Lathe tailstock displacement structure

Abstract

The utility model belongs to the technical field of numerical control lathes, and particularly relates to a lathe tailstock displacement structure which comprises hydraulic cylinders and further comprises an adapter plate, the two hydraulic cylinders are symmetrically fixed to the two sides of a lathe tailstock, and the adapter plate is fixed to the ends of piston rods of the two hydraulic cylinders. The fixing rod is fixed to the middle of the adapter plate and used for being connected with a lathe center and driving the lathe center to move. According to the utility model, through synchronous driving of the two hydraulic cylinders, stable operation can be realized in a high-load application scene, and the hydraulic cylinders are fixed on the side surface of the lathe tailstock, so that on one hand, the problem of inconvenience in maintenance during built-in installation is effectively avoided; and on the other hand, the problem that the stability is poor when the hydraulic cylinder is fixed to the tail end of the lathe tailstock is solved.

Description

Technical Field

[0001] This utility model belongs to the field of CNC lathe technology, specifically relating to a lathe tailstock shifting structure. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. They are mainly used for cutting the inner and outer cylindrical surfaces, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other operations. The tailstock is an important component of the lathe, and its main function is to fix shaft parts.

[0003] Currently, there are three main types of drives for the tailstock center of a lathe: hand-cranked, pneumatic, and hydraulic. One end of the shaft-like part is fixed by the lathe chuck, while the center is used to hold the other end of the shaft-like part in place, thus securing the shaft-like part in conjunction with the chuck.

[0004] A search of existing technology revealed a Chinese utility model patent with authorization announcement number CN220144787U, which discloses "a hydraulic tailstock sleeve device for a CNC lathe," comprising: a tailstock base plate; a tailstock body disposed on the tailstock base plate; a sliding groove formed on the tailstock body; a tailstock sleeve slidably mounted on the inner wall of the sliding groove; a hydraulic telescopic mechanism disposed on the inner wall of the sliding groove, the hydraulic telescopic mechanism being used to control the forward and backward movement of the tailstock sleeve; a connecting locking mechanism disposed on the hydraulic telescopic mechanism; and a driving mechanism disposed on the connecting locking mechanism.

[0005] Hydraulically driven tailstocks in existing technologies, including those mentioned above, are driven by a single hydraulic cylinder. While they can meet the needs of general machining operations, they are difficult to adapt to high-load application scenarios, and the thrust of the hydraulic cylinder is prone to instability.

[0006] To address the aforementioned problems, this application proposes a lathe tailstock displacement structure. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a lathe tailstock shifting structure, which is convenient to use and has high stability.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lathe tailstock shifting structure, including a hydraulic cylinder, and further comprising:

[0009] The adapter plate is fixed to the piston rod ends of the two hydraulic cylinders, which are symmetrically fixed to both sides of the tailstock of the lathe.

[0010] A fixing rod is fixed to the middle of the adapter plate and is used to connect to and drive the lathe center to move.

[0011] As a preferred technical solution of this utility model, it also includes:

[0012] Adjusting nuts have external threads on the fixing rod, and adjusting nuts are distributed on both sides of the adapter plate and installed on the fixing rod by means of thread engagement.

[0013] As a preferred embodiment of this utility model, it further includes an auxiliary fixing mechanism, and the auxiliary fixing mechanism includes:

[0014] A steel plate, which is fixed between the piston rods of the two hydraulic cylinders.

[0015] As a preferred embodiment of this utility model, the auxiliary fixing mechanism further includes:

[0016] The locking bolts are provided in two symmetrically distributed steel plates, and each steel plate has an arc-shaped groove on its opposite side. The locking bolts penetrate the steel plates.

[0017] A locking nut is installed on the protruding end of the locking bolt by means of thread engagement.

[0018] As a preferred technical solution of this utility model, it also includes:

[0019] An anti-slip rubber pad is bonded and fixed to the inner wall of the arc-shaped groove.

[0020] As a preferred technical solution of this utility model, it also includes:

[0021] A limiting box has a through hole on the adapter plate, and the limiting box is fixed on the adapter plate at the position corresponding to the through hole;

[0022] A connecting plate is located inside the limiting box, and the piston rod of the hydraulic cylinder is fixedly connected to the connecting plate;

[0023] A guide rod is fixed inside the limiting box and passes through the connecting plate. A limiting plate is fixed on the protruding end of the guide rod.

[0024] Balance springs are distributed between the inner wall of the limiting box and the connecting plate, and between the connecting plate and the limiting plate, and are sleeved on the guide rod.

[0025] In a preferred embodiment of this utility model, the outer wall of the connecting plate abuts against the inner wall of the limiting box.

[0026] As a preferred technical solution of this utility model, it also includes:

[0027] A hydraulic balance valve, which is fixed on the hydraulic cylinder.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] In this invention, two hydraulic cylinders are driven synchronously, which can ensure stable operation even in high-load application scenarios. Furthermore, the hydraulic cylinders are fixed to the side of the lathe tailstock, which effectively avoids the problem of inconvenient maintenance when the installation is built-in, and also avoids the problem of poor stability when the hydraulic cylinders are fixed to the tail end of the lathe tailstock.

[0030] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0034] Figure 3 This is an enlarged structural diagram of the auxiliary fixing mechanism in this utility model;

[0035] Figure 4 This is a partial cross-sectional view of the adapter plate in this utility model.

[0036] In the diagram: 1. Hydraulic cylinder; 2. Hydraulic balance valve; 3. Adapter plate; 31. Through hole; 4. Fixing rod; 5. Adjusting nut; 6. Auxiliary fixing mechanism; 61. Steel plate; 611. Arc-shaped clamping groove; 612. Anti-slip rubber pad; 62. Locking bolt; 63. Locking nut; 7. Limit box; 8. Connecting plate; 9. Guide rod; 91. Limit plate; 10. Balance spring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figures 1-4 The present invention provides the following technical solution: a lathe tailstock shifting structure, including a hydraulic cylinder 1, and also including an adapter plate 3 and a fixing rod 4.

[0039] Furthermore, by Figure 1 As shown in this embodiment, two hydraulic cylinders 1 are symmetrically fixed on both sides of the lathe tailstock, the adapter plate 3 is fixed to the piston rod ends of the two hydraulic cylinders 1, and the fixing rod 4 is fixed to the middle of the adapter plate 3, which is used to connect and drive the lathe center to move. With the above solution, when in use, the two hydraulic cylinders 1 are symmetrically fixed on both sides of the lathe tailstock, the lathe center is connected to the fixing rod 4, and is synchronously driven by the two hydraulic cylinders 1, which can also operate stably in high-load application scenarios.

[0040] It should be noted that for the design of a conventional single hydraulic cylinder 1, the hydraulic cylinder 1 is usually fixed to the inner side or the outer wall of the tailstock of the lathe. When the hydraulic cylinder 1 is fixed to the inner side of the tailstock of the lathe, because the hydraulic cylinder 1 is internally installed, although the stability of the hydraulic cylinder 1 can be guaranteed, the connection of the hydraulic oil pipe and the maintenance of the hydraulic cylinder 1 are more troublesome. When the hydraulic cylinder 1 is fixed to the outer wall of the tailstock of the lathe, although the connection of the hydraulic oil pipe and the maintenance of the hydraulic cylinder 1 are convenient, the hydraulic cylinder 1 is in a suspended state, and the stability is poor. Especially for high-load application scenarios, the hydraulic cylinder 1 is prone to vibration during operation.

[0041] The two hydraulic cylinders 1 of this utility model are symmetrically fixed on both sides of the tailstock of the lathe, with a high degree of fit, which is beneficial for the connection of hydraulic oil pipes and the maintenance of hydraulic cylinders 1, and can also ensure the stability of hydraulic cylinders 1.

[0042] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: adjusting nuts 5, which have external threads on the fixing rod 4, and adjusting nuts 5 are distributed on both sides of the adapter plate 3 and installed on the fixing rod 4 by thread engagement. With the above solution, the present invention uses two adjusting nuts 5 to install and fix the fixing rod 4, which is convenient to install and has high stability. Furthermore, by rotating the two adjusting nuts 5, the initial position of the fixing rod 4 can be adjusted, thereby adjusting the initial position of the lathe center.

[0043] Preferably, by Figures 1-3 As shown, in this embodiment, an auxiliary fixing mechanism 6 is also included, and the auxiliary fixing mechanism 6 includes a steel plate 61, which is fixed between the piston rods of the two hydraulic cylinders 1. With the above solution, the present invention uses a steel plate 61 to connect the piston rods of the two hydraulic cylinders 1 to ensure that the two hydraulic cylinders 1 move synchronously.

[0044] Optionally, by Figures 1-3 As shown in this embodiment, the auxiliary fixing mechanism 6 further includes a locking bolt 62 and a locking nut 63. Two steel plates 61 are symmetrically distributed, and arc-shaped clamping grooves 611 are provided on the opposite surfaces of the two steel plates 61. The locking bolt 62 passes through the steel plate 61, and the locking nut 63 is installed on the protruding end of the locking bolt 62 by thread engagement. With the above solution, the present invention uses the locking bolt 62 and the locking nut 63 to fix the two steel plates 61 and clamp the piston rods of the two hydraulic cylinders 1 between the two steel plates 61, which is convenient to install and has high stability.

[0045] Preferably, by Figures 1-3 As shown, this embodiment also includes: an anti-slip rubber pad 612, which is bonded and fixed to the inner wall of the arc-shaped clamping groove 611. The anti-slip rubber pad 612 is flexible. When the two steel plates 61 clamp the piston rods of the two hydraulic cylinders 1, the anti-slip rubber pad 612 will shrink, which further improves the stability.

[0046] Preferably, by Figure 1 and Figure 4 As shown, this embodiment also includes: a limiting box 7, a connecting plate 8, a guide rod 9, and a balance spring 10. The adapter plate 3 has a through hole 31. The limiting box 7 is fixed on the adapter plate 3 at the position corresponding to the through hole 31. The connecting plate 8 is located inside the limiting box 7. The piston rod of the hydraulic cylinder 1 is fixedly connected to the connecting plate 8. The guide rod 9 is fixed inside the limiting box 7 and passes through the connecting plate 8. A limiting plate 91 is fixed on the extended end of the guide rod 9. Balance springs 10 sleeved on the guide rod 9 are distributed between the inner wall of the limiting box 7 and the connecting plate 8, and between the connecting plate 8 and the limiting plate 91. With the above solution, at the moment when the two hydraulic cylinders 1 drive the lathe center to abut against the workpiece, the balance spring 10 will elastically extend and retract until the balance spring 10 is fully compressed. The lathe center firmly abuts against the workpiece, which has a buffering effect and can effectively prevent the lathe center from directly impacting the workpiece and causing mechanical damage.

[0047] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, the outer wall of the connecting plate 8 abuts against the inner wall of the limiting box 7, further improving the stability of the connecting plate 8.

[0048] Preferably, by Figure 1 As shown, this embodiment also includes a hydraulic balance valve 2, which is fixed on the hydraulic cylinder 1. When in use, the hydraulic balance valve 2 is connected to the hydraulic cylinder 1 via a hydraulic oil pipe. On the one hand, it can control the flow rate of the hydraulic cylinder 1 to ensure that the oil is output at a certain speed and force. On the other hand, the hydraulic balance valve 2 can also control the pressure of the hydraulic cylinder 1 to ensure the stability and reliability of the system.

[0049] The hydraulic balance valve 2 is a very common device in hydraulic systems. The working principle of the hydraulic balance valve 2 has been fully disclosed in the existing technology, and will not be elaborated further in this article.

[0050] It should be noted that the hydraulic cylinder 1 and the hydraulic balance valve 2 are both commercially available conventional equipment. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0051] Components not described in detail in this article are existing technologies.

[0052] The working principle and usage process of this utility model: In use, the hydraulic displacement structure of this utility model has two hydraulic cylinders 1 symmetrically fixed on both sides of the lathe tailstock, and the lathe tip is connected to the fixed rod 4. It is driven synchronously by the two hydraulic cylinders 1, and can operate stably even in high-load application scenarios.

[0053] In addition, two hydraulic cylinders 1 are symmetrically fixed on both sides of the lathe tailstock. On the one hand, this effectively avoids the problem of inconvenient maintenance when the internal installation is installed. On the other hand, it avoids the problem of poor stability when the hydraulic cylinder 1 is fixed to the tail end of the lathe tailstock.

[0054] A hydraulic balance valve 2 is installed on the hydraulic cylinder 1. When in use, the hydraulic balance valve 2 is connected to the hydraulic cylinder 1 through a hydraulic oil pipe. On the one hand, it can control the flow rate of the hydraulic cylinder 1 to ensure that the oil is output at a certain speed and force. On the other hand, the hydraulic balance valve 2 can also control the pressure of the hydraulic cylinder 1 to ensure the stability and reliability of the system.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lathe tailstock shifting structure, including a hydraulic cylinder (1), characterized in that, Also includes: The adapter plate (3) is fixed symmetrically on both sides of the tailstock of the lathe, and the adapter plate (3) is fixed to the piston rod ends of the two hydraulic cylinders (1). The fixing rod (4) is fixed to the middle part of the adapter plate (3) and is used to connect and drive the lathe center to move.

2. The lathe tailstock shifting structure according to claim 1, characterized in that: Also includes: Adjusting nuts (5) have external threads on the fixing rod (4), and adjusting nuts (5) are distributed on both sides of the adapter plate (3) and installed on the fixing rod (4) by thread engagement.

3. The lathe tailstock shifting structure according to claim 1, characterized in that: It also includes an auxiliary fixing mechanism (6), and the auxiliary fixing mechanism (6) includes: A steel plate (61) is fixed between the piston rods of the two hydraulic cylinders (1).

4. The lathe tailstock shifting structure according to claim 3, characterized in that: The auxiliary fixing mechanism (6) also includes: Locking bolt (62), two of the steel plates (61) are symmetrically distributed, and arc-shaped grooves (611) are provided on the opposite surfaces of the two steel plates (61), and the locking bolt (62) penetrates the steel plate (61); A locking nut (63) is installed on the protruding end of the locking bolt (62) by means of thread engagement.

5. The lathe tailstock shifting structure according to claim 4, characterized in that: Also includes: Anti-slip rubber pad (612) is bonded and fixed to the inner wall of the arc-shaped groove (611).

6. The lathe tailstock shifting structure according to claim 1, characterized in that: Also includes: The limiting box (7) has a through hole (31) on the adapter plate (3), and the limiting box (7) is fixed on the adapter plate (3) at the position corresponding to the through hole (31); A connecting plate (8) is located inside the limiting box (7), and the piston rod of the hydraulic cylinder (1) is fixedly connected to the connecting plate (8); Guide rod (9), the guide rod (9) is fixed inside the limiting box (7), and the guide rod (9) passes through the connecting plate (8), and a limiting plate (91) is fixed on the extended end of the guide rod (9); Balance springs (10) are distributed between the inner wall of the limiting box (7) and the connecting plate (8) and between the connecting plate (8) and the limiting plate (91), and are sleeved on the guide rod (9).

7. The lathe tailstock shifting structure according to claim 6, characterized in that: The outer wall of the connecting plate (8) abuts against the inner wall of the limiting box (7).

8. The lathe tailstock shifting structure according to claim 1, characterized in that: Also includes: Hydraulic balance valve (2), which is fixed on the hydraulic cylinder (1).

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