Positioning mechanism for machining of a numerically controlled lathe

Abstract

The utility model relates to the field of machining, disclose a numerical control lathe processing positioning mechanism, including the bottom plate, the bottom plate top fixedly connected with the workstation, the workstation front side outer wall is provided with electric telescopic link, electric telescopic link drive end fixedly connected with connecting rod no.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a positioning mechanism for CNC lathe machining. Background Technology

[0002] In the automotive manufacturing industry, bearings are core components that ensure the normal operation of critical systems such as transmission, steering, and suspension. Their machining accuracy directly affects the driving safety, comfort, and service life of automobiles. With the rapid development of the automotive industry, the market's quality requirements for automotive bearings are becoming increasingly stringent. They not only need to meet performance indicators such as high strength and high wear resistance, but also need to ensure extremely high machining accuracy. Therefore, stable clamping and precise positioning during bearing machining have become key factors in determining product quality.

[0003] In existing automotive bearing processing technologies, traditional manual clamps or dedicated fixed clamps are commonly used for clamping bearing workpieces. Manual clamps require operators to manually tighten the bearings using tools such as wrenches. This is not only cumbersome and labor-intensive, but also prone to attenuation of clamping force during grinding, turning, and other machining processes due to high-frequency machine tool vibrations. This can lead to slight displacement of the bearing workpiece, resulting in dimensional deviations in the inner and outer rings or insufficient raceway accuracy, directly affecting the bearing's assembly accuracy and performance. While dedicated fixed clamps can ensure a certain level of clamping stability, they are only suitable for processing specific bearing models. When switching to different bearing specifications, the entire set of clamps must be replaced, increasing production preparation time and equipment investment costs. Meanwhile, existing bearing machining positioning mechanisms also have significant shortcomings in achieving lateral feed and vertical height adjustment: lateral positioning mostly uses ordinary lead screw transmission, which is prone to backlash error due to lead screw backlash, resulting in deviations in the bearing machining position; vertical positioning lacks reliable limiting and locking structures, and is prone to shaking during adjustment, making it difficult to ensure consistent height accuracy during bearing grinding or drilling. This not only prolongs changeover adjustment time and reduces overall machining efficiency, but also makes it difficult to meet the high-precision machining requirements of diverse automotive bearing specifications. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a CNC lathe machining positioning mechanism. This invention achieves convenient clamping of different workpieces through an electric telescopic rod, reducing manual operation and improving the pass rate; and achieves precise horizontal and vertical positioning through threaded rod transmission, shortening adjustment time, improving efficiency, and meeting diverse processing needs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A CNC lathe machining positioning mechanism includes a base plate, a worktable fixedly connected to the top of the base plate, an electric telescopic rod provided on the front outer wall of the worktable, a moving rod connected to the driving end of the electric telescopic rod via a connecting rod, a clamping block connected to the moving rod via a rotating assembly, a bracket fixedly connected to the top of the base plate, a motor provided on the right outer wall of the bracket, the motor driving a threaded rod to move a moving plate horizontally along the bracket, a moving block slidably connected inside the moving plate, a knob rotatably connected to the rear outer wall of the moving block, and two threaded blocks connected to the knob via a worm gear assembly.

[0006] Furthermore, the rotating assembly includes a second connecting rod rotatably connected to the outer walls of the left and right sides of the moving rod, and a rotating block rotatably connected to the outer walls of the left and right sides of the second connecting rod, and the rotating block is fixedly connected to the inner walls of the left and right sides of the clamping block.

[0007] Furthermore, the worm gear assembly includes a worm fixedly connected to the outer wall of the front side of the knob, a worm wheel meshing with the outer wall of the worm, a bidirectional threaded rod fixedly connected inside the worm wheel, and a threaded block threadedly connected to the outer wall of the bidirectional threaded rod.

[0008] Furthermore, the worktable has a second sliding groove inside, through which the moving rod and the connecting rod move within the worktable. The worktable also has a groove inside, through which the clamping block moves within the worktable to clamp and fix the object.

[0009] Furthermore, a sliding groove is provided on the rear side wall of the bracket, and the moving plate moves horizontally inside the bracket through the sliding groove.

[0010] Furthermore, a sliding groove three is provided on the outer wall of the left side of the movable plate, and the knob moves on the outer wall of the movable plate through the sliding groove three.

[0011] Furthermore, at least two equidistant limiting grooves are provided on the inner walls of the upper and lower sides of the movable plate, and the threaded block limits the movable block by entering the limiting groove.

[0012] Furthermore, rubber pads are fixedly connected to the left and right outer walls of the clamping block to prevent damage caused by squeezing the object.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the clamping block is automatically clamped by an electric telescopic rod, which can adapt to different types of workpieces, effectively avoid displacement problems caused by vibration during processing, significantly reduce quality defects caused by positioning deviations, and improve the product qualification rate. At the same time, the clamping operation is convenient and efficient, reducing the tedious steps of manual fixing and laying a stable foundation for subsequent processing.

[0014] 2. In this utility model, the mechanism can quickly achieve precise horizontal and vertical positioning of the processing position. Horizontally, it achieves smooth movement through threaded rod transmission, and vertically, it uses a bidirectional threaded rod and a limiting groove to fix the height, shortening the positioning adjustment time, improving the overall processing efficiency, and providing high positioning accuracy to meet the needs of diverse processing scenarios. Attached Figure Description

[0015] Figure 1 This is a perspective view of a CNC lathe machining positioning mechanism proposed in this utility model; Figure 2 This is a schematic diagram of the worktable structure of a CNC lathe machining positioning mechanism proposed in this utility model; Figure 3 This is a schematic diagram of the moving plate structure of a CNC lathe machining positioning mechanism proposed in this utility model; Figure 4 This is a schematic diagram of the moving block structure of a CNC lathe machining positioning mechanism proposed in this utility model.

[0016] Legend: 1. Base plate; 2. Workbench; 3. Electric telescopic rod; 4. Clamping block; 5. Knob; 6. Sliding groove one; 7. Moving plate; 8. Moving block; 9. Threaded block; 10. Bracket; 11. Motor; 12. Connecting rod one; 13. Rotating block; 14. Connecting rod two; 15. Moving rod; 16. Sliding groove two; 17. Groove; 18. Sliding groove three; 19. Threaded rod; 20. Worm gear; 21. Worm wheel; 22. Bidirectional threaded rod; 23. Limiting groove. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-4This utility model provides an embodiment of a CNC lathe machining positioning mechanism, comprising a base plate 1. The base plate 1 has a worktable 2 fixedly connected to its top end. An electric telescopic rod 3 is provided on the front outer wall of the worktable 2. A connecting rod 12 is fixedly connected to the drive end of the electric telescopic rod 3. A moving rod 15 is fixedly connected to the rear outer wall of the connecting rod 12. A rotating assembly includes connecting rods 14 rotatably connected to the left and right outer walls of the moving rod 15. Rotating blocks 13 are rotatably connected to the left and right outer walls of the connecting rods 14. The rotating blocks 13 are fixedly connected to the left and right sides of the clamping block 4. On the right inner wall, a bracket 10 is fixedly connected to the top of the base plate 1. A motor 11 is installed on the right outer wall of the bracket 10. A threaded rod 19 is fixedly connected to the drive end of the motor 11. A movable plate 7 is threadedly connected to the outer wall of the threaded rod 19. A movable block 8 is slidably connected to the inner wall of the movable plate 7. A knob 5 is rotatably connected to the rear outer wall of the movable block 8. The worm gear assembly includes a worm 20 fixedly connected to the front outer wall of the knob 5. A worm gear 21 is meshed with the outer wall of the worm 20. A bidirectional threaded rod 22 is fixedly connected inside the worm gear 21. A threaded block 9 is threadedly connected to the outer wall of the bidirectional threaded rod 22.

[0019] Specifically, this mechanism requires the use of other working devices. First, the object to be processed is placed on the top surface of the worktable 2. Then, the electric telescopic rod 3 is activated, causing the connecting rod 12 to extend and retract. This allows the moving rod 15 to move back and forth along the sliding groove 16. During the movement of the moving rod 15, the connecting rods 14 at its left and right ends rotate, causing the clamping block 4 to move horizontally along the groove 17 inside the worktable 2. This clamps the object on the surface of the worktable 2, preventing displacement due to vibration during operation and thus avoiding quality problems. Simultaneously, the electric telescopic rod 3 can also clamp and fix objects of different sizes. After the object is clamped, the motor 11 is activated, causing its drive end to rotate the threaded rod 19. This allows the moving plate 7, threaded to the outer wall of the threaded rod 19, to move horizontally along the sliding groove 6 inside the support 10, thus achieving the desired processing of the object. After horizontal positioning, turn knob 5 to rotate the worm gear 20, which in turn drives the worm wheel 21 to rotate the double-sided threaded rod 22. This causes the threaded block 9 to move along the threaded pattern on the outer wall of the double-sided threaded rod 22 and disengage from the limiting grooves 23 on the inner walls of the upper and lower sides of the moving plate 7. At this time, the moving block 8 loses its limiting position inside the moving plate 7 and can move vertically inside the moving plate 7. This allows the vertical position of the object to be processed to be adjusted according to the distance between the two limiting grooves 23. After the position is selected, turn knob 5 in the opposite direction to move the threaded block 9 on the outer wall of the double-sided threaded rod 22 and into the limiting groove 23, fixing the moving block 8 on the moving plate 7. Finally, connect the working device to the connecting device on the outer wall of the moving block 8, and the object to be processed can be processed. This allows for quick horizontal and vertical positioning of the surface of the object to be processed, saving time.

[0020] Reference Figures 2-4The workbench 2 has a sliding groove 16 inside, through which the moving rod 15 and the connecting rod 12 move. The workbench 2 also has a groove 17 inside, through which the clamping block 4 moves to clamp and fix the object. The rear side wall of the support 10 has a sliding groove 6, through which the moving plate 7 moves horizontally inside the support 10. The left outer wall of the moving plate 7 has a sliding groove 18, through which the knob 5 slides on the outer wall of the moving plate 7. The upper and lower inner walls of the moving plate 7 have at least two equally spaced limiting grooves 23, through which the threaded block 9 limits the moving block 8 by entering the limiting groove 23. Rubber pads are fixedly connected to the left and right outer walls of the clamping block 4 to prevent damage caused by squeezing the object.

[0021] Specifically, the workbench 2 of the mechanism is equipped with a sliding groove 16, through which the moving rod 15 and the connecting rod 12 can move within the workbench 2. The workbench 2 also has a groove 17, which allows the clamping block 4 to move horizontally to clamp and fix the object. The rubber pads on the left and right outer walls of the clamping block 4 effectively prevent damage to the object from squeezing. The sliding groove 6 on the rear wall of the support 10 provides a path for the moving plate 7 to move horizontally. The sliding groove 18 on the left outer wall of the moving plate 7 allows the knob 5 to slide. At least two equally spaced limiting grooves 23 are also provided on the upper and lower inner walls. The threaded block 9 enters the limiting groove 23 to limit and fix the moving block 8. This structural design ensures that each component operates stably along a predetermined trajectory, achieving reliable clamping and precise positioning of the object, while also protecting the object with rubber pads, thus improving operational safety and practicality.

[0022] Working Principle: This mechanism requires the use of other working devices. The object to be processed is placed on the top surface of the worktable 2. Then, by activating the electric telescopic rod 3, the connecting rod 12 extends or retracts, causing the moving rod 15 to move back and forth along the sliding groove 16. As the moving rod 15 moves, the connecting rods 14 at its left and right ends rotate, causing the clamping block 4 to move horizontally along the groove 17 inside the worktable 2. The depth of the groove 17 is greater than the height of the clamping block 4, thus clamping the object on the surface of the worktable 2 and preventing displacement due to vibration during operation, which could lead to quality problems. This operation can also be used to clamp and fix objects of different sizes by operating the electric telescopic rod 3. After clamping the object, activating the motor 11 causes its drive end to rotate the threaded rod 19, allowing the moving plate 7, which is threaded to the outer wall of the threaded rod 19, to move horizontally along the sliding groove 6 inside the bracket 10, thereby achieving the desired processing. The object to be processed is positioned laterally. Then, by rotating knob 5, it drives the worm gear 20 to rotate, which in turn drives the worm wheel 21 to rotate the double-threaded rod 22. This causes the threaded block 9 to move along the threaded pattern on the outer wall of the double-threaded rod 22 and disengage from the limiting grooves 23 on the inner walls of the upper and lower sides of the moving plate 7. This allows the moving block 8 to move vertically within the moving plate 7, and the vertical position of the object to be processed can be adjusted according to the distance between the two limiting grooves 23. After the position is selected, rotating knob 5 in the opposite direction causes the double-threaded rod 22 to move the threaded block 9 on its outer wall, which then enters the limiting groove 23, fixing the moving block 8 on the moving plate 7. Then, by connecting the working device to the connecting device on the outer wall of the moving block 8, the object to be processed can be processed. This effect allows for rapid positioning of the surface of the object to be processed in both the lateral and longitudinal directions, saving time.

[0023] 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 CNC lathe machining positioning mechanism, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a workbench (2). An electric telescopic rod (3) is provided on the front outer wall of the workbench (2). The driving end of the electric telescopic rod (3) is connected to a moving rod (15) via a connecting rod (12). The moving rod (15) is connected to a clamping block (4) via a rotating assembly. The top of the base plate (1) is fixedly connected to a bracket (10). A motor (11) is provided on the right outer wall of the bracket (10). The motor (11) drives a threaded rod (19) to make the moving plate (7) move horizontally along the bracket (10). A moving block (8) is slidably connected inside the moving plate (7). A knob (5) is rotatably connected to the rear outer wall of the moving block (8). The knob (5) is connected to two threaded blocks (9) via a worm gear assembly.

2. The CNC lathe machining positioning mechanism according to claim 1, characterized in that: The rotating assembly includes a connecting rod two (14) rotatably connected to the outer walls of the left and right sides of the moving rod (15). The connecting rod two (14) is rotatably connected to the outer walls of the left and right sides of the connecting rod two (14) and the rotating block (13) is fixedly connected to the inner walls of the left and right sides of the clamping block (4).

3. The CNC lathe machining positioning mechanism according to claim 1, characterized in that: The worm gear assembly includes a worm (20) fixedly connected to the outer wall of the front side of the knob (5), a worm wheel (21) meshing with the outer wall of the worm (20), a bidirectional threaded rod (22) fixedly connected inside the worm wheel (21), and a threaded block (9) threadedly connected to the outer wall of the bidirectional threaded rod (22).

4. The CNC lathe machining positioning mechanism according to claim 1, characterized in that: The workbench (2) has a sliding groove (16) inside. The moving rod (15) and the connecting rod (12) move inside the workbench (2) through the sliding groove (16). The workbench (2) also has a groove (17) inside. The clamping block (4) moves inside the workbench (2) through the groove (17) to clamp and fix the object.

5. A CNC lathe machining positioning mechanism according to claim 1, characterized in that: The rear side wall of the bracket (10) is provided with a sliding groove (6), and the moving plate (7) moves horizontally inside the bracket (10) through the sliding groove (6).

6. The CNC lathe machining positioning mechanism according to claim 1, characterized in that: The movable plate (7) has a sliding groove three (18) on its left outer wall, and the knob (5) moves on the outer wall of the movable plate (7) through the sliding groove three (18).

7. A CNC lathe machining positioning mechanism according to claim 1, characterized in that: The upper and lower inner walls of the movable plate (7) are provided with at least two equally spaced limiting grooves (23), and the threaded block (9) limits the movable block (8) by entering the limiting groove (23).

8. A CNC lathe machining positioning mechanism according to claim 1, characterized in that: The left and right outer walls of the clamping block (4) are fixedly connected with rubber pads to prevent damage to the object by squeezing.

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