A grinding wheel replacing mechanism of a numerical control grinding machine

Abstract

This utility model relates to the field of CNC grinding machine technology and discloses a grinding wheel changing mechanism for a CNC grinding machine, comprising: a drive box, a lifting plate disposed on one side of the drive box, and an n-shaped bearing plate movably disposed above the lifting plate; a tensioning assembly including a fixing bar, the fixing bar being fixedly installed on the bottom surface of the lifting plate at the end away from the drive box, a pair of fixing rings being symmetrically fixedly installed at both ends of the top surface of the fixing bar, a pair of winding rollers being fixedly installed at the top of the drive box, a dual-axis winding motor being disposed between the pair of winding rollers, and connecting steel ropes being attached to each of the pair of fixing rings, with the other end of the connecting steel ropes being attached to the winding rollers. In this grinding wheel changing mechanism for the CNC grinding machine, when the lifting plate rises, the dual-axis winding motor drives the pair of winding rollers to rotate forward, winding the connecting steel ropes; when the lifting plate descends, the dual-axis winding motor drives the pair of winding rollers to rotate in reverse, releasing the connecting steel ropes. The connecting steel ropes are always in a taut state, ensuring the stability of the lifting plate during movement.

Description

Technical Field

[0001] This utility model relates to the field of CNC grinding machine technology, and in particular to a grinding wheel changing mechanism for a CNC grinding machine. Background Technology

[0002] In CNC grinding, the grinding wheel is a key cutting element, and its wear or replacement requirements are frequent. Grinding wheel replacement still relies on manual operation, but the grinding wheels of centerless grinders are relatively heavy, and special attention must be paid to safety during installation, requiring the use of a crane to lift the grinding wheel.

[0003] Announcement No. CN222767672U discloses a grinding wheel changing device for replacing the grinding wheel body on a grinding machine. The device includes a support assembly and a clamp. The support assembly includes a column and a crossbar. The upper end of the column is connected to one end of the crossbar. A track is provided below the crossbar, and an electric hoist is mounted on the track. A hook is suspended below the electric hoist. The clamp includes a column and a mounting plate. A lifting ring is provided at the upper end of the column, and the lifting ring is connected to the hook. The lower end of the column is connected to the mounting plate. The mounting plate has multiple through holes (I) with bolts inside. A groove is provided in the center of the mounting plate, and a through hole (II) is provided inside the groove. A push rod is provided inside the through hole (II). The clamp is driven by the support assembly to pick up and put down the grinding wheel body, resulting in high efficiency.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: the above-mentioned device fixes the mounting plate and the grinding wheel body with bolts, and then controls the electric hoist to drive the clamp and the grinding wheel body to move, so as to realize the replacement of the grinding wheel body. During the hoisting process, the stability of the grinding wheel cannot be guaranteed, and it is easy to shake. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of not being able to guarantee the stability of the grinding wheel. To this end, we propose a grinding wheel changing mechanism for CNC grinding machines.

[0006] To achieve the above objectives, this application adopts the following technical solution: a grinding wheel changing mechanism for a CNC grinding machine, comprising: a drive box, a lifting plate provided on one side of the drive box, an n-shaped support plate movably provided above the lifting plate, a grinding wheel changing mechanism provided above the n-shaped support plate, a drive assembly for driving the lifting plate to move up and down inside the drive box, a tensioning assembly provided at the top of the drive box, and a support assembly provided above the n-shaped support plate.

[0007] The tensioning assembly includes a fixing bar, which is fixedly installed on the bottom surface of the lifting plate at the end away from the drive box. A pair of fixing rings are symmetrically fixedly installed at both ends of the top surface of the fixing bar. A pair of take-up rollers are fixedly installed at the top of the drive box. The pair of fixing rings corresponds one-to-one with the pair of take-up rollers. A dual-shaft take-up motor is fixedly installed at the top of the drive box between the pair of take-up rollers. The output shaft of the dual-shaft take-up motor is coaxially fixedly connected to the rotation shaft of the pair of take-up rollers. A connecting steel rope is attached to each of the pair of fixing rings, and the other end of the connecting steel rope is attached to the corresponding take-up roller.

[0008] Preferably, a pair of guide wheels are fixedly installed on the side of the drive box near the lifting plate, and the pair of guide wheels corresponds one-to-one with a pair of winding rollers, with the connecting steel rope passing through the upper surface of the corresponding guide wheel.

[0009] Preferably, the drive assembly includes a forward and reverse motor, which is fixedly installed at the bottom of the drive box. The output shaft of the forward and reverse motor is coaxially fixedly connected to a threaded rod. The top end of the threaded rod is rotatably installed at the top of the drive box. Several limit rods are fixedly installed inside the drive box. A threaded sleeve block is threadedly fitted on the threaded rod. The threaded sleeve block is slidably fitted on the several limit rods. A limit assembly is provided between the drive box and the lifting plate.

[0010] Preferably, the limiting component includes a plurality of first limiting grooves, which are formed on the side of the drive box near the lifting plate. Each of the plurality of first limiting grooves is slidably provided with a fixed connecting block. One end of the plurality of fixed connecting blocks is fixedly connected to the lifting plate, and the other end of the plurality of fixed connecting blocks is fixedly connected to a threaded sleeve block.

[0011] Preferably, a pair of L-shaped fixing blocks are symmetrically fixed on both sides of the lifting plate near the drive box. A pair of sliding grooves are opened on the side of the drive box near the lifting plate. The pair of L-shaped fixing blocks corresponds to the pair of sliding grooves. The vertical section of the L-shaped fixing block is slidably set in the corresponding sliding groove. The horizontal section of the L-shaped fixing block is set in the drive box. A number of rotating balls are rotatably installed on the inner side wall of the horizontal section of the L-shaped fixing block. The outer side wall of the number of rotating balls is in contact with the inner side wall of the drive box.

[0012] Preferably, the bearing component includes a fixed recess, which is fixedly installed on the top surface of the n-shaped bearing plate. The top surface of the fixed recess is an inwardly concave arc surface. Several anti-slip grooves are evenly spaced on the top surface of the fixed recess. The outer wall of the replacement grinding wheel is in contact with the top surface of the fixed recess. U-shaped limit frames are symmetrically rotated and installed at both ends of the top surface of the fixed recess. The replacement grinding wheel is set between a pair of U-shaped limit frames.

[0013] Preferably, the upper surface and side walls of the lifting plate are provided with a number of T-shaped sliding grooves, and a number of T-shaped fixed sliders are evenly fixedly installed on the inner side wall of the n-shaped bearing plate. The number of T-shaped sliding grooves corresponds one-to-one with the T-shaped fixed sliders, and the T-shaped fixed sliders are slidably set in the corresponding T-shaped sliding grooves.

[0014] Preferably, a counterweight base is fixedly installed at the bottom of the drive box, and casters are fixedly installed at the four corners of the bottom of the counterweight base.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] In this invention, one end of the connecting steel rope is tied to a fixed lifting ring, and the other end of the connecting steel rope passes through a guide wheel and is tied to a take-up roller. The end of the lifting plate is suspended by a fixing bar. When the lifting plate rises, the dual-shaft take-up motor drives a pair of take-up rollers to rotate forward, thereby winding the connecting steel rope. When the lifting plate descends, the dual-shaft take-up motor drives a pair of take-up rollers to rotate in reverse, thereby releasing the connecting steel rope. The connecting steel rope is always in a taut state, ensuring the stability of the lifting plate when it moves, that is, ensuring the stability of the grinding wheel on it when it moves.

[0017] In this invention, a forward and reverse motor drives a threaded rod to rotate. As the threaded rod rotates, the threaded sleeve block drives the lifting plate to move up and down. When the lifting plate moves, the fixed connecting block slides in the first limiting groove, and the L-shaped fixed block slides in the sliding groove. At the same time, the outer wall of the rotating ball is in contact with the inner wall of the drive box, and the rotating ball rotates to ensure the stability of the threaded sleeve block and the lifting plate when they move. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the tensile component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the drive component structure of this utility model;

[0023] Figure 5 This is a top view of the drive component of this utility model.

[0024] Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point A;

[0025] Figure 7 This is a schematic diagram of the load-bearing component structure of this utility model.

[0026] Legend: 1. Drive box; 11. Counterweight base; 12. Casters; 2. Lifting plate; 21. T-shaped slide rail; 3. N-shaped bearing plate; 31. T-shaped fixed slider; 4. Replacement grinding wheel; 5. Drive assembly; 51. Forward and reverse motor; 52. Threaded rod; 53. Limiting rod; 54. Threaded sleeve block; 55. Limiting assembly; 551. First limiting groove; 552. Fixed connecting block; 553. L-shaped fixing block; 554. Sliding groove; 555. Rotating ball; 6. Tensioning assembly; 61. Fixing strip; 62. Fixing ring; 63. Take-up roller; 64. Dual-axis take-up motor; 65. Connecting steel rope; 66. Guide wheel; 7. Bearing assembly; 71. Fixing recess; 72. Anti-slip groove; 73. U-shaped limiting frame. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] Reference Figures 1-3 As shown, this utility model provides a technical solution: a grinding wheel changing mechanism for a CNC grinding machine, comprising: a drive box 1, a lifting plate 2 provided on one side of the drive box 1, an n-shaped support plate 3 movably provided above the lifting plate 2, a grinding wheel changing 4 provided above the n-shaped support plate 3, a drive assembly 5 for driving the lifting plate 2 to move up and down provided inside the drive box 1, a tensioning assembly 6 provided at the top of the drive box 1, and a support assembly 7 provided above the n-shaped support plate 3;

[0029] The stretching assembly 6 includes a fixing bar 61, which is fixedly installed on the bottom surface of the lifting plate 2 away from the drive box 1. A pair of fixing rings 62 are symmetrically fixedly installed on both ends of the top surface of the fixing bar 61. A pair of take-up rollers 63 are fixedly installed on the top of the drive box 1. The pair of fixing rings 62 correspond one-to-one with the pair of take-up rollers 63. A dual-axis take-up motor 64 is fixedly installed on the top of the drive box 1 between the pair of take-up rollers 63. The output shaft of the dual-axis take-up motor 64 is coaxially fixedly connected to the rotation shaft of the pair of take-up rollers 63. A connecting steel rope 65 is tied to each of the pair of fixing rings 62. The other end of the connecting steel rope 65 is tied to the corresponding take-up roller 63.

[0030] A pair of guide wheels 66 are fixedly installed on the side of the drive box 1 near the lifting plate 2. The pair of guide wheels 66 correspond one-to-one with a pair of take-up rollers 63. The connecting steel rope 65 passes through the upper surface of the corresponding guide wheel 66. The pair of guide wheels 66 guide the connecting steel rope 65.

[0031] Reference Figures 1-3As shown in this embodiment: one end of the connecting steel rope 65 is tied to the fixed lifting ring 62, and the other end of the connecting steel rope 65 passes through the guide wheel 66 and is tied to the winding roller 63. The end of the lifting plate 2 is suspended by the fixing bar 61. When the lifting plate 2 rises, the dual-shaft winding motor 64 drives a pair of winding rollers 63 to rotate forward, thereby winding the connecting steel rope 65. When the lifting plate 2 falls, the dual-shaft winding motor 64 drives a pair of winding rollers 63 to rotate in reverse, thereby releasing the connecting steel rope 65. The connecting steel rope 65 is always in a taut state to ensure the stability of the lifting plate 2 when it moves.

[0032] Reference Figures 1-2 and Figures 4-6 As shown, this utility model provides a technical solution: the drive assembly 5 includes a forward and reverse motor 51, which is fixedly installed at the bottom of the drive box 1. The output shaft of the forward and reverse motor 51 is coaxially fixedly connected to a threaded rod 52. The top end of the threaded rod 52 is rotatably installed at the top end of the drive box 1. Several limiting rods 53 are fixedly installed inside the drive box 1. A threaded sleeve block 54 is threadedly sleeved on the threaded rod 52. The threaded sleeve block 54 is slidably sleeved on the several limiting rods 53. A limiting assembly 55 is provided between the drive box 1 and the lifting plate 2.

[0033] The limiting component 55 includes a plurality of first limiting grooves 551, which are opened on the side of the drive box 1 near the lifting plate 2. Each of the plurality of first limiting grooves 551 is slidably provided with a fixed connecting block 552. One end of the plurality of fixed connecting blocks 552 is fixedly connected to the lifting plate 2, and the other end of the plurality of fixed connecting blocks 552 is fixedly connected to the threaded sleeve block 54.

[0034] A pair of L-shaped fixing blocks 553 are symmetrically fixed on both sides of the lifting plate 2 near the drive box 1. A pair of sliding grooves 554 are opened on the side of the drive box 1 near the lifting plate 2. The pair of L-shaped fixing blocks 553 correspond one-to-one with the pair of sliding grooves 554. The vertical section of the L-shaped fixing block 553 is slidably set in the corresponding sliding groove 554. The horizontal section of the L-shaped fixing block 553 is set in the drive box 1. Several rotating balls 555 are rotatably installed on the inner side wall of the horizontal section of the L-shaped fixing block 553. The outer side wall of the several rotating balls 555 is in contact with the inner side wall of the drive box 1.

[0035] Reference Figures 1-2 and Figures 4-6 As shown in this embodiment: the forward and reverse motor 51 drives the threaded rod 52 to rotate. As the threaded rod 52 rotates, the threaded sleeve block 54 drives the lifting plate 2 to rise and fall. When the lifting plate 2 moves, the fixed connecting block 552 slides in the first limiting groove 551, and the L-shaped fixing block 553 slides in the sliding groove 554. At the same time, the outer wall of the rotating ball 555 is in contact with the inner wall of the drive box 1, and the rotating ball 555 rotates to ensure the stability of the threaded sleeve block 54 and the lifting plate 2 when they move.

[0036] Reference Figures 1-2 and Figure 7 As shown, this utility model provides a technical solution: the bearing component 7 includes a fixing recess 71, which is fixedly installed on the top surface of the n-shaped bearing plate 3. The top surface of the fixing recess 71 is an inwardly concave arc surface. A plurality of anti-slip grooves 72 are evenly spaced on the top surface of the fixing recess 71 to provide anti-slip treatment for the replacement grinding wheel 4. The outer side wall of the replacement grinding wheel 4 is in contact with the top surface of the fixing recess 71. U-shaped limiting frames 73 are symmetrically and rotatably installed at both ends of the top surface of the fixing recess 71. The replacement grinding wheel 4 is set between a pair of U-shaped limiting frames 73.

[0037] The upper surface and side walls of the lifting plate 2 are provided with several T-shaped sliding grooves 21. Several T-shaped fixed sliders 31 are evenly fixedly installed on the inner side wall of the n-shaped bearing plate 3. The T-shaped sliding grooves 21 correspond one-to-one with the T-shaped fixed sliders 31. The T-shaped fixed sliders 31 are slidably set in the corresponding T-shaped sliding grooves 21.

[0038] A counterweight base 11 is fixedly installed at the bottom of the drive box 1 to ensure the overall stability of the device. Universal wheels 12 are fixedly installed at the four corners of the bottom of the counterweight base 11. The universal wheels 12 are equipped with a clamp structure. After the device is moved to a suitable position, the clamp structure locks the universal wheels 12 to fix the device as a whole.

[0039] Reference Figures 1-2 and Figure 7 As shown in this embodiment: the replacement grinding wheel 4 is placed on the top surface of the fixed concave block 71, and the U-shaped limiting frame 73 is rotated so that the replacement grinding wheel 4 is placed in a pair of U-shaped limiting frames 73. The pair of U-shaped limiting frames 73 limit the replacement grinding wheel 4. After the lifting plate 2 moves to the appropriate position, the n-shaped bearing plate 3 is pushed so that the T-shaped fixed slider 31 slides in the T-shaped slide groove 21, pushing the replacement grinding wheel 4 to the appropriate position.

[0040] It should be noted that the caliper structure on the universal wheel 12 is an existing mature technology and is not a key technical point of this utility model, so it will not be elaborated on here.

[0041] Working principle: The replacement grinding wheel 4 is placed on the top surface of the fixed concave block 71. The U-shaped limiting frame 73 is rotated so that the replacement grinding wheel 4 is placed inside a pair of U-shaped limiting frames 73, which limit the replacement grinding wheel 4. The forward and reverse motor 51 drives the threaded rod 52 to rotate forward, and the threaded sleeve block 54 drives the lifting plate 2 to move upward. The dual-shaft winding motor 64 drives a pair of winding rollers 63 to rotate forward, realizing the winding of the connecting steel rope 65. The connecting steel rope 65 is always in a taut state. The end of the lifting plate 2 is suspended by the fixing strip 61 to ensure the stability of the lifting plate 2 when it moves. After the lifting plate 2 moves to the appropriate position, the n-shaped bearing plate 3 is pushed so that the T-shaped fixed slider 31 slides in the T-shaped slide groove 21, pushing the replacement grinding wheel 4 to the appropriate position.

[0042] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A grinding wheel changing mechanism for a CNC grinding machine, characterized in that, Includes a drive box (1): a lifting plate (2) is provided on one side of the drive box (1), an n-shaped bearing plate (3) is movably provided above the lifting plate (2), a grinding wheel replacement (4) is provided above the n-shaped bearing plate (3), a drive assembly (5) for driving the lifting plate (2) to move up and down is provided inside the drive box (1), a tensioning assembly (6) is provided at the top of the drive box (1), and a bearing assembly (7) is provided above the n-shaped bearing plate (3); The stretching assembly (6) includes a fixing bar (61), which is fixedly installed on the bottom surface of the lifting plate (2) away from the drive box (1). A pair of fixing rings (62) are symmetrically fixedly installed on both ends of the top surface of the fixing bar (61). A pair of take-up rollers (63) are fixedly installed on the top of the drive box (1). The pair of fixing rings (62) corresponds one-to-one with the pair of take-up rollers (63). A dual-axis take-up motor (64) is fixedly installed on the top of the drive box (1) between the pair of take-up rollers (63). The output shaft of the dual-axis take-up motor (64) is coaxially fixedly connected to the rotation shaft of the pair of take-up rollers (63). A connecting steel rope (65) is tied to each of the pair of fixing rings (62). The other end of the connecting steel rope (65) is tied to the corresponding take-up roller (63).

2. The grinding wheel changing mechanism of the CNC grinding machine according to claim 1, characterized in that: A pair of guide wheels (66) are fixedly installed on the side of the drive box (1) near the lifting plate (2). The pair of guide wheels (66) corresponds one-to-one with a pair of take-up rollers (63). The connecting steel rope (65) passes through the upper surface of the corresponding guide wheel (66).

3. The grinding wheel changing mechanism of the CNC grinding machine according to claim 1, characterized in that: The drive assembly (5) includes a forward and reverse motor (51), which is fixedly installed at the bottom of the drive box (1). The output shaft of the forward and reverse motor (51) is coaxially fixedly connected to a threaded rod (52). The top end of the threaded rod (52) is rotatably installed at the top end of the drive box (1). Several limiting rods (53) are fixedly installed inside the drive box (1). A threaded sleeve block (54) is threaded on the threaded rod (52). The threaded sleeve block (54) is slidably sleeved on the several limiting rods (53). A limiting assembly (55) is provided between the drive box (1) and the lifting plate (2).

4. The grinding wheel changing mechanism of the CNC grinding machine according to claim 3, characterized in that: The limiting component (55) includes a plurality of first limiting grooves (551), which are opened on the side of the drive box (1) near the lifting plate (2). Each of the plurality of first limiting grooves (551) is slidably provided with a fixed connecting block (552). One end of the plurality of fixed connecting blocks (552) is fixedly connected to the lifting plate (2), and the other end of the plurality of fixed connecting blocks (552) is fixedly connected to the threaded sleeve block (54).

5. The grinding wheel changing mechanism of the CNC grinding machine according to claim 4, characterized in that: A pair of L-shaped fixing blocks (553) are symmetrically fixed on both sides of the lifting plate (2) near the drive box (1). A pair of sliding grooves (554) are opened on the side of the drive box (1) near the lifting plate (2). The pair of L-shaped fixing blocks (553) corresponds one-to-one with the pair of sliding grooves (554). The vertical section of the L-shaped fixing block (553) is slidably arranged in the corresponding sliding groove (554). The horizontal section of the L-shaped fixing block (553) is arranged in the drive box (1). A number of rotating balls (555) are rotatably installed on the inner side wall of the horizontal section of the L-shaped fixing block (553). The outer side wall of the number of rotating balls (555) is in contact with the inner side wall of the drive box (1).

6. The grinding wheel changing mechanism of the CNC grinding machine according to claim 1, characterized in that: The bearing component (7) includes a fixed recess (71), which is fixedly installed on the top surface of the n-shaped bearing plate (3). The top surface of the fixed recess (71) is an inwardly concave arc surface. The top surface of the fixed recess (71) is provided with several anti-slip grooves (72) at equal intervals. The outer wall of the replaceable grinding wheel (4) is in contact with the top surface of the fixed recess (71). The two ends of the top surface of the fixed recess (71) are symmetrically rotated and installed with U-shaped limiting frames (73). The replaceable grinding wheel (4) is set between a pair of U-shaped limiting frames (73).

7. The grinding wheel changing mechanism of the CNC grinding machine according to claim 1, characterized in that: The upper surface and side walls of the lifting plate (2) are provided with a number of T-shaped sliding grooves (21). The inner side wall of the n-shaped bearing plate (3) is uniformly and evenly fixed with a number of T-shaped fixed sliders (31). The number of T-shaped sliding grooves (21) corresponds one-to-one with the T-shaped fixed sliders (31). The T-shaped fixed sliders (31) are slidably arranged in the corresponding T-shaped sliding grooves (21).

8. The grinding wheel changing mechanism of the CNC grinding machine according to claim 1, characterized in that: The bottom of the drive box (1) is fixedly installed with a counterweight base (11), and the four corners of the bottom of the counterweight base (11) are fixedly installed with casters (12).

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