6 through the x-axis lead screw driving mechanism 9. A y-axis lead screw driving mechanism 8 is provided inside the y-axis casting 4. The sliding plate 7 can move obliquely along the axial direction of the y-axis casting 4 through the y-axis lead screw driving mechanism 8. Both the x-axis lead screw driving mechanism 9 and the y-axis lead screw driving mechanism 8 are composed of a lead screw transmission part 91 and a motor control part 92.

[0024] Working principle of the main shaft synchronous belt tensioning structure: A horizontal moving assembly 14 is provided on one end face of the lathe casting 1 close to the synchronous pulley 61. The driving seat 11 is movably arranged on the side wall of the lathe casting 1 through the horizontal moving assembly 14, so that a structure with an adjustable distance is formed between the synchronous pulley 61 of the rotating spindle 6 and the output shaft of the driving motor 13. The tensioning of the synchronous belt between the two can be completed without the setting of a tensioning pulley, ensuring the effective transmission between the synchronous pulley 61 of the rotating spindle 6 and the output shaft of the driving motor 13, enabling the rotating spindle 6 to have a relatively stable rotational speed and stabilizing the machining conditions of the CNC lathe.

[0025] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention is disclosed above in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical meaning of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A spindle synchronous belt tensioning structure, comprising a lathe casting and a rotating spindle, wherein a spindle casting for mounting the rotating spindle is provided at the top of one end of the lathe casting, the rotating spindle is rotatably arranged inside the spindle casting, and one end of the rotating spindle is a synchronous wheel, characterized in that: A driving seat for driving a synchronous wheel is provided on one side of the lathe casting, a driving motor is provided on the top of the driving seat, the output end of the driving motor is connected to the synchronous wheel through a synchronous belt, a horizontal moving assembly is provided on one end surface of the lathe casting close to the synchronous wheel, the driving seat can be movably connected to the middle part of the horizontal moving assembly, and the driving seat can move horizontally along the horizontal moving assembly.

2. A main shaft synchronous belt tensioning structure according to claim 1, characterized in that: The horizontal moving assembly includes a guide frame, a screw rod and a mounting slide block. The two ends of the screw rod are rotatably connected to the inner sides of the guide frame, and the screw rod passes through the middle of the mounting slide block for threaded connection. The mounting slide block can be located inside the guide frame for horizontal movement.

3. A main shaft synchronous belt tensioning structure according to claim 2, characterized in that: The driving seat has a right-angle structure in cross section, and the side wall of the driving seat is fixedly connected to the mounting slide block.

4. A CNC machining lathe, characterized in that: The invention comprises the spindle synchronous belt tensioning structure as described in any one of claims 1 to 3, and also comprises an x-axis casting, a y-axis casting and a machining tool holder, wherein the axial direction of the y-axis casting is kept perpendicular to the axial direction of the x-axis casting, and the machining tool holder is arranged above the y-axis casting.

5. A CNC machining lathe according to claim 4, characterized in that: A horizontally arranged first guide rail is provided in the middle of the x-axis casting, and the y-axis casting can be horizontally movably connected to the middle of the x-axis casting through the first guide rail. An x-axis screw drive mechanism is provided inside the x-axis casting, and the y-axis casting can move horizontally along one side of the rotating spindle through the x-axis screw drive mechanism.

6. A CNC machining lathe according to claim 5, characterized in that: A sliding plate is provided in the middle of the y-axis casting, the machining tool seat is fixedly connected to the top end surface of the sliding plate, a second guide rail is provided between the sliding plate and the y-axis casting, the sliding plate is movably connected to the top end surface of the y-axis casting through the second guide rail, a y-axis screw drive mechanism is provided inside the y-axis casting, and the sliding plate can be tilted and moved along the axial direction of the y-axis casting through the y-axis screw drive mechanism.

7. A CNC machining lathe according to claim 6, characterized in that: The x-axis screw drive mechanism and the y-axis screw drive mechanism are both composed of a screw transmission part and a motor control part.

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