Screw rod supporting mechanism for numerical control lathe for machining large steamship diesel engine cylinder sleeve

Abstract

The utility model discloses a lead screw supporting mechanism for a numerical control lathe for processing a large steamship diesel engine cylinder sleeve, which comprises a middle towing hook fixedly connected with a lead screw nut, two supporting parts matched with the middle towing hook and a middle towing hook parking bracket matched with the supporting parts, the two supporting parts are located on the two sides of the middle towing hook, and the middle towing hook parking support is used for achieving unhooking of the supporting parts and the middle towing hook. The screw rod can be effectively supported, deformation of the screw rod in the working process is avoided, and then the machining precision and the machining efficiency of the whole lathe are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerically controlled lathes, and in particular relates to a screw rod supporting mechanism of a numerically controlled lathe for machining cylinder sleeves of large ship diesel engines. Background Art

[0002] Because the diameter of the ship cylinder sleeve is relatively large (800-1200mm) and the length is relatively long, generally 4-5m, it needs to be processed in a variety of ways during the production process. At this time, a large CNC lathe is needed. In the process of using the CNC lathe for processing, the tailstock of the large CNC lathe moves on the lathe, reaches the predetermined position, and completes the positioning before processing. In order to meet the processing requirements, the overall length of large CNC lathes is relatively long, generally more than 10m. Such a long lathe needs to be equipped with a corresponding length of lead screw and guide rail to meet its needs. As we all know, the lead screw is a high-precision component, and the lead screw used for large CNC lathes is relatively long, and the middle part will bend downward under the action of its own gravity, which will cause the lead screw to deform and vibrate during the working process, which will cause the lead screw nut transmission to be unstable, thereby affecting the processing accuracy of the lathe. Utility Model Content

[0003] Technical issues to be solved

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a screw support mechanism for a CNC lathe for processing cylinder liners of large ship diesel engines, which overcomes the shortcomings of the prior art, can effectively support the screw and prevent it from deforming during work, thereby ensuring the processing accuracy and efficiency of the entire lathe.

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides a screw support mechanism for a CNC lathe for processing cylinder liners of large ship diesel engines, comprising a middle tow hook fixedly connected to a screw nut, two support parts for cooperating with the middle tow hook, and a middle tow hook parking bracket for cooperating with the support parts, the two support parts being located on both sides of the middle tow hook, and the middle tow hook parking bracket being used to realize the uncoupling of the support parts and the middle tow hook.

[0007] As a further preferred technical solution of the present utility model, the middle towing hook includes a vertical side plate, a connecting top plate fixedly connected to the vertical side plate, and a pulling hook fixedly connected to the vertical side plate.

[0008] As a further preferred technical solution of the utility model, the end of the pull hook is provided with an upper pull hook inclined surface and a lower pull hook inclined surface.

[0009] As a further preferred technical solution of the present utility model, the support portion includes a support slider, a towing hook hinged on the support slider, and a balancing support column supporting the towing hook.

[0010] As a further preferred technical solution of the utility model, the towing hook includes a towing hook body, a mounting hole arranged on the towing hook body, a lower hook arranged at the end of the towing hook body, and a first lower guide inclined surface arranged between the lower hook and the end surface of the towing hook body, the lower hook is provided with a vertical blocking surface, and the towing hook body is provided with a lower plane intersecting with the vertical blocking surface and a second guide inclined surface intersecting with the lower plane.

[0011] As a further preferred technical solution of the utility model, both ends of the intermediate towing hook parking bracket are provided with a first upper unhooking inclined surface, a unhooking transition plane intersecting with the first upper unhooking inclined surface, and an unhooking groove.

[0012] As a further preferred technical solution of the present utility model, the unhooking transition plane is lower than the upper surface of the middle towing hook parking bracket.

[0013] As a further preferred technical solution of the present utility model, the unhooking groove includes an unhooking outer inclined surface, a unhooking bottom surface and an unhooking inner inclined surface connected to the unhooking transition plane.

[0014] Beneficial Effects

[0015] Compared with the prior art, the utility model can effectively support the screw rod and avoid deformation thereof during operation, thereby ensuring the processing accuracy and processing efficiency of the entire lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the middle towing hook of the utility model;

[0018] Figure 3 for Figure 2 The side view of the structure;

[0019] Figure 4 This is a structural diagram of the support part in the utility model;

[0020] Figure 5 This is a structural diagram of the supporting slider in the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the towing hook in the utility model;

[0022] Figure 7 This is a structural diagram of the intermediate towing hook parking bracket of the utility model;

[0023] Figure 8 For this utility model Figure 7 A partial enlarged view of point A. DETAILED DESCRIPTION

[0024] This specific embodiment is a screw support mechanism for a large ship diesel engine cylinder liner processing CNC lathe, and its structural schematic diagram is shown in FIG. Figure 1-Figure 8 As shown, a screw support mechanism for a CNC lathe for processing cylinder liners of large ship diesel engines comprises a middle towing hook 1 fixedly connected to a screw nut 5, two supporting parts 2 for cooperating with the middle towing hook 1, and an intermediate towing hook parking bracket 3 for cooperating with the supporting parts 2, wherein the two supporting parts 2 are located on both sides of the middle towing hook 1, and the intermediate towing hook parking bracket 3 is used to realize the uncoupling of the supporting parts 2 and the middle towing hook 1; the middle towing hook 1 is fixedly connected to the screw nut and moves with the screw nut, and during the movement, it is always supported by one of the two supporting parts 2, and in the middle position, the middle towing hook parking bracket is used to realize the uncoupling from the supporting part 2, and then the other supporting part supports the middle towing hook to realize the support of the remaining stroke.

[0025] In this embodiment, the middle tow hook 1 includes a vertical side plate 101, a connecting top plate 102 fixedly connected to the vertical side plate 101, and a pull hook 103 fixedly connected to the vertical side plate. Furthermore, the end of the pull hook 103 is provided with an upper pull hook inclined surface and a lower pull hook inclined surface. The middle tow hook 1 is used to cooperate with the support part to realize the support of the support part to the screw rod, thereby ensuring the processing accuracy of the entire lathe.

[0026] Further, the support portion 2 includes a support slider 201, a towing hook 202 hinged on the support slider 201, and a balancing support column 203 supporting the towing hook 202. The towing hook is hinged on the support slider through a hinge shaft. The towing hook 202 includes a towing hook body 2021, a mounting hole 2022 provided on the towing hook body 2021, a lower hook 2023 provided at the end of the towing hook body 2021, and a first lower guide provided between the lower hook 2023 and the end surface of the towing hook body 2021. Inclined surface 2024, the lower hook 2023 is provided with a vertical blocking surface 2025, the towing hook body 2021 is provided with a lower plane intersecting with the vertical blocking surface 2025 and a second guiding inclined surface 2026 intersecting with the lower plane, the hinge shaft is installed in the mounting hole, and the balancing support column can support the towing hook to ensure the stability of the towing hook, and the lower hook cooperates with the pulling hook when the supporting part and the middle towing hook cooperate to ensure support, and then cooperates with the middle towing hook parking bracket to achieve separation when separated.

[0027] Furthermore, the two ends of the intermediate towing hook parking bracket 3 are provided with a first upper unhooking inclined surface 301, a unhooking transition plane 302 intersecting the first upper unhooking inclined surface 301, and a unhooking groove 303, the unhooking transition plane 302 is lower than the upper surface of the intermediate towing hook parking bracket 3, and the unhooking groove 303 includes a unhooking outer inclined surface connected to the unhooking transition plane 302, a unhooking bottom surface and a unhooking inner inclined surface.

[0028] Working principle: The working principle of the utility model is briefly introduced below. Generally, the middle tow hook parking bracket is fixed on the lathe body, and is located in the middle position of the entire screw rod. This position can ensure that the screw rod is supported throughout the entire working stroke, that is, there are support parts in the front half and the rear half. When working, the screw rod nut moves forward. At this time, the lower hook and the pull hook of the tow hook cooperate, and the middle tow hook pushes the support slider of the front support part forward together, and the support slider moves together with it to support the screw rod. At this time, the tow hook located at the rear is disengaged from the lower hook and the pull hook under the action of the middle tow hook parking bracket, and when the middle tow hook reaches the position and needs to return, the support part that was originally pushed away by it in front, when it returns, the lower hook and the pull hook of the tow hook cooperate and are pulled away by the middle tow hook, which can also realize the support for the screw rod until it reaches the position of the middle tow hook parking bracket, and the two are disengaged, and the other support part takes over the support of the remaining stroke.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. The screw support mechanism used in CNC lathes for processing cylinder sleeves of large ship diesel engines is characterized by: The invention comprises a middle towing hook (1) fixedly connected to a screw nut, two supporting parts (2) for cooperating with the middle towing hook (1), and a middle towing hook parking bracket (3) for cooperating with the supporting parts (2), wherein the two supporting parts (2) are located on both sides of the middle towing hook (1), and the middle towing hook parking bracket (3) is used to realize the decoupling of the supporting parts (2) and the middle towing hook (1).

2. The screw support mechanism for a CNC lathe for machining cylinder liners of large ship diesel engines according to claim 1 is characterized in that: The middle towing hook (1) comprises a vertical side plate (101), a connecting top plate (102) fixedly connected to the vertical side plate (101), and a pulling hook (103) fixedly connected to the vertical side plate (101).

3. The screw support mechanism for a CNC lathe for machining cylinder liners of large ship diesel engines according to claim 2 is characterized in that: An upper hook inclined surface and a lower hook inclined surface are provided at the end of the hook (103).

4. The screw support mechanism for a CNC lathe for machining cylinder liners of large ship diesel engines according to claim 2, characterized in that: The support portion (2) comprises a support slider (201), a towing hook (202) hinged on the support slider (201), and a balancing support column (203) supporting the towing hook (202).

5. The screw support mechanism for a CNC lathe for machining a cylinder liner of a large ship diesel engine according to claim 4, characterized in that: The towing hook (202) comprises a towing hook body (2021), a mounting hole (2022) provided on the towing hook body (2021), a lower hook (2023) provided at the end of the towing hook body (2021), and a first lower guide inclined surface (2024) provided between the lower hook (2023) and the end surface of the towing hook body (2021), the lower hook (2023) being provided with a vertical blocking surface (2025), and the towing hook body (2021) being provided with a lower plane intersecting with the vertical blocking surface (2025) and a second guide inclined surface (2026) intersecting with the lower plane.

6. A screw support mechanism for a CNC lathe for machining cylinder liners of large ship diesel engines according to claim 1, 2, 3, 4 or 5, characterized in that: The two ends of the intermediate towing hook parking bracket (3) are provided with a first upper decoupling inclined surface (301), a decoupling transition plane (302) intersecting the first upper decoupling inclined surface (301), and a decoupling groove (303).

7. The screw support mechanism for a CNC lathe for machining a cylinder liner of a large ship diesel engine according to claim 6, characterized in that: The decoupling transition plane (302) is lower than the upper surface of the middle towing hook parking bracket (3).

8. The screw support mechanism for a CNC lathe for machining a cylinder liner of a large ship diesel engine according to claim 7, characterized in that: The decoupling groove (303) comprises a decoupling outer inclined surface, a decoupling bottom surface and a decoupling inner inclined surface connected to the decoupling transition plane (302).

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