A positioning device for milling machine tools
By using a motor-driven gear plate and a forward and reverse threaded screw system, the problems of time-consuming, labor-intensive, and wear-prone traditional machine tool milling positioning devices are solved, achieving stable and efficient positioning of the transmission shaft.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ZHENGLIANG PRECISION MASCH MFG CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional positioning devices for milling on machine tools are time-consuming, labor-intensive, and prone to wear on the surface of the drive shaft due to the use of multiple screws.
The system employs a motor-driven gear plate structure and a forward and reverse threaded screw system. The gear plate drives the clamping plate to approach the clamping drive shaft, and the forward and reverse threaded screws and slot insertion rods further fix it in place, achieving stable positioning.
It improves the stability and convenience of the positioning device, reduces wear on the drive shaft, and simplifies the operation process.
Smart Images

Figure CN224424939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machine tool processing technology, specifically a positioning device for machine tool milling. Background Technology
[0002] Existing machine tools often require a positioning device to clamp and position the workpiece during milling.
[0003] However, traditional clamping and positioning devices mainly use multiple screws to clamp and position the drive shaft, which is time-consuming and laborious to operate, and is prone to wear on the surface of the drive shaft, making it inconvenient to clamp the drive shaft; therefore, a positioning device for machine tool milling is proposed to address the above problems. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A positioning device for milling machine tools, comprising a base, a first motor fixedly connected to the outer side of the base, a rotating rod fixedly connected to the output end of the first motor, the rotating rod being rotatably connected to the base, a first gear fixedly connected to the outer side of the rotating rod, an inner and outer gear ring meshing with the outer side of the first gear, the inner and outer gear rings being rotatably connected to the base, a second gear meshing with the inner side of the inner and outer gear rings, the second gear being rotatably connected to the base, a toothed plate meshing with the outer side of the second gear, and a sliding connection being made on the inner side of the toothed plate. The control rod is fixedly connected to the base, and a clamping plate is fixedly connected to the outer side of the toothed plate. This step involves setting up a first gear, inner and outer gear rings, a second gear, a toothed plate, and a clamping plate. In use, the drive shaft is placed between the clamping plates, the first motor is started, and the first motor drives the rotating rod to rotate, which in turn drives the first gear to rotate. The first gear drives the inner and outer gear rings to rotate, which in turn drives the second gear to rotate. The second gear drives the toothed plate to move, and the toothed plate drives the clamping plates to move closer to each other. Thus, the clamping plates are pressed against the drive shaft to center it, and then the drive shaft is milled.
[0006] Preferably, a second motor is fixedly connected to the outer side of the base, and a threaded rod is fixedly connected to the output end of the second motor. A movable frame is threadedly connected to the outer side of the threaded rod, and the movable frame is slidably connected to the base. A plug rod is fixedly connected to the outer side of the movable frame, and a slot is provided on the surface of the clamping plate. The plug rod and the slot are used in conjunction. By setting up the second motor, the threaded rod, the movable frame, the plug rod, and the slot, after the clamping plate is close to the drive shaft, the second motor can drive the threaded rod to rotate, which in turn drives the movable frame to move. The movable frame then drives the plug rod to move to the slot where it is inserted into the appropriate position. This further restricts and fixes the position of the clamping plate through the plug rod, improving the stability of the device's positioning.
[0007] Preferably, an adjusting screw is rotatably connected to the inner side of the movable frame, and a reinforcing plate is threadedly connected to the outer side of the adjusting screw. This step, by setting the adjusting screw and the reinforcing plate, allows the reinforcing plate to be manually held after the drive shaft is clamped by the clamping plate, and then the adjusting screw is rotated. The adjusting screw moves the reinforcing plate to a suitable position, so that when the movable frame drives the insertion rod to insert into the slot, the reinforcing plate moves to fit tightly against both end faces of the drive shaft, thereby further positioning the drive shaft, making its position more stable, and improving the stability of the device.
[0008] Preferably, a limiting rod is fixedly connected to the outside of the movable frame, and the limiting rod and the reinforcing plate are slidably connected. This step, by setting the limiting rod, allows the reinforcing plate to move by inserting the limiting rod inside, thereby further restricting the movement trajectory of the reinforcing plate and improving the stability of the device.
[0009] Preferably, a limiting plate is fixedly connected to the outer side of the positive and negative threaded screws, and the limiting plate is used in conjunction with the movable frame. This step, by setting the limiting plate, restricts and blocks the movable frame when it moves to its maximum position, making it difficult for it to continue moving. This reduces the likelihood of wear caused by the movable frame colliding with the inner and outer gear rings, thus improving the stability of the device operation.
[0010] Preferably, a mounting plate is fixedly connected to the outer side of the base, and a positioning rod is slidably connected to the inner side of the mounting plate. This step, by setting the mounting plate and the positioning rod, makes it easy to insert the positioning rod into the positioning slot on the inner side of the machine tool when the device is placed on the machine tool, thereby facilitating the placement and positioning of the device and improving the convenience of using the device.
[0011] The advantages of this utility model are:
[0012] 1. This utility model, by setting up a first gear, inner and outer gear rings, a second gear, a gear plate, and a clamping plate, in use, places the drive shaft between the clamping plates, starts the first motor, drives the rotating rod to rotate, drives the first gear to rotate, drives the inner and outer gear rings to rotate, drives the second gear to rotate, drives the gear plate to move, and drives the clamping plates to move closer to each other, thereby centering the drive shaft by clamping it against the drive shaft, and then the drive shaft can be milled.
[0013] 2. This utility model, by setting a second motor, a positive and negative threaded screw, a movable frame, a plug rod, and a slot, allows the second motor to drive the positive and negative threaded screw to rotate after the clamping plate is attached to the drive shaft. The positive and negative threaded screw then drives the movable frame to move, and the movable frame then drives the plug rod to move to the inside of the slot where it is inserted into the appropriate position. This further restricts and fixes the position of the clamping plate through the plug rod, thereby improving the stability of the device's positioning. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a front view of the structure in this utility model;
[0016] Figure 2 This is a top view of the structure in this utility model;
[0017] Figure 3 This is a schematic diagram of the base structure in this utility model;
[0018] Figure 4 This is a schematic diagram of the internal and external gear ring structure in this utility model;
[0019] Figure 5 This is a schematic diagram of the movable frame structure in this utility model.
[0020] In the diagram: 1. Base; 2. First motor; 3. Rotating rod; 4. First gear; 5. Internal and external gear rings; 6. Second gear; 7. Gear plate; 8. Limiting rod; 9. Clamping plate; 10. Second motor; 11. Positive and negative thread screws; 12. Movable frame; 13. Insert rod; 14. Slot; 15. Adjusting screw; 16. Reinforcing plate; 17. Limiting rod; 18. Limiting plate; 19. Mounting plate; 20. Positioning rod. Detailed Implementation
[0021] 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 scope of protection of the present utility model.
[0022] Specific implementation examples are given below.
[0023] Please see Figures 1 to 5 As shown, a positioning device for milling machine tools includes a base 1. A first motor 2 is fixedly connected to the outer side of the base 1. A rotating rod 3 is fixedly connected to the output end of the first motor 2. The rotating rod 3 is rotatably connected to the base 1. A first gear 4 is fixedly connected to the outer side of the rotating rod 3. An inner and outer gear ring 5 meshes with the outer side of the first gear 4. The inner and outer gear ring 5 are rotatably connected to the base 1. A second gear 6 meshes with the inner side of the inner and outer gear ring 5. The second gear 6 is rotatably connected to the base 1. A toothed plate 7 meshes with the outer side of the second gear 6. A limiting rod 8 is slidably connected to the inner side of the toothed plate 7. The limiting rod 8 is fixed to the base 1. The toothed plate 7 is connected to a clamping plate 9 on its outer side. This step involves setting up a first gear 4, inner and outer gear rings 5, a second gear 6, a toothed plate 7, and a clamping plate 9. In use, the drive shaft is placed between the clamping plates 9, the first motor 2 is started, the first motor 2 drives the rotating rod 3 to rotate, the rotating rod 3 drives the first gear 4 to rotate, the first gear 4 drives the inner and outer gear rings 5 to rotate, the inner and outer gear rings 5 drive the second gear 6 to rotate, the second gear 6 drives the toothed plate 7 to move, and the toothed plate 7 drives the clamping plates 9 to move closer to each other, so that the clamping plates 9 are pressed against the drive shaft to center it. Then the drive shaft can be milled.
[0024] Furthermore, such as Figure 1 and Figure 2 As shown, a second motor 10 is fixedly connected to the outer side of the base 1. A threaded screw 11 is fixedly connected to the output end of the second motor 10. A movable frame 12 is threadedly connected to the outer side of the threaded screw 11. The movable frame 12 is slidably connected to the base 1. A plug rod 13 is fixedly connected to the outer side of the movable frame 12. A slot 14 is provided on the surface of the clamping plate 9. The plug rod 13 and the slot 14 are used in conjunction. By setting up the second motor 10, the threaded screw 11, the movable frame 12, the plug rod 13, and the slot 14, after the clamping plate 9 is close to the drive shaft, the second motor 10 can drive the threaded screw 11 to rotate. The threaded screw 11 drives the movable frame 12 to move. The movable frame 12 drives the plug rod 13 to move to the inside of the slot 14 where it is inserted into a suitable position. Thus, the plug rod 13 further restricts and fixes the position of the clamping plate 9, improving the stability of the device positioning.
[0025] Furthermore, such as Figure 1 As shown, an adjusting screw 15 is rotatably connected to the inner side of the movable frame 12, and a reinforcing plate 16 is threadedly connected to the outer side of the adjusting screw 15. In this step, by setting the adjusting screw 15 and the reinforcing plate 16, after the transmission shaft is clamped by the clamping plate 9, the reinforcing plate 16 is manually held, and then the adjusting screw 15 is rotated. The adjusting screw 15 drives the reinforcing plate 16 to move to a suitable position. Thus, when the movable frame 12 drives the insertion rod 13 to insert into the inner side of the slot 14, the reinforcing plate 16 moves to fit against the two end faces of the transmission shaft, thereby further positioning the transmission shaft, making the position of the transmission shaft more stable, and improving the stability of the device.
[0026] Furthermore, such as Figure 1 As shown, a limiting rod 17 is fixedly connected to the outside of the movable frame 12, and the limiting rod 17 and the reinforcing plate 16 are slidably connected. This step, by setting the limiting rod 17, allows the reinforcing plate 16 to move, so that when it moves, the limiting rod 17 can be inserted into its inner side, thereby further restricting the movement trajectory of the reinforcing plate 16 and improving the stability of the device.
[0027] Furthermore, such as Figure 2 As shown, a limiting plate 18 is fixedly connected to the outer side of the positive and negative threaded screw 11. The limiting plate 18 works in conjunction with the movable frame 12. By setting the limiting plate 18, when the movable frame 12 moves to its maximum position, the limiting plate 18 restricts and blocks the movable frame 12, making it difficult for it to continue moving. This reduces the likelihood of the movable frame 12 colliding with the inner and outer gear rings 5 and causing wear, thus improving the stability of the device operation.
[0028] Furthermore, such as Figure 1 As shown, a mounting plate 19 is fixedly connected to the outer side of the base 1, and a positioning rod 20 is slidably connected to the inner side of the mounting plate 19. This step, by setting the mounting plate 19 and the positioning rod 20, makes it easy to insert the positioning rod 20 into the positioning groove inside the machine tool when the device is placed on the machine tool, thereby facilitating the placement and positioning of the device and improving the convenience of using the device.
[0029] Working principle: During use, the drive shaft is placed between the clamping plates 9. The first motor 2 is started, which drives the rotating rod 3 to rotate. The rotating rod 3 drives the first gear 4 to rotate, which drives the inner and outer gear rings 5 to rotate. The inner and outer gear rings 5 drive the second gear 6 to rotate, which drives the gear plate 7 to move. The gear plate 7 drives the clamping plates 9 to move closer together, thus centering the drive shaft by clamping the clamping plates 9 against it. Then, the adjusting screw 15 is rotated, which moves the reinforcing plate 16 to the appropriate position. The second motor 10 drives the positive and negative thread screw 11 to rotate, which moves the movable frame 12. The movable frame 12 moves the insertion rod 13 to the inside of the slot 14, which is inserted into the appropriate position. The insertion rod 13 further restricts and fixes the position of the clamping plate 9. At the same time, the movable frame 12 moves the reinforcing plate 16 to the two ends of the drive shaft, further restricting and fixing the position of the drive shaft. Finally, it can be milled.
[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A positioning device for milling on a machine tool, comprising a base (1), characterized in that: A first motor (2) is fixedly connected to the outside of the base (1). A rotating rod (3) is fixedly connected to the output end of the first motor (2). The rotating rod (3) is rotatably connected to the base (1). A first gear (4) is fixedly connected to the outside of the rotating rod (3). An inner and outer gear ring (5) meshes with the outside of the first gear (4). The inner and outer gear ring (5) is rotatably connected to the base (1). A second gear (6) meshes with the inside of the inner and outer gear ring (5). The second gear (6) is rotatably connected to the base (1). A toothed plate (7) meshes with the outside of the second gear (6). A limiting rod (8) is slidably connected to the inside of the toothed plate (7). The limiting rod (8) is fixedly connected to the base (1). A clamping plate (9) is fixedly connected to the outside of the toothed plate (7).
2. The positioning device for milling on a machine tool according to claim 1, characterized in that: A second motor (10) is fixedly connected to the outside of the base (1). A screw rod (11) with positive and negative threads is fixedly connected to the output end of the second motor (10). A movable frame (12) is threadedly connected to the outside of the screw rod (11). The movable frame (12) and the base (1) are slidably connected. A plug rod (13) is fixedly connected to the outside of the movable frame (12). A slot (14) is opened on the surface of the clamp (9). The plug rod (13) and the slot (14) are used together.
3. A positioning device for milling on a machine tool according to claim 2, characterized in that: An adjusting screw (15) is rotatably connected to the inner side of the movable frame (12), and a reinforcing plate (16) is threadedly connected to the outer side of the adjusting screw (15).
4. A positioning device for milling on a machine tool according to claim 3, characterized in that: The movable frame (12) is fixedly connected to a limiting rod (17) on the outside, and the limiting rod (17) and the reinforcing plate (16) are slidably connected.
5. A positioning device for milling on a machine tool according to claim 4, characterized in that: A limiting plate (18) is fixedly connected to the outside of the positive and negative threaded screw (11), and the limiting plate (18) and the movable frame (12) are used together.
6. A positioning device for milling on a machine tool according to claim 5, characterized in that: A mounting plate (19) is fixedly connected to the outer side of the base (1), and a positioning rod (20) is slidably connected to the inner side of the mounting plate (19).