Numerical control lathe tailstock stopper

Abstract

The utility model discloses a numerical control lathe tailstock stopper relates to lathe processing technical field. Including lathe bed, the top of lathe bed is slid and is installed with tailstock, and the top one end middle fixed mounting of lathe bed has the first stud for preventing tailstock and is used, the one end below of tailstock is provided with the limiting component for fixing tailstock position, and can adjust the spacing size, the utility model discloses through the base and the first stud fixed, complete the fixation of limiting component, the worm and the screw rod transmission structure push the top rod piece and tailstock welded fixed, form rigid mechanical locking, replace traditional friction brake, rotate the turntable drive worm gear drive, the locking force that the screw rod and fixed plate screw cooperation produces, can resist workpiece top tight counterthrust and centrifugal force, avoid tailstock displacement, need not rely on friction plate, through mechanical structure rigid fixed tailstock, prevent the locking failure caused by brake component wear, reach the effect that prevent tailstock deviation.

Description

Technical Field

[0001] This utility model relates to the field of lathe machining technology, and in particular to a tailstock limiter for CNC lathes. Background Technology

[0002] When machining a workpiece on a CNC lathe, the workpiece is cut by a tool in the middle by fixing both ends and rotating continuously with the spindle, ultimately obtaining a finished product that meets the drawing requirements. In daily machining, the position of the right tailstock on the guide rail should be roughly adjusted and fixed according to the size of the material to be machined. Then, the center should be extended to the left by fine-tuning the handwheel to hold the right side of the material to be machined, thus completing the clamping operation. Therefore, the position of the tailstock must not be moved during the machining process.

[0003] However, in actual operation, the brake device built into the tailstock will gradually wear down due to frequent operation of the handwheel to tighten the center. This causes the brake components, such as the brake pads and linkage screw, to wear down. Because the left side is locked, the tailstock will shift to the right more and more as force is applied. In addition, when the workpiece is irregular in shape or large in size, the centrifugal force generated by its rotation will also cause the tailstock brake to fail to lock and shift to the right. With the daily wear of the tailstock brake, the clamping force on the workpiece on the tailstock will eventually become insufficient, causing the workpiece to be thrown out, damaging the tool holder of the intermediate tool, or even causing serious accidents such as the tool flying out and equipment damage. It may also cause personal injury and economic losses.

[0004] Therefore, it is necessary to invent a tailstock limiter for CNC lathes to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tailstock limiter for CNC lathes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tailstock limiter for a CNC lathe, comprising a machine table, a tailstock slidably mounted on the top of the machine table, a first stud fixedly mounted at the middle of one end of the top of the machine table for preventing the tailstock from detaching, a limiting component for fixing the position of the tailstock and adjustable spacing provided below one end of the tailstock, the limiting component including a base fixedly connected to the first stud, a worm gear rotatably connected to the top of the base, a lead screw fixedly connected to the other end of the worm gear, a fixing plate threadedly connected to the lead screw, a horizontal plate symmetrically welded to one side of the fixing plate, a push rod plate fixedly connected to the end of the horizontal plate, and the push rod plate welded to the tailstock.

[0007] Preferably, the fixed plate has a limiting rod for improving the lateral support strength of the lead screw. One end of the limiting rod is fixedly connected to a limiting block that is slidably connected to the surface of the horizontal plate, and the other end of the limiting block is fixedly connected to a rectangular block that is movably sleeved with the outer peripheral surface of the worm end.

[0008] Preferably, the top two sides of the machine tool table are symmetrically fixedly connected to fixed blocks, the inner side of the fixed blocks is rotatably connected to a horizontal shaft, the horizontal shaft is fixedly connected to a worm gear meshing with a worm, and the end of the horizontal shaft passes through the fixed blocks and is fixedly connected to a turntable.

[0009] Preferably, the fixed plate has symmetrical limit holes at both ends of its outer side surface, and the limit holes are movably connected to the limit rod. The fixed plate has a threaded hole in the middle, and the threaded hole is threadedly connected to the lead screw.

[0010] Preferably, the fixed plate is threaded with second studs on both sides, one end of the second stud is rotatably connected to a connecting block, the end of the connecting block is fixedly connected to a support block, and a pulley is fixedly installed below the end of the support block, the pulley being rotatably connected to the machine tool table.

[0011] Preferably, the machine tool table is included, a chuck is fixedly installed at one top end of the machine tool table, a cutter head is slidably installed on one side of the machine tool table, a tailstock is slidably installed on the top of the machine tool table, a handwheel is provided at one top end of the tailstock, and a center is provided at the other top end of the tailstock.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The limiting component is fixed by fixing the base to the first stud. The worm gear and lead screw transmission structure pushes the top rod plate to weld and fix to the tailstock, forming a rigid mechanical lock, which replaces the traditional friction brake. The rotating turntable drives the worm gear transmission. The locking force generated by the threaded engagement between the lead screw and the fixed plate can resist the counter-thrust force and centrifugal force of the workpiece, and prevent the tailstock from shifting. It does not rely on friction plates. The tailstock is rigidly fixed by the mechanical structure, which eliminates the locking failure caused by the wear of the brake components and achieves the effect of preventing the tailstock from shifting.

[0014] 2. The tailstock position can be precisely adjusted via the threaded transmission between the lead screw and the fixed plate. Compared to the coarse adjustment using a handwheel, the positioning accuracy is improved. The limit rod passes through the fixed plate and is sleeved with the worm gear, moving synchronously with the lead screw rotation, enhancing the lateral support of the lead screw. Simultaneously, after adjustment via the second stud, the pulley slides within the machine tool table slide rail, generating a reaction force. This forms a stable support structure with lead screw transmission and double pulley support, capable of withstanding the centrifugal force generated by workpiece rotation. This ensures that the tailstock does not shift during machining of large cutting volumes or irregular workpieces, preventing equipment damage and safety accidents. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the limiting component of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the fixing plate, the limiting rod, and the lead screw of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the fixing plate and the second stud of this utility model.

[0019] In the diagram: 1. Machine table; 2. Chuck; 3. Tool head; 4. Tailstock; 5. Handwheel; 6. Center; 7. First stud; 8. Base; 9. Worm gear; 10. Worm wheel; 11. Horizontal shaft; 12. Fixing block; 13. Turntable; 14. Rectangular block; 15. Limiting rod; 16. Limiting block; 17. Fixing plate; 1701. Limiting hole; 1702. Threaded hole; 18. Lead screw; 19. Horizontal plate; 20. Push rod plate; 21. Second stud; 22. Connecting block; 23. Support block; 24. Pulley. Detailed Implementation

[0020] 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.

[0021] This utility model provides, for example Figures 1-4 The CNC lathe tailstock limiter shown includes a machine table 1, a tailstock 4 slidably mounted on the top of the machine table 1, a first stud 7 fixedly mounted at the middle of one end of the top of the machine table 1 to prevent the tailstock 4 from disengaging, and a limiting component for fixing the position of the tailstock 4 and adjusting the spacing below one end of the tailstock 4. The limiting component includes a base 8 fixedly connected to the first stud 7, a worm gear 9 rotatably connected to the top of the base 8, and a lead screw 18 fixedly connected to the other end of the worm gear 9. A fixed plate 17 is connected by a threaded connection. A horizontal plate 19 is symmetrically welded to one side of the fixed plate 17. A push rod 20 is fixedly connected to the end of the horizontal plate 19. The push rod 20 is welded to the tailstock 4. The end of the tailstock 4 is fixedly connected to the first stud 7 through the push rod 20, the horizontal plate 19, the threaded rod 18, the fixed plate 17, the worm gear 9, and the base 8, thereby locking the position of the tailstock 4. The position of the tailstock 4 on the machine tool table 1 can be adjusted by the threaded connection between the threaded rod 18 and the fixed plate 17.

[0022] A limiting rod 15 for improving the lateral support strength of the lead screw 18 is movably passed through the fixed plate 17. One end of the limiting rod 15 is fixedly connected to a limiting block 16 that slides on the surface of the horizontal plate 19, and the other end of the limiting rod 15 is fixedly connected to a rectangular block 14 that movably engages with the outer peripheral surface of the end of the worm gear 9. By adding two lateral limiting rods 15 to the fixed plate 17 and rotatably connecting them to the end of the worm gear 9 in conjunction with the rectangular block 14, the limiting rods 15 can move in coordination with the lead screw 18 during rotation, thereby improving the support strength of the lead screw 18.

[0023] Fixed blocks 12 are symmetrically fixedly connected to the top two sides of the machine tool table 1. A horizontal shaft 11 is rotatably connected to the inner side of the fixed block 12. A worm wheel 10 that meshes with the worm 9 is fixedly passed through the horizontal shaft 11. A turntable 13 is fixedly connected to the end of the horizontal shaft 11 through the fixed block 12. By rotating the turntable 13, the worm wheel 10 can be driven to rotate, which in turn drives the worm 9 to rotate, thus achieving the function of convenient adjustment.

[0024] The fixed plate 17 has symmetrical limit holes 1701 at both ends of its outer side surface. The limit holes 1701 and the limit rod 15 pass through each other. The fixed plate 17 has a threaded hole 1702 in the middle. The threaded hole 1702 is threaded to the lead screw 18, thereby improving the convenience of subsequent assembly of various connecting parts. The fixed plate 17 has second studs 21 threaded to both sides. One end of the second stud 21 is rotatably connected to a connecting block 22. The end of the connecting block 22 is fixedly connected to a support block 23. A pulley 24 is fixedly installed below the end of the support block 23. The pulley 24 is rotatably connected to the machine tool table 1. By adjusting the second stud 21, the connecting block 22 is driven to extend outward, thereby moving the support block 23 and the pulley 24. This allows the pulley 24 to slide in the slide rail on the machine tool table 1 and generate an interaction force, thereby improving the stability of the fixed plate 17.

[0025] The machine tool includes a machine table 1, a chuck 2 fixedly mounted on one top end of the machine table 1, a cutter head 3 slidably mounted on one side of the machine table 1, and a tailstock 4 slidably mounted on the top of the machine table 1. A handwheel 5 is provided at one top end of the tailstock 4, and a center 6 is provided at the other top end of the tailstock 4. The main spindle on the machine table 1 is equipped with a chuck 2, which is used to clamp the workpiece. As the spindle rotates, the workpiece to be processed on the chuck 2 rotates synchronously with the spindle. The cutter head 3 is used to install machining tools and can load tools. By changing the corresponding tool, the material is cut into the shape required by the drawing. When machining long shaft parts, the tailstock 4 is used to install the center 6, which serves to fix the other end of the material.

[0026] The working principle of this utility model is as follows: By removing the first stud 7, passing it through the round hole at the bottom of the base 8, and tightening the nut, the base 8 is fixedly connected to the machine tool table 1. Rotating the turntable 13 drives the horizontal shaft 11 and the worm wheel 10 to rotate. The worm wheel 10 meshes with the worm 9 to make it rotate. The worm 9 drives the lead screw 18 to rotate. The lead screw 18 is threadedly engaged with the fixed plate 17, pushing the horizontal plate 19 and the top rod plate 20 to move, so that the tailstock 4 is fixed with the limiting component to achieve position locking. At the same time, when the lead screw 18 rotates, the fixed plate 17 moves along its axial direction. The top rod plate 20 and tailstock 4 slide on the machine tool table 1 to adjust their positions. In addition, the limit rod 15 passes through the fixed plate 17, with one end slidingly engaged with the horizontal plate 19 through the limit block 16, and the other end sleeved on the end of the worm gear 9. As the fixed plate 17 moves left and right, it enhances the lateral support strength of the lead screw 18. By adjusting the second stud 21, the connecting block 22, the support block 23 and the pulley 24 can be moved, so that the pulley 24 slides in the slide rail of the machine tool table 1. The interaction force enhances the stability of the fixed plate 17 and prevents shaking during adjustment.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tailstock limiter for a CNC lathe, comprising a machine table (1), wherein a tailstock (4) is slidably mounted on the top of the machine table (1), and a first stud (7) for preventing the tailstock (4) from disengaging is fixedly mounted at the middle of one end of the top of the machine table (1), characterized in that: A limiting component for fixing the position of the tailstock (4) and adjusting the spacing is provided below one end of the tailstock (4). The limiting component includes a base (8) fixedly connected to the first stud (7). A worm gear (9) is rotatably connected to the top of the base (8). A lead screw (18) is fixedly connected to the other end of the worm gear (9). A fixing plate (17) is threadedly connected to the lead screw (18). A horizontal plate (19) is symmetrically welded to one side of the fixing plate (17). A top rod plate (20) is fixedly connected to the end of the horizontal plate (19). The top rod plate (20) is welded to the tailstock (4).

2. The tailstock limiter for a CNC lathe according to claim 1, characterized in that: The fixed plate (17) is movably connected to a limiting rod (15) for improving the lateral support strength of the lead screw (18). One end of the limiting rod (15) is fixedly connected to a limiting block (16) that is slidably connected to the surface of the horizontal plate (19). The other end of the limiting rod (15) is fixedly connected to a rectangular block (14) that is movably sleeved on the outer peripheral surface of the end of the worm (9).

3. The tailstock limiter for a CNC lathe according to claim 1, characterized in that: The top two sides of the machine tool table (1) are symmetrically fixedly connected to fixed blocks (12). The inner side of the fixed block (12) is rotatably connected to a horizontal shaft (11). The horizontal shaft (11) is fixedly connected to a worm wheel (10) that meshes with the worm (9). The end of the horizontal shaft (11) passes through the fixed block (12) and is fixedly connected to a turntable (13).

4. The tailstock limiter for a CNC lathe according to claim 1, characterized in that: The fixed plate (17) has symmetrically opened limit holes (1701) at both ends of its outer side surface. The limit holes (1701) and the limit rod (15) are movably connected. The fixed plate (17) has a threaded hole (1702) in the middle, which is threadedly connected to the lead screw (18).

5. A CNC lathe tailstock limiter according to claim 1, characterized in that: The fixed plate (17) is threaded with a second stud (21) on both sides. A connecting block (22) is rotatably connected to one end of the second stud (21). A support block (23) is fixedly connected to the end of the connecting block (22). A pulley (24) is fixedly installed below the end of the support block (23). The pulley (24) is rotatably connected to the machine tool table (1).

6. A tailstock limiter for a CNC lathe according to claim 1, characterized in that: The machine tool table (1) is provided with a chuck (2) fixedly installed at one top end of the machine tool table (1), a cutter head (3) is slidably installed on one side of the machine tool table (1), a handwheel (5) is provided at one top end of the tailstock (4), and a center point (6) is provided at the other top end of the tailstock (4).

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