Lathe tailstock locking device

Abstract

The utility model relates to the technical field of numerical control machine tool equipment, in particular to a lathe tailstock locking device which comprises an eccentric shaft arranged in a tailstock box body in a rotating structure mode, a locking groove is formed in the peripheral wall of the eccentric shaft, the locking groove is matched with a locking rod to lock the eccentric shaft, the locking rod is arranged in a locking hole in the tailstock box body in a sliding mode, and the locking rod is matched with the locking groove. The eccentric shaft can stretch into the lock hole, the eccentric step of the eccentric shaft is sleeved with a locking sleeve, the lower portion of the locking sleeve is provided with a connecting frame in a fixed structure mode, the lower portion of the connecting frame is provided with a pressing plate in a fixed structure mode, the pressing plate and the connecting frame are provided with two connecting points, the two connecting points are symmetrically arranged on the two sides of the locking sleeve, and the pressing plate is located on the lower portion of the tailstock box body. Through the structural design, two-point locking of the pressing plate can be completed through one eccentric shaft, finally, the pressing plate moves upwards to make contact with the lower surface of the tailstock hard rail, a worker can operate with one hand, the locking rod is only matched with one locking groove in a penetrating and inserting mode, the working efficiency is improved, and the operation process is simplified.

Description

Technical field:

[0001] The present application relates to the technical field of CNC machine tools, and in particular to a tailstock locking device for a lathe. Background technology:

[0002] Chinese utility model patent with application number 202122581379.8 - a machine tool interlocking tailstock, including a tail box, a machine tool slide rail, and an interlocking structure is set in the tail box, the interlocking structure includes a pressure plate, an eccentric shaft, a locking sleeve, a drag rod, a drag handle, and a positioning block, the pressure plate is slidably set at the bottom of the tail box and slidably connected to the machine tool slide rail; the eccentric shaft is set as a stepped shaft, one of the steps is set as an eccentric step, and the eccentric shaft is installed in the tail box; the locking sleeve is sleeved on the eccentric step of the eccentric shaft, and the bottom of the locking sleeve is connected to the pressure plate; the drag rod is transferred to the tail box, the drag rod is set perpendicular to the eccentric shaft and contacts the eccentric shaft, one end of the drag rod is connected to the drag handle, the drag handle is set on the outside of the tail box, and an interlocking structure is set at the contact point between the eccentric shaft and the drag rod.

[0003] The interlocking tailstock of the machine tool uses two eccentric shafts to complete two-point locking. When in use, one person needs to use a tool to rotate the two eccentric shafts at the same time, use the eccentric step to lift the pressure plate through the locking sleeve, and the other person pushes the drag rod into the slot to position the eccentric shaft. The cooperation of two people is required, which greatly limits its use; and the drag rod needs to be inserted and engaged with the slot twice, which is inefficient. Utility model content:

[0004] In order to solve the above technical problems, the present invention provides a lathe tailstock locking device, which solves the technical problem that the locking requires the cooperation of two people, which is inefficient. In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A lathe tailstock locking device, comprising:

[0006] An eccentric shaft is arranged in a rotating structure in the tailstock box, and a locking groove is opened on the outer peripheral wall of the eccentric shaft;

[0007] A locking rod is provided in the tailstock housing, the locking rod cooperates with the locking groove to lock the eccentric shaft;

[0008] A locking sleeve, which is arranged outside the eccentric step of the eccentric shaft;

[0009] A connecting frame, the upper portion of which is connected to the locking sleeve in a fixed structural manner;

[0010] The pressing plate is located at the lower part of the tailstock box, and is connected to the connecting frame in a fixed structure. The pressing plate and the connecting frame have two connection points, and the two connection points are symmetrically arranged on both sides of the locking sleeve.

[0011] Furthermore, sleeves are provided at both ends of the lower portion of the connecting frame in a fixed structural manner, bolts are sleeved in the sleeves, and the other end of the bolt passes through the pressure plate and is provided with a locking nut through threaded engagement.

[0012] Furthermore, the connecting frame is arranged in an inverted T-shaped structure.

[0013] Furthermore, the connecting frame includes a frame body with an inverted Y-shaped structure, horizontal columns are arranged on both sides of the lower part of the frame body in a fixed structure, and the outer sides of the horizontal columns are connected to the sleeve in a fixed structure.

[0014] Furthermore, a pull rod is provided on one side of the locking rod in a fixed structure, a cover plate is sleeved on the outside of the pull rod in a sliding structure, and a return spring is sleeved on the outside of the pull rod between the cover plate and the locking rod.

[0015] Furthermore, one end of the pull rod away from the locking rod passes through the cover plate and is fixedly provided with a pull ring.

[0016] The beneficial effects of the utility model are as follows: through the design of the structure, one eccentric shaft can complete the two-point locking of the pressure plate, and finally the pressure plate moves upward to contact the lower surface of the tailstock hard rail to complete the locking action, so that workers can operate it with one hand, and the locking rod only intersects with one locking groove, thereby improving work efficiency and simplifying the operation process.

[0017] The locking rod is pushed into the locking groove by the compression of the spring. When locking is required, the worker only needs to rotate the eccentric shaft, which improves the fit between the locking rod and the locking groove and reduces labor. Description of the drawings:

[0018] Figure 1 It is a schematic longitudinal section diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a partial structural diagram of the utility model.

[0020] Figure 3 It is a transverse cross-sectional schematic diagram of the three-dimensional structure of the utility model.

[0021] In the picture:

[0022] 1. Tailstock housing, 2. Eccentric shaft, 3. Locking groove, 4. Locking rod, 5. Locking sleeve, 6. Connecting frame, 7. Pressure plate, 8. Sleeve, 9. Bolt, 10. Lock nut, 11. Pull rod, 12. Cover plate, 13. Pull ring. Specific implementation method:

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be described in further detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows:

[0024] The eccentric shaft 2 is provided with a locking groove 3 on the outer peripheral wall of the eccentric shaft 2, and the locking groove 3 cooperates with the locking rod 4 to lock the eccentric shaft 2. The locking rod 4 is slidably arranged in the locking hole in the tailstock box 1, and the eccentric shaft 2 can extend into the locking hole. The eccentric step of the eccentric shaft 2 is provided with a locking sleeve 5 on the outer side. The lower part of the locking sleeve 5 is provided with a connecting frame 6 in a fixed structure. The lower part of the connecting frame 6 is provided with a pressure plate 7 in a fixed structure. The pressure plate 7 and the connecting frame 6 have two connection points. The two connection points are symmetrically arranged on both sides of the locking sleeve 5. The pressure plate 7 is located at the lower part of the tailstock box 1. Through the design of this structure, one eccentric shaft can complete the two-point locking of the pressure plate, and finally the pressure plate moves upward to contact the lower surface of the tailstock hard rail to complete the locking action, which realizes that the worker can operate it with one hand, and the locking rod only cooperates with one locking groove, which improves work efficiency and simplifies the operation process.

[0025] Specifically, sleeves 8 are provided at both ends of the lower portion of the connecting frame 6 in a fixed structure manner, a bolt 9 is sleeved inside the sleeve 8, and the other end of the bolt 9 passes through the pressure plate 7 and is provided with a locking nut 10 through threaded engagement.

[0026] In one embodiment, the connecting frame 6 is provided in an inverted T-shaped structure for easy processing.

[0027] In another embodiment, the connecting frame 6 includes a frame body 61 with an inverted Y-shaped structure, and horizontal columns 62 are provided on both sides of the lower part of the frame body 61 in a fixed structure manner. The outer side of the horizontal column 62 is connected to the sleeve 8 in a fixed structure manner, and the force form is more reasonable.

[0028] It should be noted that a pull rod 11 is provided on one side of the locking rod 4 in a fixed structure manner, and a cover plate 12 is sleeved on the outside of the pull rod 11 in a sliding structure manner. A return spring is sleeved on the outside of the pull rod 11 between the cover plate 12 and the locking rod 4. The locking rod 4 is pushed into the locking groove 3 by the compression of the spring. When locking is required, the worker only needs to rotate the eccentric shaft 2, which improves the fit between the locking rod 4 and the locking groove 3 and reduces labor.

[0029] It should be explained that a pull ring 13 is fixedly provided on the end of the pull rod 11 away from the locking rod 4 through the cover plate 12. By pulling the pull ring 13, the locking rod 4 is driven to move outward through the pull rod 11, causing the spring to be compressed. At this time, the eccentric shaft 2 is rotated to rotate the locking slot 3 to one side to release the lock.

[0030] The working principle and working process of this utility model are as follows:

[0031] When locking is required, the worker rotates the eccentric shaft 2, and the eccentric step of the eccentric shaft 2 drives the locking sleeve 5 to move upward. The locking sleeve 5 drives the pressure plate 7 to move upward through the connecting frame 6 and contact the lower surface of the tailstock hard rail to complete the locking action. At this time, the locking rod 4 is subjected to the elastic force of the spring, and its free end penetrates the locking groove 3 to lock the eccentric shaft 2, completing the operation.

[0032] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described based on a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the present invention described herein.

Claims

1. A lathe tailstock locking device, characterized in that: include: An eccentric shaft (2) is arranged in a rotating structure in a tailstock housing (1), and a locking groove (3) is provided on an outer peripheral wall of the eccentric shaft (2); A locking rod (4) is arranged in the tailstock housing (1), and the locking rod (4) cooperates with the locking groove (3) to lock the eccentric shaft (2); A locking sleeve (5), the locking sleeve (5) is arranged outside the eccentric step of the eccentric shaft (2); A connecting frame (6), the upper portion of which is connected to the locking sleeve (5) in a fixed structural manner; A pressing plate (7) is located at the lower part of the tailstock box (1), and the pressing plate (7) is connected to the connecting frame (6) in a fixed structure. The pressing plate (7) and the connecting frame (6) have two connection points, and the two connection points are symmetrically arranged on both sides of the locking sleeve (5).

2. The lathe tailstock locking device according to claim 1, characterized in that: Sleeves (8) are provided at both ends of the lower portion of the connecting frame (6) in a fixed structure manner, a bolt (9) is sleeved in the sleeve (8), and the other end of the bolt (9) passes through the pressure plate (7) and is provided with a locking nut (10) in a threaded engagement manner.

3. The lathe tailstock locking device according to claim 2, characterized in that: The connecting frame (6) is arranged in an inverted T-shaped structure.

4. The lathe tailstock locking device according to claim 2, characterized in that: The connecting frame (6) comprises a frame body (61) with an inverted Y-shaped structure. Horizontal columns (62) are provided on both sides of the lower portion of the frame body (61) in a fixed structure. The outer sides of the horizontal columns (62) are connected to the sleeve (8) in a fixed structure.

5. The lathe tailstock locking device according to claim 1, characterized in that: A pull rod (11) is provided on one side of the locking rod (4) in a fixed structure manner, a cover plate (12) is sleeved on the outside of the pull rod (11) in a sliding structure manner, and a return spring is sleeved on the outside of the pull rod (11) between the cover plate (12) and the locking rod (4).

6. The lathe tailstock locking device according to claim 5, characterized in that: One end of the pull rod (11) away from the locking rod (4) passes through the cover plate (12) and is fixedly provided with a pull ring (13).

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