Automatic workpiece pulling and hanging device for grinding machine

Abstract

The utility model relates to the technical field of traction devices for grinding machines, in particular to an automatic workpiece traction device for a grinding machine, which comprises a connecting seat, the outer surface of the connecting seat is in threaded connection with three threaded rods, the outer surfaces of the three threaded rods are all fixedly connected with hand wheels, the outer surfaces of the three hand wheels are all provided with a plurality of friction grooves, and the friction grooves are in threaded connection with the connecting seat. The inner side faces of the three threaded rods are movably connected with mounting blocks through bearings, the outer surfaces of the three threaded rods are movably sleeved with springs, the inner wall faces of the three mounting blocks are fixedly connected with arc-shaped connecting plates, and the inner wall faces of the three arc-shaped connecting plates are jointly connected with a motor output shaft in a clamped mode. According to the automatic workpiece pulling and hanging device for the grinding machine, self-adaptive clamping of workpieces with different diameters is achieved through the arc-shaped connecting plate capable of being adjusted in the radial direction and the spring, the maintenance time is shortened through the modular quick-release design, friction force is enhanced through the crossed net-shaped anti-skid lines, and machining flexibility and efficiency are improved.

Description

An automatic workpiece hanger for a grinding machine Technical Field

[0001] This utility model relates to the technical field of traction devices for grinding machines, and in particular to an automatic workpiece traction device for grinding machines. Background Technology

[0002] Chinese patent CN217225080U3 discloses a novel automatic traction device for grinding machines. The core structure of this patent includes: a connecting seat 1 with a traction disc 2 fixed at one end, a central insertion hole 4 on one side, three photoelectric sensor switches 5 evenly spaced on the inner wall, and three fixing devices 3 evenly spaced on the side and electrically connected to them. Each fixing device 3 consists of a fixing block 10, a connecting column 15, and a traction block 17. A servo motor 12 drives a lead screw 13 within the cavity 11 of the fixing block 10, which engages with a threaded hole 16 in the connecting column 15. The other end of the connecting column 15, the traction block 17, has an arc-shaped groove 18.

[0003] The patented structure achieves the function of traction of workpieces to a certain extent, but the following problems still exist: 1. In the authorized patent, the motor output shaft 7 is clamped by the motor hole 6 and the limiting hole 8, but it cannot be adapted to all diameters of motor output shaft 7, and the adaptability to motor output shafts of different diameters is weak; 2. In the authorized patent, the connecting seat 1 and the main components such as the traction disc 2 are directly fixed. When one of the components is damaged, disassembly requires the use of multiple tools to disassemble the fixed part, which is cumbersome and may damage other components due to improper disassembly. Summary of the Invention

[0004] The main purpose of this utility model is to provide an automatic workpiece hanger for grinding machines, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic workpiece hanger for a grinding machine includes a connecting seat. Three threaded rods are threadedly connected to the outer surface of the connecting seat. Handwheels are fixedly connected to the outer surfaces of the three threaded rods. Several friction grooves are formed on the outer surfaces of the three handwheels. Mounting blocks are movably connected to the inner surfaces of the three threaded rods via bearings. Springs are movably sleeved on the outer surfaces of the three threaded rods. Arc-shaped connecting plates are fixedly connected to the inner walls of the three mounting blocks. A motor output shaft is clamped to the inner walls of the three arc-shaped connecting plates.

[0007] Preferably, a connecting plate is fixedly connected to the right end of the connecting seat, and a plurality of through-holes are provided on the left end of the connecting plate. Each of the plurality of positioning holes is provided with a screw. A traction plate is snapped into the right end of the connecting plate. A plurality of threaded holes are provided on the left end of the traction plate. A plurality of connecting rods are fixedly connected to the right end of the traction plate. The ends of the plurality of connecting rods away from the threaded holes are all fixedly connected to a fixing block. A through-hole is provided on the left end of the fixing block.

[0008] Preferably, one end of each of the three springs is fixedly connected to the outer side of the three mounting blocks, and the other end is fixedly connected to the inner wall of the connecting seat.

[0009] Preferably, the three threaded rods are evenly distributed in a circle with the central axis of the connecting seat as the reference, and the included angle between adjacent threaded rods is 120°.

[0010] Preferably, the inner wall surfaces of the three arc-shaped connecting plates are provided with anti-slip textures, and the anti-slip textures are a cross-shaped mesh structure.

[0011] Preferably, the connecting plate and the connecting seat are integrally formed, and the outer diameter of the connecting plate is 20mm larger than the outer diameter of the connecting seat.

[0012] Preferably, the plurality of positioning holes and the plurality of threaded holes are distributed in a circular array around the center of the connecting disc and the traction disc.

[0013] Preferably, all of the screws are threaded through a plurality of positioning holes and a plurality of threaded holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, by combining three radially adjustable arc-shaped connecting plates with a spring buffer structure, adaptive clamping of motor output shafts of different diameters is achieved, greatly reducing clamping force error and significantly improving the compatibility of workpieces of various specifications.

[0016] 2. In this utility model, the authorized patented connecting seat and traction disc are integrally formed structures, which require complete disassembly during maintenance. However, this device adopts a combination design of a detachable connecting disc and traction disc + threaded hole, which allows the traction disc to be quickly disassembled and replaced without complicated tools, thus avoiding the risk of secondary damage caused by complete disassembly. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall front view of an automatic workpiece hanger for a grinding machine according to the present invention.

[0018] Figure 2 is a schematic diagram of the overall left-side structure of an automatic workpiece hanger for a grinding machine according to this utility model;

[0019] Figure 3 is an exploded view of the overall structure of an automatic workpiece hanger for a grinding machine according to this utility model.

[0020] Figure 4 is a schematic diagram of the overall rear view of an automatic workpiece hanger for a grinding machine according to this utility model.

[0021] In the diagram: 1. Connecting seat; 2. Threaded rod; 3. Handwheel; 4. Friction groove; 5. Mounting block; 6. Spring; 7. Arc-shaped connecting plate; 8. Motor output shaft; 9. Connecting disc; 10. Positioning hole; 11. Screw; 12. Traction disc; 13. Threaded hole; 14. Connecting rod; 15. Fixing block; 16. Through hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please refer to Figures 1-4. This utility model provides a technical solution:

[0026] An automatic workpiece hanger for a grinding machine includes a connecting seat 1. Three threaded rods 2 are threadedly connected to the outer surface of the connecting seat 1. Handwheels 3 are fixedly connected to the outer surfaces of the three threaded rods 2. Several friction grooves 4 are formed on the outer surfaces of the three handwheels 3. Mounting blocks 5 are movably connected to the inner surfaces of the three threaded rods 2 via bearings. Springs 6 are movably sleeved on the outer surfaces of the three threaded rods 2. Arc-shaped connecting plates 7 are fixedly connected to the inner walls of the three mounting blocks 5. A motor output shaft 8 is clamped onto the inner walls of the three arc-shaped connecting plates 7. One end of each spring 6 is fixedly connected to the outer surface of the three mounting blocks 5, and the other end is fixedly connected to the inner wall of the connecting seat 1. The three threaded rods 2 are evenly distributed circumferentially around the central axis of the connecting seat 1, with an included angle of 120° between adjacent threaded rods 2. Anti-slip textures are formed on the inner walls of the three arc-shaped connecting plates 7, and these anti-slip textures have a cross-shaped mesh structure.

[0027] The above scheme works as follows: the operator drives the threaded rod 2 to move axially by rotating the handwheel 3. The three threaded rods 2, which are distributed in a 120° circle, synchronously drive the mounting block 5 to move radially. When the arc-shaped connecting plate 7 contacts the motor output shaft 8, the spring 6 begins to store force and provide preload, ensuring that the three arc-shaped connecting plates 7 apply force evenly. The cross-shaped anti-slip texture increases friction and makes the engagement more reliable. When disassembly is required, the handwheel 3 is rotated in the opposite direction, and the spring 6 resets to assist the arc-shaped connecting plate 7 in quickly detaching from the workpiece.

[0028] In this embodiment, a connecting plate 9 is fixedly connected to the right end of the connecting seat 1. A plurality of through-holes 10 are provided on the left end of the connecting plate 9. Screws 11 are provided in each of the several positioning holes 10. A traction plate 12 is snapped onto the right end of the connecting plate 9. A plurality of through-holes 13 are provided on the left end of the traction plate 12. A plurality of connecting rods 14 are fixedly connected to the right end of the traction plate 12. A fixing block 15 is fixedly connected to the end of each of the several connecting rods 14 away from the threaded holes 13. A through-hole 16 is provided on the left end of the fixing block 15. The connecting plate 9 and the connecting seat 1 are integrally formed, and the outer diameter of the connecting plate 9 is 20mm larger than the outer diameter of the connecting seat 1. The plurality of positioning holes 10 and the plurality of threaded holes 13 are arranged in a circular array around the center of the connecting plate 9 and the traction plate 12. A plurality of screws 11 are threaded through the plurality of positioning holes 10 and the plurality of threaded holes 13.

[0029] The above scheme involves connecting the connecting seat 1 to the traction disc 12 via an integrally formed connecting disc 9. The outer diameter of the connecting disc 9 is 20mm larger than that of the connecting seat 1, forming a stepped positioning surface to ensure axial alignment accuracy during installation. The circular array of positioning holes 10 and threaded holes 13 are fixed by screws 11. When the traction disc 12 needs to be installed, it is snapped onto the right end of the connecting disc 9, ensuring coaxial alignment of the positioning holes 10 and threaded holes 13. Screws 11 are then inserted through the positioning holes 10 and into the threaded holes 13, utilizing the preload of the threaded pair to achieve a rigid connection. 12 is fixedly connected to the fixed round block 15 via the connecting rod 14. The through hole 16 is used to pass through the workpiece or transmission component, forming a complete force transmission path: the torque of the motor output shaft 8 is transmitted to the workpiece through the connecting seat 1 → connecting plate 9 → screw 11 → traction plate 12 → connecting rod 14 → fixed round block 15. When disassembling, only the screw 11 needs to be loosened to separate the traction plate 12 from the connecting plate 9. When a single component is damaged, there is no need to replace the whole thing. The layout of the screws 11 in a ring array makes the force evenly distributed, avoids stress concentration at a single point, and improves the reliability of the connection.

[0030] It should be noted that this utility model is an automatic workpiece hanger for a grinding machine. In use, firstly, the connecting seat 1 is connected to the grinding machine spindle via the connecting plate 9. Screws 11 are used to pass through the positioning hole 10 and the threaded hole 13 to ensure that the traction plate 12 is coaxial with the spindle. Rotating the handwheel 3 drives the threaded rod 2 to move axially, causing the mounting block 5 to retract radially. The three arc-shaped connecting plates 7 synchronously approach the motor output shaft 8. Springs 6 provide buffering, and the cross-shaped mesh anti-slip texture enhances friction, achieving self-adaptive clamping. The torque of the motor output shaft 8 is transmitted to the workpiece through the arc-shaped connecting plate 7 → mounting block 5 → threaded rod 2 → connecting seat 1 → connecting plate 9 → traction plate 12 → connecting rod 14 → fixed round block 15. During maintenance, the traction plate 12 can be separated by loosening the screws 11, and the arc-shaped connecting plate 7 can be replaced by disassembling the corresponding threaded rod 2, realizing modular maintenance. This process, through mechanical linkage and modular structure, realizes automatic adaptation of workpieces of different diameters, high-precision coaxiality control, and rapid changeover capability, significantly improving the flexibility and efficiency of grinding machine processing.

[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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic workpiece carrier for a grinding machine, comprising a connecting seat (1), characterized in that: The outer surface of the connecting seat (1) is threaded with three threaded rods (2), and the outer surfaces of the three threaded rods (2) are fixedly connected with handwheels (3). The outer surfaces of the three handwheels (3) are provided with several friction grooves (4). The inner surfaces of the three threaded rods (2) are movably connected with mounting blocks (5) through bearings. The outer surfaces of the three threaded rods (2) are movably sleeved with springs (6). The inner walls of the three mounting blocks (5) are fixedly connected with arc-shaped connecting plates (7). The inner walls of the three arc-shaped connecting plates (7) are jointly clamped with the motor output shaft (8).

2. The automatic workpiece hanger for a grinding machine according to claim 1, characterized in that: The right end of the connecting seat (1) is fixedly connected to a connecting plate (9). The left end of the connecting plate (9) has several through-holes (10). Each of the several through-holes (10) is provided with a screw (11). The right end of the connecting plate (9) is engaged with a traction plate (12). The left end of the traction plate (12) has several through-holes (13). The right end of the traction plate (12) is fixedly connected to several connecting rods (14). The ends of the several connecting rods (14) away from the through-holes (13) are all fixedly connected to a fixing block (15). The left end of the fixing block (15) has a through-hole (16).

3. The automatic workpiece hanger for a grinding machine according to claim 1, characterized in that: One end of each of the three springs (6) is fixedly connected to the outer side of the three mounting blocks (5), and the other end is fixedly connected to the inner wall of the connecting seat (1).

4. The automatic workpiece hanger for a grinding machine according to claim 1, characterized in that: The three threaded rods (2) are evenly distributed in a circle with the central axis of the connecting seat (1) as the reference, and the included angle between adjacent threaded rods (2) is 120°.

5. The automatic workpiece hanger for a grinding machine according to claim 1, characterized in that: The inner wall surfaces of the three arc-shaped connecting plates (7) are provided with anti-slip textures, and the anti-slip textures are a cross-shaped mesh structure.

6. The automatic workpiece hanger for a grinding machine according to claim 2, characterized in that: The connecting plate (9) and the connecting seat (1) are integrally formed, and the outer diameter of the connecting plate (9) is 20mm larger than the outer diameter of the connecting seat (1).

7. The automatic workpiece hanger for a grinding machine according to claim 2, characterized in that: The positioning holes (10) and the threaded holes (13) are arranged in a circular array around the center of the connecting disc (9) and the traction disc (12).

8. The workpiece automatic chuck of claim 2, wherein: Several screws (11) are threaded through several positioning holes (10) and several threaded holes (13).

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