Inverted lathe for machining shaft parts

Abstract

The utility model relates to the technical field of machining, in particular to an inverted lathe for machining shaft parts. The hydraulic chuck clamps the upper end of a workpiece under the action of the hydraulic oil cylinder, the position of the center sliding plate is adjusted through the center Z-direction guide rail according to the length of the workpiece, the hydraulic station works, the hydraulic center moves upwards to abut against and fix the workpiece, and the rear motorized spindle drives the spindle unit to drive the workpiece to rotate for turning. The Z-axis servo motor drives the sliding saddle to move on the Z-axis guide rail in the Z-axis direction through the Z-axis lead screw, the X-axis servo motor drives the sliding plate to move on the X-axis guide rail in the X-axis direction through the X-axis lead screw, the servo tool turret is driven to move in the Z-axis direction and the X-axis direction, the servo tool turret is matched with the rotating main shaft unit on the other side, and workpiece turning is completed. According to the utility model, the rear motor type motorized spindle design is adopted, so that the belt transmission loss is reduced; the integrated lathe bed design is adopted, so that the part machining precision is higher and more stable; the lathe is small in occupied area, and equipment layout is easier and more flexible.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to an inverted lathe for machining shaft-type parts. Background Technology

[0002] In the field of machining, lathes are one of the main pieces of equipment for machining shaft parts. Traditional lathes rely heavily on belt drive systems for spindle drive. Belts are prone to wear and loosening over long-term use, leading to decreased transmission efficiency and increased losses. At the same time, most lathes adopt a split bed structure design, which lacks rigidity and cannot meet the requirements of high-precision machining. Furthermore, the overall space occupied by the equipment is large, requiring a high level of installation space and limiting the flexibility of equipment layout. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and propose an inverted lathe for machining shaft parts. With a rear-mounted electric spindle, an integrated bed, and a compact layout, it can adapt to the machining of shaft parts with a diameter of less than 200mm and a length between 200mm and 800mm.

[0004] To achieve the above objectives, the present invention adopts the following specific technical solution:

[0005] The inverted lathe for machining shaft parts provided by this utility model includes a bed, a spindle unit, a rear electric spindle, a chuck, a center Z-axis guide rail, a center slide plate, a center, a Z-axis guide rail, a Z-axis lead screw, a slide saddle, an X-axis guide rail, an X-axis lead screw, a slide plate, a servo turret, a Z-axis servo motor, and an X-axis servo motor.

[0006] The spindle unit is mounted on the bed and is equipped with a chuck for clamping the workpiece. The center Z-axis guide rail is fixedly mounted on the bed, and the center is mounted on the center slide. The center slide is connected to the center Z-axis guide rail to allow the center to move along the Z-axis and cooperate with the chuck to fix the workpiece. The rear electric spindle is used to drive the spindle unit to rotate the workpiece for turning.

[0007] The Z-axis guide rail is mounted on the bed and connected to the slide saddle via the Z-axis lead screw. The X-axis guide rail is mounted on the slide saddle and connected to the slide plate via the X-axis lead screw. A servo turret is mounted on the slide plate.

[0008] The Z-axis servo motor drives the slide saddle to move along the Z-axis direction, and the X-axis servo motor drives the slide plate to move along the X-axis direction. This is used to control the movement of the servo turret along the Z-axis and X-axis directions, and to cooperate with the spindle unit to complete the workpiece turning.

[0009] Preferably, the chuck is a hydraulic chuck, which is controlled by a hydraulic cylinder to clamp the workpiece, and the center is a hydraulic center, which is controlled by a hydraulic station set on the bed to fix the workpiece.

[0010] This utility model can achieve the following technical effects:

[0011] The inverted lathe for machining shaft parts provided by this utility model adopts a rear-mounted electric spindle design to reduce belt transmission loss; it adopts an integrated bed design to make the machining accuracy of parts higher and more stable; the lathe of this utility model has a small footprint and the equipment layout is easier and more flexible. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an inverted lathe for machining shaft-type parts according to an embodiment of the present utility model.

[0013] The reference numerals in the figures include:

[0014] 1. Bed; 2. Spindle unit; 3. Rear electric spindle; 4. Chuck; 5. Center Z-axis guide rail; 6. Center slide plate; 7. Center; 8. Z-axis guide rail; 9. Z-axis lead screw; 10. Saddle; 11. X-axis guide rail; 12. X-axis lead screw; 13. Slide plate; 14. Servo turret; 15. Z-axis servo motor; 16. X-axis servo motor; 17. Hydraulic cylinder; 18. Hydraulic station. Detailed Implementation

[0015] In the following description, embodiments of the present invention will be described with reference to the accompanying drawings. In the description below, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not constitute a limitation thereof.

[0017] This utility model embodiment provides an inverted lathe for machining shaft-type parts, the structure of which is as follows: Figure 1 As shown, it includes a bed 1, a spindle unit 2, a rear electric spindle 3, a chuck 4, a center Z-axis guide rail 5, a center slide plate 6, a center 7, a Z-axis guide rail 8, a Z-axis lead screw 9, a slide saddle 10, an X-axis guide rail 11, an X-axis lead screw 12, a slide plate 13, a servo turret 14, a Z-axis servo motor 15, an X-axis servo motor 16, a hydraulic cylinder 17, and a hydraulic station 18.

[0018] The spindle unit 2 is mounted on the bed 1. The spindle unit 2 is equipped with a chuck 4 for clamping the workpiece. The center Z-axis guide rail 5 is fixedly mounted on the bed 1. The center 7 is mounted on the center slide 6. The center slide 6 is connected to the center Z-axis guide rail 5 and is used to make the center 7 move along the Z-axis and cooperate with the chuck 4 to fix the workpiece. The rear electric spindle 3 is used to drive the spindle unit 2 to perform turning operations.

[0019] The Z-axis guide rail 8 is mounted on the bed 1 and connected to the slide saddle 10 via the Z-axis lead screw 9. The X-axis guide rail 11 is mounted on the slide saddle 10 and connected to the slide plate 13 via the X-axis lead screw 12. A servo turret 14 is mounted on the slide plate 13.

[0020] Z-axis servo motor 15 drives slide saddle 10 to move along the Z-axis direction, and X-axis servo motor 16 drives slide plate 13 to move along the X-axis direction. This is used to control the servo turret 14 to move along the Z-axis and X-axis directions, and cooperate with spindle unit 2 to complete workpiece turning.

[0021] In a preferred embodiment, the chuck 4 is a hydraulic chuck, which is controlled by a hydraulic cylinder 17 to clamp the workpiece, and the center 7 is a hydraulic center, which is controlled by a hydraulic station 18 set on the bed 1 to fix the workpiece.

[0022] When the lathe is working, the hydraulic chuck clamps the upper end of the workpiece through the action of the hydraulic cylinder 17. The position of the center slide plate 6 is adjusted according to the length of the workpiece through the center Z guide rail 5. The hydraulic center has a stroke of 50mm. After the position is adjusted, the position of the center slide plate 6 is fixed. The hydraulic station 18 works, and the hydraulic center moves upward to hold and fix the workpiece. The rear electric spindle 3 drives the spindle unit 2 to rotate the workpiece for turning.

[0023] Z-axis servo motor 15 drives slide saddle 10 to move along Z-axis direction on Z-axis guide rail 8 via Z-axis lead screw 9, thereby driving servo turret 14 to move up and down along Z-axis direction; X-axis servo motor 16 drives slide plate 13 to move along X-axis direction on X-axis guide rail 11 via X-axis lead screw 12, thereby driving servo turret 14 to move left and right along X-axis direction. The tool holder and tool bar mounted on servo turret 14 cooperate with the rotating spindle unit 2 on the other side to complete workpiece turning.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0026] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An inverted lathe for machining a shaft-like piece, characterized by, Includes bed (1), spindle unit (2), rear electric spindle (3), chuck (4), center Z guide rail (5), center slide (6), center (7), Z-axis guide rail (8), Z-axis lead screw (9), slide saddle (10), X-axis guide rail (11), X-axis lead screw (12), slide (13), servo turret (14), Z-axis servo motor (15), X-axis servo motor (16); The spindle unit (2) is mounted on the bed (1). The spindle unit (2) is equipped with a chuck (4) for clamping the workpiece. The center Z-axis guide rail (5) is fixedly mounted on the bed (1). The center (7) is mounted on the center slide (6). The center slide (6) is connected to the center Z-axis guide rail (5) to make the center (7) move along the Z-axis and cooperate with the chuck (4) to fix the workpiece. The rear electric spindle (3) is used to drive the spindle unit (2) to rotate the workpiece for turning. The Z-axis guide rail (8) is mounted on the bed (1) and connected to the slide saddle (10) via the Z-axis lead screw (9). The X-axis guide rail (11) is mounted on the slide saddle (10) and connected to the slide plate (13) via the X-axis lead screw (12). A servo turret (14) is mounted on the slide plate (13). The Z-axis servo motor (15) drives the slide saddle (10) to move along the Z-axis direction, and the X-axis servo motor (16) drives the slide plate (13) to move along the X-axis direction. This is used to control the servo turret (14) to move along the Z-axis and X-axis directions, and to cooperate with the spindle unit (2) to complete the workpiece turning.

2. The inverted lathe for machining a shaft-like piece according to claim 1, characterized in that, The chuck (4) is a hydraulic chuck, which is controlled by a hydraulic cylinder (17) to clamp the workpiece. The center (7) is a hydraulic center, which is controlled by a hydraulic station (18) set on the bed (1) to fix the workpiece.

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