Automatic fixture of cylindrical grinding machine

Abstract

The utility model discloses a cylindrical grinding machine automatic clamp which comprises a base, a first motor is fixedly installed on the top of the base, a reciprocating lead screw is fixedly installed on an output shaft of the first motor through a coupler, threaded sleeves are connected to the two sides of the surface of the reciprocating lead screw in a threaded mode, and a square frame is fixedly installed on the top of the threaded sleeve on the left side. A columnar workpiece is placed on the inner side of the U-shaped frame, then the first motor is started, the first motor is started to drive the reciprocating lead screw to rotate, the reciprocating lead screw rotates to drive the two threaded sleeves to move towards the middle at the same time, and the threaded sleeves move to drive the square frame and the U-shaped frame to move towards the middle at the same time. And therefore, the effect of clamping the columnar workpieces with different sizes is achieved.

Description

Technical Field

[0001] This utility model relates to the field of external cylindrical grinding machine fixtures, specifically an automatic fixture for external cylindrical grinding machines. Background Technology

[0002] External cylindrical grinding machines, as key equipment in the field of machining, are widely used for the surface finishing of various cylindrical workpieces. In actual production processes, the dimensional specifications and machining requirements of workpieces exhibit diverse characteristics;

[0003] Currently, most commercially available cylindrical grinding machine fixtures are designed for workpieces of specific sizes. When machining cylindrical workpieces of different sizes, frequent fixture changes are often required. This is not only cumbersome and time-consuming, but also prone to inaccurate workpiece positioning due to poor fixture adaptability, affecting machining accuracy. Furthermore, existing fixtures typically lack automatic angle adjustment after clamping the workpiece. To machine a workpiece at a specific angle, the operator must manually adjust it, which is not only inefficient but also makes it difficult to guarantee the accuracy of angle adjustment, failing to meet the demands of modern high-precision and high-efficiency machining. Therefore, it is necessary to design an automatic fixture for cylindrical grinding machines to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic fixture for a cylindrical grinding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic fixture for an external cylindrical grinding machine, including a base, a first motor fixedly mounted on the top of the base, a reciprocating screw fixedly mounted on the output shaft of the first motor via a coupling, threaded sleeves threadedly connected to both sides of the surface of the reciprocating screw, a square frame fixedly mounted on the top of the threaded sleeve on the left side, and a U-shaped frame fixedly mounted on the top of the threaded sleeve on the right side.

[0006] The top of the base is provided with a sliding groove, and the two sides inside the sliding groove are slidably connected to a second slider. The top of the second slider is fixedly connected to the bottom of the threaded sleeve.

[0007] Preferably, a sliding plate is fixedly installed on both the front and rear of the square frame. A first slider is slidably connected inside the sliding plate. A rotating shaft is rotatably connected to the surface of the first slider through a bearing. A roller is fixedly installed at one end of the rotating shaft. A spring is welded to one side of the first slider, and one end of the spring is welded to one side of the inner cavity of the sliding plate.

[0008] Preferably, a mounting plate is fixedly installed at the bottom of the first slider on the front side, the bottom of the mounting plate penetrates through the slide plate and extends to the outside of the slide plate, and a second motor is fixedly installed on the surface of the mounting plate.

[0009] Preferably, the output shaft of the second motor is fixedly mounted with a first gear via a coupling, and a second gear that meshes with the first gear is fixedly mounted on the surface of the front rotating shaft.

[0010] Preferably, a rubber ring is fixedly installed on the surface of the roller.

[0011] Preferably, the bottom of the slide plate has an opening for use with the mounting plate.

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

[0013] 1. This automatic clamping fixture for cylindrical grinding machines achieves the effect of clamping cylindrical workpieces of different sizes by placing the cylindrical workpiece inside the U-shaped frame, then starting the first motor, which drives the reciprocating screw to rotate, and the rotation of the reciprocating screw drives the two threaded sleeves to move towards the center at the same time. The movement of the threaded sleeves drives the square frame and the U-shaped frame to move towards the center at the same time.

[0014] 2. This automatic fixture for cylindrical grinding machines, by setting rollers and rubber rings, allows the square frame to move, which in turn moves the slide plate. The movement of the slide plate causes the rubber ring on the roller surface to come into close contact with the surface of the cylindrical workpiece. At the same time, the spring force ensures an interference fit between the rubber ring and the cylindrical workpiece surface. At this point, the second motor can be started, causing the first gear to rotate. The rotation of the first gear meshes with the second gear, driving the shaft to rotate. The rotation of the shaft drives the rollers and rubber ring to rotate. The rotation of the rubber ring, through frictional resistance, drives the cylindrical workpiece to rotate, achieving the effect of automatically adjusting the angle of the cylindrical workpiece. Attached Figure Description

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

[0016] Figure 2 This is a cross-sectional view of the base structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the spring, first gear, and movable opening structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first slider, the first gear, and the second gear of this utility model.

[0019] In the diagram: 1. Base; 2. First motor; 3. Reciprocating lead screw; 4. Threaded sleeve; 5. Square frame; 6. U-shaped frame; 7. Slide plate; 8. First slider; 9. Rotating shaft; 10. Roller; 11. Rubber ring; 12. Spring; 13. Mounting plate; 14. Second motor; 15. First gear; 16. Second gear; 17. Slide; 18. Second slider; 19. Movable opening. 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] Example 1

[0022] Please refer to Figure 1-4 As shown, this utility model provides an automatic fixture for an external cylindrical grinding machine, including a base 1. A first motor 2 is fixedly installed on the top of the base 1. The first motor 2 is a servo motor. A reciprocating screw 3 is fixedly installed on the output shaft of the first motor 2 through a coupling. Threaded sleeves 4 are threadedly connected to both sides of the surface of the reciprocating screw 3. A square frame 5 is fixedly installed on the top of the left threaded sleeve 4, and a U-shaped frame 6 is fixedly installed on the top of the right threaded sleeve 4.

[0023] Specifically, the top of the base 1 is provided with a sliding groove 17, and the two sides inside the sliding groove 17 are slidably connected to the second slider 18. The top of the second slider 18 is fixedly connected to the bottom of the threaded sleeve 4. By setting the first motor 2, and by placing the cylindrical workpiece inside the U-shaped frame 6, and then starting the first motor 2, the first motor 2 drives the reciprocating screw 3 to rotate. The rotation of the reciprocating screw 3 drives the two threaded sleeves 4 to move towards the middle at the same time. The movement of the threaded sleeves 4 drives the square frame 5 and the U-shaped frame 6 to move towards the middle at the same time, thereby achieving the effect of clamping cylindrical workpieces of different sizes.

[0024] Specifically, a sliding plate 7 is fixedly installed at both the front and rear of the square frame 5. A first slider 8 is slidably connected inside the sliding plate 7. A rotating shaft 9 is rotatably connected to the surface of the first slider 8 via a bearing. A roller 10 is fixedly installed at one end of the rotating shaft 9. A spring 12 is welded to one side of the first slider 8, and one end of the spring 12 is welded to one side of the inner cavity of the sliding plate 7. A mounting plate 13 is fixedly installed at the bottom of the front first slider 8. The bottom of the mounting plate 13 penetrates the sliding plate 7 and extends to the outside of the sliding plate 7. A second motor 14, which is a servo motor, is fixedly installed on the surface of the mounting plate 13. A first gear 15 is fixedly installed on the output shaft of the second motor 14 via a coupling. A second gear 16, which meshes with the first gear 15, is fixedly installed on the surface of the front rotating shaft 9. A rubber ring 11 is fixedly installed on the surface of the wheel 10. The bottom of the slide plate 7 has an opening 19 for use with the mounting plate 13. By setting the roller 10 and the rubber ring 11, the slide plate 7 can be moved when the square frame 5 moves. The movement of the slide plate 7 makes the rubber ring 11 on the surface of the roller 10 fit tightly against the surface of the cylindrical workpiece. At the same time, the spring 12 makes the rubber ring 11 and the surface of the cylindrical workpiece have an interference fit through the elastic force. At this time, the second motor 14 can be started to drive the first gear 15 to rotate. The rotation of the first gear 15 drives the rotating shaft 9 to rotate through meshing with the second gear 16. The rotation of the rotating shaft 9 drives the roller 10 and the rubber ring 11 to rotate. The rotation of the rubber ring 11 drives the cylindrical workpiece to rotate through frictional resistance, thereby achieving the effect of automatically adjusting the angle of the cylindrical workpiece.

[0025] Working Principle: This utility model is an automatic clamping fixture for an external cylindrical grinding machine. A cylindrical workpiece is placed inside a U-shaped frame 6. The first motor 2 is then started, driving a reciprocating screw 3 to rotate. The reciprocating screw 3 rotates, causing two threaded sleeves 4 to move simultaneously towards the center. The movement of the threaded sleeves 4 causes a square frame 5 and a U-shaped frame 6 to move simultaneously towards the center, thus achieving the clamping effect for cylindrical workpieces of different sizes. Simultaneously, the movement of the square frame 5 causes a sliding plate 7 to move, making the rubber ring 11 on the surface of the roller 10 fit tightly against the surface of the cylindrical workpiece. At the same time, the spring 12, through its elasticity, ensures an interference fit between the rubber ring 11 and the surface of the cylindrical workpiece. At this point, the second motor 14 is started, causing the first gear 15 to rotate. The rotation of the first gear 15, through meshing with the second gear 16, drives a rotating shaft 9 to rotate. The rotation of the rotating shaft 9 drives the roller 10 and the rubber ring 11 to rotate. The rotation of the rubber ring 11, through frictional resistance, causes the cylindrical workpiece to rotate, achieving the effect of automatically adjusting the angle of the cylindrical workpiece.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An automatic fixture for an external cylindrical grinding machine, comprising a base (1), characterized in that: The base (1) is fixedly mounted with a first motor (2), and the output shaft of the first motor (2) is fixedly mounted with a reciprocating screw (3) through a coupling. Both sides of the surface of the reciprocating screw (3) are threadedly connected with threaded sleeves (4). A square frame (5) is fixedly mounted on the top of the threaded sleeve (4) on the left side, and a U-shaped frame (6) is fixedly mounted on the top of the threaded sleeve (4) on the right side. The top of the base (1) is provided with a groove (17), and the two sides inside the groove (17) are slidably connected with a second slider (18), and the top of the second slider (18) is fixedly connected to the bottom of the threaded sleeve (4).

2. The automatic fixture for an external cylindrical grinding machine according to claim 1, characterized in that: The front and rear of the square frame (5) are fixedly installed with sliding plates (7). The inside of the sliding plate (7) is slidably connected to a first slider (8). The surface of the first slider (8) is rotatably connected to a rotating shaft (9) through a bearing. A roller (10) is fixedly installed at one end of the rotating shaft (9). A spring (12) is welded to one side of the first slider (8). One end of the spring (12) is welded to one side of the inner cavity of the sliding plate (7).

3. An automatic fixture for an external cylindrical grinding machine according to claim 2, characterized in that: A mounting plate (13) is fixedly installed at the bottom of the first slider (8) on the front side. The bottom of the mounting plate (13) passes through the slide plate (7) and extends to the outside of the slide plate (7). A second motor (14) is fixedly installed on the surface of the mounting plate (13).

4. An automatic fixture for an external cylindrical grinding machine according to claim 3, characterized in that: The output shaft of the second motor (14) is fixedly mounted with a first gear (15) via a coupling, and a second gear (16) that meshes with the first gear (15) is fixedly mounted on the surface of the front rotating shaft (9).

5. An automatic fixture for an external cylindrical grinding machine according to claim 2, characterized in that: A rubber ring (11) is fixedly installed on the surface of the roller (10).

6. An automatic fixture for an external cylindrical grinding machine according to claim 3, characterized in that: The bottom of the slide plate (7) is provided with an movable opening (19) that is used in conjunction with the mounting plate (13).

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