A grinding wheel magazine mechanism

Abstract

The utility model provides a kind of grinding wheel storehouse mechanism, belong to mechanical technical field.It solves the problem of poor stability of existing grinding wheel storehouse.This grinding wheel storehouse mechanism includes base and the turntable of horizontal setting in the top of base, is equipped with a circle cutter holder on turntable, cutter holder includes the mouthful for clamping grinding wheel handle, base is equipped with driving component, cutter holder is vertically set, and mouthful is set upwards;Base top is formed with the connecting hole that is vertically through, connecting hole is vertically equipped with connecting shaft in, connecting shaft upper end is fixedly connected with turntable, driving component is used to drive connecting shaft rotation;Connecting hole is sequentially equipped with ball bearing and plane bearing from top to bottom, ball bearing includes with the outer ring of base fixed connection and with the inner ring of connecting shaft fixed connection, plane bearing includes with the lower ring of base fixed connection and with the upper ring of connecting shaft fixed connection, and inner ring bottom wall is pressed on upper ring top wall.This grinding wheel storehouse mechanism is stable in work.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a grinding wheel magazine mechanism. Background Technology

[0002] CNC grinding machines are machine tools that use CNC technology to grind the surface of workpieces using grinding wheels. Most grinding machines use high-speed rotating grinding wheels for grinding. To increase the versatility and efficiency of processing, a tool magazine is usually required to hold the cutting tools. This tool magazine is usually used in conjunction with the machine tool spindle or a robot to automatically pick up and change tools.

[0003] Existing grinding wheel magazine structures, such as the four-station tool magazine structure disclosed in the Chinese Patent Database (application number: 202323248871.9), include a working assembly. The working assembly includes a base, a cylinder mounting seat on the left side of the upper surface of the base, a displacement cylinder mounted on the right side wall of the cylinder mounting seat, a slide plate fixedly connected to one end of the piston rod of the displacement cylinder, a four-station divider on the right side wall of the slide plate, a reducer mounted on the outer side wall of the four-station divider, a motor mounted on the lower surface of the reducer, one end of the output shaft of the motor connected to the input shaft of the reducer, a tool disc fixedly connected to the output shaft of the reducer, four positioning blocks symmetrically mounted on the right side wall of the tool disc, two grippers symmetrically mounted on the outer side wall of each positioning block, a spring mounted between opposite sides of the two grippers, a tool bar on the inner side wall of each gripper, and a grinding wheel mounted on the outer side wall of the tool bar.

[0004] In the above tool magazine structure, the tool disc is directly connected to the output shaft of the reducer. Since the tool disc is subjected to a large radial force when picking up and putting down the tool, this force is directly transmitted to the reducer, which will gradually cause damage to the reducer and affect the working stability of the entire tool magazine. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a stable grinding wheel magazine mechanism.

[0006] The objective of this utility model can be achieved through the following technical solution: A grinding wheel magazine mechanism includes a base and a turntable horizontally arranged above the base. A ring of tool clips is provided on the turntable, and the tool clips include a clamp for holding the grinding wheel tool holder. A driving component is installed on the base. The tool clips are vertically arranged, and the clamps are facing upwards. A vertically penetrating connecting hole is formed on the top of the base, and a connecting shaft is vertically arranged in the connecting hole. The upper end of the connecting shaft is fixedly connected to the turntable, and the driving component is used to drive the connecting shaft to rotate. A ball bearing and a plane bearing are arranged sequentially from top to bottom in the connecting hole. The ball bearing includes an outer ring fixedly connected to the base and an inner ring fixedly connected to the connecting shaft. The plane bearing includes a lower ring fixedly connected to the base and an upper ring fixedly connected to the connecting shaft, and the bottom wall of the inner ring abuts against the top wall of the upper ring.

[0007] In use, the drive unit drives the turntable to rotate, causing one of the tool holders to rotate to the loading station. Then, the machine tool spindle feeds and grabs the grinding wheel tool holder. The machine tool spindle then lifts up to disengage the grinding wheel tool holder from the corresponding tool holder. After that, the machine tool spindle returns to the machining station, and the drive unit drives the turntable to rotate again, causing the subsequent tool holders to rotate to the loading station in sequence.

[0008] The connecting shaft is rotatably mounted on the base using both ball bearings and plane bearings. This not only enhances the rotational stability of the connecting shaft, but also provides upward support to the inner ring of the ball bearings using the plane bearings. This allows the rotating unit, composed of ball bearings and plane bearings, to stably withstand the axial force generated by inserting and removing the grinding wheel holder, effectively preventing deformation of the rotating unit and ensuring the rotational accuracy and stability of the connecting shaft. This, in turn, ensures the stable operation of the grinding wheel magazine mechanism.

[0009] In the aforementioned grinding wheel magazine mechanism, the upper outer wall of the connecting shaft has an annular flange, which is coaxially arranged with the connecting shaft. The annular flange presses against the bottom wall of the turntable, and the connecting shaft is fixed to the turntable via the annular flange. This design facilitates the connection between the connecting shaft and the turntable.

[0010] In the aforementioned grinding wheel magazine mechanism, the top wall of the inner ring presses against the bottom wall of the annular flange to increase the support strength of the rotating unit for the connecting shaft, thereby making the grinding wheel magazine mechanism operate more stably.

[0011] In the aforementioned grinding wheel magazine mechanism, the tool holder is fixed to the outer wall of the turntable so that the turntable can accommodate more tool holders, thus improving its practicality.

[0012] In the aforementioned grinding wheel magazine mechanism, a connecting plate is vertically fixed to the outer wall of the turntable, and the lower end of the tool holder is abutted and fixed to the upper side of the connecting plate. This design facilitates the installation and positioning of the tool holder.

[0013] In the above-mentioned grinding wheel magazine mechanism, the driving components include a motor and a gearbox. The input shaft of the gearbox is fixed to the motor spindle, the connecting shaft is hollow, and the output shaft of the gearbox is inserted into the connecting shaft. The two are connected by a flat key or spline, which has the advantages of stable transmission and simple structure.

[0014] Compared with existing technologies, this grinding wheel magazine mechanism features a connecting shaft that is rotatably mounted on a base using both ball bearings and planar bearings. This enhances the rotational stability of the connecting shaft, while the planar bearings provide upward support to the inner ring of the ball bearings. This allows the rotating unit, composed of ball bearings and planar bearings, to stably withstand the axial force generated by inserting and removing the grinding wheel tool holder, effectively preventing deformation of the rotating unit and ensuring the rotational accuracy and stability of the connecting shaft. Consequently, this ensures the stable operation of the grinding wheel magazine mechanism. Attached Figure Description

[0015] Figure 1This is a three-dimensional schematic diagram of the grinding wheel magazine mechanism.

[0016] Figure 2 This is a cross-sectional schematic diagram of the grinding wheel magazine mechanism.

[0017] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0018] In the diagram, 1. Base; 1a. Connecting hole; 2. Turntable; 3. Tool holder; 3a. Clamping jaw; 4. Grinding wheel holder; 5. Drive component; 5a. Motor; 5b. Gearbox; 6. Connecting shaft; 6a. Annular flange; 7. Ball bearing; 7a. Outer ring; 7b. Inner ring; 8. Surface bearing; 8a. Lower ring; 8b. Upper ring; 9. Connecting plate. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] Example 1: As Figure 1 As shown, this grinding wheel magazine mechanism includes a base 1 and a turntable 2 horizontally positioned above the base 1.

[0021] in, The turntable 2 is provided with a ring of tool holders 3 evenly spaced around its circumference. The tool holders 3 are existing products, and preferably HSK tool holders 3 are used. The tool holders 3 are vertically arranged and include a clamping jaw 3a for holding the grinding wheel tool holder 4, with the clamping jaw 3a facing upwards.

[0022] A drive component 5 is mounted on the base 1. A vertically penetrating connecting hole 1a is formed on the top of the base 1. A connecting shaft 6 is vertically arranged inside the connecting hole 1a, and the connecting shaft 6 and the turntable 2 are coaxially arranged. The upper end of the connecting shaft 6 is fixedly connected to the turntable 2, and the drive component 5 is used to drive the connecting shaft 6 to rotate.

[0023] like Figures 1 to 3 As shown, a ball bearing 7 and a planar bearing 8 are arranged sequentially from top to bottom within the connecting hole 1a, and both the ball bearing 7 and the planar bearing 8 are existing products. The ball bearing 7 includes an outer ring 7a fixedly connected to the base 1 and an inner ring 7b fixedly connected to the connecting shaft 6. Preferably, both the outer ring 7a and the inner ring 7b are fixedly connected to the inner wall of the connecting hole 1a and the outer wall of the connecting shaft 6 respectively by an interference fit. The planar bearing 8 includes a lower ring 8a fixedly connected to the base 1 and an upper ring 8b fixedly connected to the connecting shaft 6, with the bottom wall of the inner ring 7b pressing against the top wall of the upper ring 8b. Preferably, both the upper ring 8b and the lower ring 8a are fixedly connected to the outer wall of the connecting shaft 6 and the inner wall of the connecting hole 1a respectively by an interference fit.

[0024] In use, the drive unit 5 drives the turntable 2 to rotate, causing one of the tool holders 3 to rotate to the loading station. Then, the machine tool spindle feeds and grabs the grinding wheel tool holder 4. Then, the machine tool spindle lifts up to disengage the grinding wheel tool holder 4 from the corresponding tool holder 3. Then, the machine tool spindle returns to the machining station, and the drive unit 5 drives the turntable 2 to rotate again, causing the subsequent tool holders 3 to rotate to the loading station in sequence.

[0025] The connecting shaft 6 is rotatably mounted on the base 1 using both ball bearings 7 and plane bearings 8. This not only enhances the rotational stability of the connecting shaft 6, but also allows the plane bearings 8 to support the inner ring 7b of the ball bearings 7. This ensures that the rotating unit composed of the ball bearings 7 and the plane bearings 8 can stably withstand the axial force generated by inserting and removing the grinding wheel holder 4, effectively preventing deformation of the rotating unit and ensuring the rotational accuracy and stability of the connecting shaft 6. This, in turn, ensures the stable operation of the grinding wheel magazine mechanism.

[0026] In this embodiment, The inner wall of the connecting hole 1a is formed with an upper step that matches the outer ring 7a and a lower step that matches the lower ring 8a, and both the upper and lower steps are annular. The outer ring 7a is embedded in the upper step and pressed against the bottom wall of the upper step to enhance the axial limiting effect of the ball bearing 7; the lower ring 8a is embedded in the lower step and pressed against the bottom wall of the lower step to enhance the installation stability of the lower ring 8a.

[0027] like Figure 3 As shown, the connection between the connecting shaft 6 and the turntable 2 is as follows: The upper outer wall of the connecting shaft 6 has an annular flange 6a, which is coaxially arranged with the connecting shaft 6. The annular flange 6a presses against the bottom wall of the turntable 2, and the connecting shaft 6 is fixedly connected to the turntable 2 via the annular flange 6a. This design facilitates the connection between the connecting shaft 6 and the turntable 2. Preferably, the annular flange 6a is fixed to the turntable 2 by a ring of bolts. Of course, welding the annular flange 6a to the turntable 2 is also possible. Furthermore, the top wall of the inner ring 7b presses against the bottom wall of the annular flange 6a to increase the support strength of the rotating unit for the connecting shaft 6, making the grinding wheel magazine mechanism operate more stably.

[0028] The tool holder 3 is installed as follows: The tool holder 3 is fixed to the outer wall of the turntable 2, allowing the turntable 2 to accommodate more tool holders 3, thus improving practicality. Specifically, a connecting plate 9 is vertically fixed to the outer wall of the turntable 2, and the lower end of the tool holder 3 is fixed against the upper side of the connecting plate 9. This design facilitates the installation and positioning of the tool holder 3. In the actual product, the tool holder 3 is fixed to the connecting plate 9 by multiple screws.

[0029] like Figure 1As shown, the drive component 5 includes a motor 5a and a gearbox 5b. Preferably, the motor 5a and gearbox 5b are vertically arranged, with the gearbox 5b positioned between the motor 5a and the turntable 2. The input shaft of the gearbox 5b is fixedly connected to the main shaft of the motor 5a. The connecting shaft 6 is hollow, and the output shaft of the gearbox 5b is inserted into the connecting shaft 6. The two are connected by a key or spline, which has advantages such as stable transmission and simple structure. Preferably, the input shaft of the gearbox 5b is connected to the connecting shaft 6 by a key.

[0030] In actual products, the ball bearing type 7 is a deep groove ball bearing.

[0031] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1. The difference is that the driving component 5 is a geared motor 5a, and the main shaft of the geared motor 5a is connected to the connecting shaft 6 through a coupling.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A grinding wheel magazine mechanism, comprising a base (1) and a turntable (2) horizontally disposed above the base (1), the turntable (2) having a ring of tool holders (3), the tool holders (3) including clamps (3a) for holding grinding wheel tool holders (4), and a driving component (5) mounted on the base (1), characterized in that, The blade holder (3) is set vertically, and the clamping opening (3a) is set upward; the top of the base (1) is formed with a vertically penetrating connecting hole (1a), and a connecting shaft (6) is vertically arranged in the connecting hole (1a). The upper end of the connecting shaft (6) is fixedly connected to the turntable (2), and the driving component (5) is used to drive the connecting shaft (6) to rotate; a ball bearing (7) and a plane bearing (8) are arranged sequentially from top to bottom in the connecting hole (1a). The ball bearing (7) includes an outer ring (7a) fixedly connected to the base (1) and an inner ring (7b) fixedly connected to the connecting shaft (6). The plane bearing (8) includes a lower ring (8a) fixedly connected to the base (1) and an upper ring (8b) fixedly connected to the connecting shaft (6), and the bottom wall of the inner ring (7b) presses against the top wall of the upper ring (8b).

2. The grinding wheel magazine mechanism according to claim 1, characterized in that, The upper outer wall of the connecting shaft (6) has an annular flange (6a), and the annular flange (6a) and the connecting shaft (6) are coaxially arranged. The annular flange (6a) presses against the bottom wall of the turntable (2), and the connecting shaft (6) is fixed to the turntable (2) through the annular flange (6a).

3. The grinding wheel magazine mechanism according to claim 2, characterized in that, The top wall of the inner ring (7b) presses against the bottom wall of the annular flange (6a).

4. The grinding wheel magazine mechanism according to claim 1, characterized in that, The aforementioned blade holder (3) is fixed on the outer wall of the turntable (2).

5. The grinding wheel magazine mechanism according to claim 4, characterized in that, A connecting plate (9) is vertically fixed on the outer wall of the turntable (2), and the lower end of the knife clamp (3) is attached to and fixed on one side of the upper end of the connecting plate (9).

6. The grinding wheel magazine mechanism according to claim 1, characterized in that, The drive unit (5) includes a motor (5a) and a gearbox (5b). The input shaft of the gearbox (5b) is fixed to the main shaft of the motor (5a). The connecting shaft (6) is hollow. The output shaft of the gearbox (5b) is inserted into the connecting shaft (6) and the two are connected by a flat key or spline.

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