Horizontal lathe

Abstract

The utility model relates to the field of horizontal lathe tools, in particular to a horizontal lathe. Comprising a machine tool, a turning tool assembly arranged on the machine tool and used for turning a workpiece and a clamping assembly used for clamping the workpiece, a center frame is installed on the machine tool, the center frame is composed of a lower frame body, an upper frame body, a second supporting ejector rod and two first supporting ejector rods, and a synchronous adjusting assembly for adjusting the two first supporting ejector rods to move in the radial direction at the same time is arranged on the center frame. The synchronous adjusting device has the advantages that the synchronous adjusting assembly is arranged to drive the two first supporting ejector rods at the bottom to feed at the same time, it is guaranteed that the abutting force of the two first supporting ejector rods at the bottom to workpieces is consistent all the time, and the machining precision of the workpieces is guaranteed to a certain degree.

Description

Technical Field

[0001] The utility model relates to the field of horizontal lathe tools, in particular to a horizontal lathe. Background Technique

[0002] The horizontal lathe can perform various machining processes on various types of workpieces such as shafts, discs, and rings. It is commonly used for machining the inner and outer rotary surfaces, end faces, and various internal and external threads of workpieces. With corresponding tools and accessories, it can also perform drilling, reaming, tapping, knurling, etc. The ordinary lathe is the most widely used type of lathe, accounting for about 65% of the total number of lathes. Because its main shaft is placed horizontally, it is called a horizontal lathe. The accessories of the horizontal lathe are often used in combination with a steady rest to support the workpiece to prevent the workpiece from bending or deflecting. The existing steady rest consists of a circular support and three support rods that can move radially. The three support rods are evenly distributed in the circular support, and the two support rods at the bottom play the role of bearing the gravity and load of the workpiece. However, the existing movement mode of the three support rods is realized by manually rotating the screw for feeding, and the two support rods at the bottom cannot move simultaneously, resulting in uneven tightening force on the workpiece, which is likely to cause uneven clamping force components, causing the workpiece to bend and deflect during machining, and reducing the machining accuracy. Summary of the Invention

[0003] The technical problem to be solved by the utility model is as follows: The existing steady rest consists of a circular support and three support rods that can move radially. The three support rods are evenly distributed in the circular support, and the two support rods at the bottom play the role of bearing the gravity and load of the workpiece. However, the existing movement mode of the three support rods is realized by manually rotating the screw for feeding, and the two support rods at the bottom cannot move simultaneously, resulting in uneven tightening force on the workpiece, which is likely to cause uneven clamping force components, causing the workpiece to bend and deflect during machining, and reducing the machining accuracy.

[0004] To solve the above problems, the technical solution adopted by the utility model is: A horizontal lathe, including a machine tool, a turning tool assembly provided on the machine tool for turning workpieces, and a clamping assembly for clamping workpieces. A steady rest is installed on the machine tool. The steady rest consists of a lower frame body, an upper frame body, a support top rod two, and two support top rod ones. A synchronous adjustment assembly for simultaneously adjusting the radial movement of the two support top rod ones is provided on the steady rest.

[0005] The beneficial effect of the utility model is: The synchronous adjustment assembly is set to drive the two support top rod ones at the bottom to feed simultaneously, ensuring that the abutting forces of the two support top rod ones on the workpiece are always consistent, and to a certain extent, ensuring the machining accuracy of the workpiece.

[0006] As a further improvement of the utility model, the technical problem to be solved is: Specifically how to synchronously adjust the two support top rod ones.

[0007] To solve the above technical problems, the technical solution further improved by the present utility model is as follows: The synchronous adjustment assembly includes two screws threadedly connected to the corresponding support ejector rod 1 and driven bevel gears fixedly sleeved on the screws. An installation plate is provided on the bottom plate of the lower frame body. A transmission gear is rotatably provided on the installation plate. A driving bevel gear meshing with the corresponding driven bevel gear is fixedly sleeved on the installation shaft of the transmission gear. An annular plate concentric with and meshing with the two driving bevel gears is rotatably provided outside the lower frame body and the upper frame body.

[0008] The beneficial effects produced by the above improvement are as follows: By rotating the annular plate meshing and driving with the transmission gear, the driving bevel gear coaxial with the transmission gear is driven to rotate, and then the driven bevel gear is driven to rotate, and then the screw is continuously rotated. Since the support ejector rod 1 is in a sliding relationship with the lower frame body and the support ejector rod 1 is threadedly connected to the screw, when the screw rotates, the support ejector rod 1 slides in the lower frame body and moves towards the workpiece.

[0009] The technical solution further improved by the present utility model is as follows: The annular plate is specifically composed of two semi-annular plates with a plurality of tooth grooves spliced together. A T-shaped block is provided at the butt joint end of one semi-annular plate, and a T-shaped slot for inserting the T-shaped block is provided at the butt joint end of the other semi-annular plate.

[0010] The beneficial effects produced by the above improvement are as follows: The annular plate is changed into two spliced semi-annular plates, which is convenient for installing the center frame with the synchronous adjustment assembly on the machine tool and sleeving it outside the workpiece.

[0011] The technical solution further improved by the present utility model is as follows: Guide strips are axially provided on the outer surface of the support ejector rod 1, and guide strip grooves cooperating with the guide strips are provided in the upper frame body.

[0012] The beneficial effects produced by the above improvement are as follows: By using the cooperation between the guide strips and the guide strip grooves, it is ensured that the support ejector rod 1 slides radially in the lower frame body.

[0013] The technical solution further improved by the present utility model is as follows: A concentric guide sliding plate is provided on the inner side of one of the semi-annular plates, and guide sliding grooves cooperating with the guide sliding plate are provided on the lower frame body and the upper frame body.

[0014] The beneficial effects produced by the above improvement are as follows: By using the cooperation between the sliding plate and the guide sliding grooves, it is ensured that the two semi-annular plates slide on the center frame. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a structural diagram of the center frame in the present utility model;

[0017] Figure 3Schematic diagram of the connection relationship between the synchronous adjustment component and the steady rest in the present utility model;

[0018] Figure 4 Schematic diagram of the connection relationship between the synchronous adjustment component and the first supporting ejector rod in the present utility model;

[0019] Figure 5 Schematic diagram of the connection relationship between the first supporting ejector rod and the screw rod in the present utility model.

[0020] The text markings in the figure are indicated as follows: 1. Machine tool; 2. Turning tool assembly; 3. Clamping assembly; 4. Steady rest; 5. First supporting ejector rod; 6. Second supporting ejector rod; 7. Screw rod; 8. Driven bevel gear; 9. Driving bevel gear; 10. Transmission gear; 11. Semi-circular ring plate; 12. Guide sliding plate; 13. Mounting plate; 41. Lower frame body; 42. Upper frame body. Detailed implementation manners

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0022] Embodiment 1:

[0023] As Figures 1-5 , a horizontal lathe includes a machine tool 1, a turning tool assembly 2 provided on the machine tool 1 for turning a workpiece, and a clamping assembly 3 for clamping the workpiece. The turning tool assembly 2 and the clamping assembly 3 are both prior arts and will not be elaborated here. A steady rest 4 is installed on the machine tool 1. The steady rest 4 is composed of a lower frame body 41, an upper frame body 42, a second supporting ejector rod 6, and two first supporting ejector rods 5. After the lower frame body 41 and the upper frame body 42 are butted, they are fixed by connecting bolts. The feeding method of the second supporting ejector rod 6 moving radially is a prior art and will not be elaborated here. A synchronous adjustment component for simultaneously adjusting the two first supporting ejector rods 5 to move radially is provided on the steady rest 4. The synchronous adjustment component is set to drive the two first supporting ejector rods 5 at the bottom to feed simultaneously, ensuring that the abutting forces of the two first supporting ejector rods 5 at the bottom on the workpiece are always consistent, and to a certain extent, ensuring the machining accuracy of the workpiece.

[0024] Embodiment 2:

[0025] Basically the same as the technical solution of Embodiment 1, the difference is that, as Figures 2-5As shown in the figure, the synchronous adjustment component includes two screw rods 7 threadedly connected to the corresponding supporting ejector rod 1-5 and driven bevel gears 8 fixedly sleeved on the screw rods 7. An installation plate 13 is provided on the bottom plate of the lower frame body 41. A transmission gear 10 is rotatably provided on the installation plate 13. A driving bevel gear 9 meshing with the corresponding driven bevel gear 8 is fixedly sleeved on the installation shaft of the transmission gear 10. An annular plate meshing with the two driving bevel gears 9 concentrically is rotatably provided outside the lower frame body 41 and the upper frame body 42. The annular plate is specifically composed of two semi-annular plates 11 provided with a plurality of tooth grooves spliced together. A T-shaped block is provided at the butt joint end of one semi-annular plate 11, and a T-shaped slot inserted with the T-shaped block is provided at the butt joint end of the other semi-annular plate 11. By rotating the annular plate meshing and driving with the transmission gear 10, the driving bevel gear 9 coaxial with the transmission gear 10 is driven to rotate, and then the driven bevel gear 8 is driven to rotate, and then the screw rod 7 is continuously rotated. Since the supporting ejector rod 1-5 is in a sliding relationship with the lower frame body 41 and the supporting ejector rod 1-5 is in a threaded connection with the screw rod 7, when the screw rod 7 rotates, the supporting ejector rod 1-5 is driven to slide in the lower frame body 41 and move towards the workpiece. The annular plate is changed into two spliced semi-annular plates 11, which is convenient for installing the center rest 4 with the synchronous adjustment component on the machine tool 1 and sleeving it outside the workpiece.

[0026] Embodiment 3:

[0027] It is basically the same as the technical solution of Embodiment 1, except that, as Figure 5 shown, a guiding strip is axially provided on the outer surface of the supporting ejector rod 1-5, and a guiding strip groove matching with the guiding strip is provided in the upper frame body 42. By using the cooperation between the guiding strip and the guiding strip groove, it is ensured that the supporting ejector rod 1-5 slides radially in the lower frame body 41.

[0028] Embodiment 4:

[0029] It is basically the same as the technical solution of Embodiment 1, except that, as Figure 4 shown, a concentric guiding sliding plate 12 is provided on the inner side of one semi-annular plate 11, and guiding sliding grooves matching with the guiding sliding plate 12 are provided on the lower frame body 41 and the upper frame body 42. By using the cooperation between the guiding sliding plate 12 and the guiding sliding grooves, it is ensured that the two semi-annular plates 11 slide on the center rest 4.

[0030] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] In this text, specific examples are used to illustrate the principle and implementation mode of the present utility model. The description of the above examples is only for helping to understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, retouches or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A horizontal lathe, characterized in that: The invention comprises a machine tool (1), a turning tool assembly (2) for turning a workpiece and a clamping assembly (3) for clamping the workpiece, the machine tool (1) being mounted with a center frame (4), the center frame (4) being composed of a lower frame body (41), an upper frame body (42), a second supporting push rod (6) and two first supporting push rods (5), the center frame (4) being provided with a synchronous adjustment assembly for simultaneously adjusting the radial movement of the two first supporting push rods (5), the synchronous adjustment assembly comprising a plurality of corresponding The support top rod (5) is threadedly connected to two screw rods (7) and a driven bevel gear (8) fixedly sleeved on the screw rods (7); a mounting plate (13) is provided on the bottom plate of the lower frame body (41); a transmission gear (10) is rotatably provided on the mounting plate (13); a driving bevel gear (9) meshing with the corresponding driven bevel gear (8) is fixedly sleeved on the mounting shaft of the transmission gear (10); and a ring plate coaxially meshing with the two driving bevel gears (9) is rotatably provided outside the lower frame body (41) and the upper frame body (42).

2. A horizontal lathe according to claim 1, characterized in that: The ring plate is specifically composed of two semicircular ring plates (11) provided with a plurality of tooth grooves, wherein a T-shaped clamping block is provided at a butt joint end of one of the semicircular ring plates (11), and a T-shaped clamping groove for plugging into the T-shaped clamping block is provided at a butt joint end of the other semicircular ring plate (11).

3. A horizontal lathe according to claim 1, characterized in that: A guide bar is provided on the outer surface of the supporting top rod (5) along the axial direction, and a guide bar groove cooperating with the guide bar is provided in the upper frame body (42).

4. A horizontal lathe according to claim 2, characterized in that: A concentric guide slide plate (12) is provided on the inner side of one of the semicircular ring plates (11), and guide slide grooves cooperating with the guide slide plate (12) are provided on the lower frame body (41) and the upper frame body (42).

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