Special fixture for cylindrical grinding machine

Abstract

The utility model discloses a special fixture for a cylindrical grinding machine, which comprises a supporting seat, a first motor is arranged on the supporting seat, a driving end of the first motor penetrates through the supporting seat to be fixedly provided with a fixed disc, a plurality of moving grooves are arranged on one side of the fixed disc, moving seats are movably arranged in the moving grooves, one ends of the moving seats penetrate through the moving grooves to be fixedly provided with clamping blocks, and a moving chamber is arranged in the fixed disc. A moving rod is fixedly arranged at one end of the moving seat, one end of the moving rod extends into the movable chamber and is fixedly provided with two limiting rods, a driving seat is movably arranged in the movable chamber, a plurality of limiting frames matched with the limiting rods are fixedly arranged on the outer side of the driving seat, a plurality of springs are fixedly arranged between the driving seat and the movable chamber, and a positioning block is fixedly arranged at one end of the driving seat; a movable plate is arranged on the supporting base in a sliding mode through a track structure, an ejector pin is rotationally arranged on one side of the movable plate, and a bar workpiece can be positioned while being clamped and fixed.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine processing technology, and more specifically, it relates to a special fixture for external cylindrical grinding machines. Background Technology

[0002] Cylindrical grinding machines are precision machine tools used to machine the outer cylindrical surfaces of workpieces. In the grinding process of bar stock, clamping the bar stock is a crucial step. Existing dedicated fixtures for cylindrical grinding machines require operators to fix the bar stock in place. To ensure concentricity during grinding, operators often need to adjust the fixture's position and tightness multiple times, making the operation complex and inconvenient. Secondly, because the fixture's fixing points are usually at both ends of the bar stock, when grinding long bars, if the bar stock is too long, gravity can cause the middle section to bend downwards, leading to wobbling during rotation and reducing machining accuracy. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a special fixture for cylindrical grinding machines, which solves the technical problem mentioned in the background art that, in order to ensure the concentricity of the workpiece during the grinding process, the operator often needs to adjust the position and tightness of the fixture multiple times, making the operation relatively complicated.

[0004] Technical solution

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special fixture for cylindrical grinding machines, including a support base, a first motor mounted on the support base, a fixed plate fixedly mounted on the drive end of the first motor passing through the support base, multiple moving slots on one side of the fixed plate, a moving seat movably mounted in the moving slots, a clamping block fixedly mounted on one end of the moving seat passing through the moving slots, a movable chamber within the fixed plate, a moving rod fixedly mounted on one end of the moving seat, two limiting rods fixedly mounted on one end of the moving rod extending into the movable chamber, a drive seat movably mounted within the movable chamber, multiple limiting frames cooperating with the limiting rods fixedly mounted on the outside of the drive seat, multiple springs fixedly mounted between the drive seat and the movable chamber, a positioning block fixedly mounted on one end of the drive seat, a moving plate slidably mounted on the support base via a track structure, a center pin rotatably mounted on one side of the moving plate, a lifting seat movably mounted on the upper end of the support base, and two support rollers mounted on the lifting seat.

[0006] The present invention is further configured such that a first electric push rod is provided on the support base, and the driving end of the first electric push rod passes through the support base and is fixedly connected to the moving plate, so as to facilitate the movement of the moving plate.

[0007] The present invention is further configured such that the support base is provided with an adjustment groove, a lead screw is rotatably provided in the adjustment groove, and a second motor is fixedly provided on one side of the support base through one end of the lead screw to facilitate the rotation of the lead screw.

[0008] The present invention is further configured such that the lead screw is threaded with an adjustment seat, and the adjustment seat is provided with a lifting groove to facilitate the movement of the adjustment seat.

[0009] The present invention is further configured such that a second electric push rod is fixedly provided in the lifting groove, and the driving end of the second electric push rod is fixedly connected to the lifting seat to facilitate the movement of the lifting seat.

[0010] The present invention is further configured such that the lifting seat is provided with a mounting groove, a screw is rotatably provided in the mounting groove, and a handle is fixedly provided at one end of the screw through the mounting groove to facilitate the rotation of the screw.

[0011] The present invention is further configured such that a mounting seat is threaded on the screw, and mounting plates are fixedly mounted on the mounting seat and the lifting seat respectively, and two bearings are provided on each mounting plate to facilitate bearing movement.

[0012] The present invention is further configured such that each bearing is provided with a movable insert rod, and each insert rod is fixedly connected to the support roller, so as to facilitate the fixing of the support roller. Beneficial effects

[0013] Compared with the prior art, this utility model provides a special fixture for cylindrical grinding machines, which has the following beneficial effects:

[0014] 1. Through the cooperation of the support base, first motor, fixed plate, moving slot, moving seat, clamping block, movable chamber, moving rod, limiting rod, drive base, limiting frame, spring, positioning block, moving plate, ejector pin and first electric push rod, the bar stock workpiece can be clamped and fixed while being positioned, so that the bar stock workpiece is placed in the center of the fixed plate and clamped and fixed by three clamping blocks, so that it is kept horizontal under the limiting and fixing of the positioning block and clamping block, ensuring the concentricity of the bar stock during the grinding process. The operation is simple and very convenient to use.

[0015] 2. By cooperating with the lifting seat, support roller, adjusting groove, lead screw, second motor, adjusting seat, lifting groove and second electric push rod, the middle position of the rotating bar workpiece can be supported, avoiding bending deformation and shaking during rotation, thus ensuring the machining accuracy of the outer diameter grinding of the bar workpiece.

[0016] 3. The support roller is designed to be detachable by using a combination of mounting groove, screw, throttle, mounting base, mounting plate, bearing and insert rod. When the support roller is damaged, it can be replaced individually. The entire replacement method is simple and maintenance is convenient and quick. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a special fixture for an external cylindrical grinding machine in use;

[0018] Figure 2 This is a cross-sectional schematic diagram of the fixed plate and its connecting components when the clamping plate is in a moving state.

[0019] Figure 3 This is a schematic cross-sectional view of the support base and its connecting components in the moving state of the adjustment base.

[0020] Figure 4 This is a schematic cross-sectional view of the adjusting seat and its connecting components in the moving state of the lifting seat.

[0021] Figure 5 This is a schematic cross-sectional view of the lifting seat and its connecting components in the installation state of the support roller.

[0022] In the diagram: 1. Support base; 2. First motor; 3. Fixed plate; 4. Moving groove; 5. Moving seat; 6. Clamping block; 7. Movable chamber; 8. Moving rod; 9. Limiting rod; 10. Drive seat; 11. Limiting frame; 12. Spring; 13. Positioning block; 14. Moving plate; 15. Ejector pin; 16. Lifting seat; 17. Support roller; 18. First electric push rod; 19. Adjusting groove; 20. Lead screw; 21. Second motor; 22. Adjusting seat; 23. Lifting groove; 24. Second electric push rod; 25. Mounting groove; 26. Screw; 27. Rotary handle; 28. Mounting seat; 29. ​​Mounting plate; 30. Bearing; 31. Insert rod. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Please see Figures 1-5 A special fixture for cylindrical grinding machines includes a support base 1, on which a first motor 2 is mounted. A fixed plate 3 is fixedly mounted on the drive end of the first motor 2, passing through the support base 1. Multiple movable slots 4 are provided on one side of the fixed plate 3. A movable seat 5 is movably mounted within each movable slot 4. A clamping block 6 is fixedly mounted on one end of the movable seat 5, passing through the movable slot 4. A movable chamber 7 is provided inside the fixed plate 3. A movable rod 8 is fixedly mounted on one end of the movable seat 5. One end of the movable rod 8 extends into the movable chamber 7 and is fixedly mounted with two limiting rods 9. A drive seat 10 is movably installed inside the moving chamber 7. Multiple limiting frames 11 that cooperate with the limiting rod 9 are fixedly installed on the outside of the drive seat 10. Multiple springs 12 are fixed between the drive seat 10 and the moving chamber 7. A positioning block 13 is fixedly installed at one end of the drive seat 10. A moving plate 14 is slidably installed on the support seat 1 via a track structure. A pin 15 is rotatably installed on one side of the moving plate 14. A first electric push rod 18 is installed on the support seat 1. The driving end of the first electric push rod 18 passes through the support seat 1 and is fixedly connected to the moving plate 14.

[0027] In this embodiment, when it is necessary to fix the bar stock, one end of the bar stock is brought into contact with the positioning block 13, so that the positioning block 13 positions the bar stock and makes it horizontal. Pushing the bar stock causes the workpiece to push the positioning block 13 to move, and the positioning block 13 pushes the drive seat 10 to move. The spring 12 is compressed. Since the drive seat 10 has multiple inclined surfaces on its outer side, the limiting frame 11 is fixed at the position of the inclined surface, so the limiting frame 11 is inclined. When the drive seat 10 moves, the drive seat 10 drives the limiting frame 11 to move. Due to the limiting rod The 9-axis movable element is set within the limiting frame 11. The limiting frame 11 drives the limiting rod 9 to move, the limiting rod 9 drives the moving rod 8 to move, the moving rod 8 drives the moving seat 5 to move, and the moving seat 5 drives the clamping block 6 to move. This allows multiple clamping blocks 6 to move simultaneously and clamp and fix the bar stock workpiece to the center position of the positioning block 13, thus horizontally fixing the bar stock workpiece to the center position of the fixing plate 3. The first electric push rod 18 is activated, which drives the ejector pin 15 to move, so that one end of the ejector pin 15 abuts against one end of the bar stock workpiece and fixes it. The first motor 2 is activated, which drives the fixing plate 3 to rotate. The fixing plate 3 rotates the fixed bar stock workpiece through the multiple clamping blocks 6.

[0028] Please see Figures 1-5As one embodiment for supporting bar stock workpieces: a lifting seat 16 is movably provided on the upper end of the support base 1, two support rollers 17 are installed on the lifting seat 16, an adjustment groove 19 is provided on the support base 1, a lead screw 20 is rotatably provided in the adjustment groove 19, one end of the lead screw 20 passes through the support base 1 and is fixedly provided with a second motor 21 fixedly installed on one side of the support base 1, an adjustment seat 22 is threaded on the lead screw 20, a lifting groove 23 is provided on the adjustment seat 22, a second electric push rod 24 is fixedly provided in the lifting groove 23, and the driving end of the second electric push rod 24 is fixedly connected to the lifting seat 16.

[0029] Specifically, the second motor 21 is started, which drives the lead screw 20 to rotate. Since the lead screw 20 is threadedly connected to the adjusting seat 22, the adjusting seat 22 moves along the adjusting groove 19. The adjusting seat 22 drives the lifting seat 16 to move, and the lifting seat 16 drives the installed support roller 17 to move, thereby adjusting the position of the support roller 17 so that the support roller 17 moves to the middle position of the bar stock. The second electric push rod 24 is started, which drives the lifting seat 16 to move upward along the lifting groove 23. The lifting seat 16 drives the installed support roller 17 to move, so that the support roller 17 contacts the bar stock and supports it.

[0030] Please see Figures 1-5 As one embodiment for replacing the support roller 17: the lifting seat 16 is provided with a mounting groove 25, a screw 26 is rotatably provided in the mounting groove 25, one end of the screw 26 passes through the mounting groove 25 and is fixedly provided with a handle 27, a mounting seat 28 is threaded on the screw 26, a mounting plate 29 is fixedly provided on the mounting seat 28 and the lifting seat 16 respectively, each mounting plate 29 is provided with two bearings 30, each bearing 30 is movably provided with an insert rod 31, and each insert rod 31 is fixedly connected to the support roller 17.

[0031] Specifically, when the support roller 17 needs to be replaced, turn the handle 27. The handle 27 drives the screw 26 to rotate. Since the screw 26 is threadedly connected to the mounting base 28, the mounting base 28 moves. The mounting base 28 drives one of the mounting plates 29 to move. The mounting plate 29 drives the bearing 30 to move. The insertion rod 31 is removed from the bearing 30, and the support roller 17 can be removed for replacement. The replaced support roller 17 can be installed by using the reverse operation.

[0032] In summary, when using the overall equipment:

[0033] When the bar stock needs to be fixed, the support base 1 is U-shaped and installed on the worktable of the cylindrical grinding machine. One end of the bar stock is placed in contact with the positioning block 13, so that the positioning block 13 positions the bar stock horizontally. Pushing the bar stock causes the workpiece to push the positioning block 13 to move, which in turn pushes the drive seat 10 to move. The spring 12 is compressed. Since the drive seat 10 has multiple inclined surfaces on its outer side, the limiting frame 11 is fixed at the position of the inclined surface, so the limiting frame 11 is inclined. When the drive seat 10 moves, the drive seat 10 drives the limiting frame 11 to move. As frame 11 moves, the limiting rod 9, which is movably positioned within the limiting frame 11, causes the limiting frame 11 to move. The limiting rod 9 then moves the moving rod 8, which in turn moves the moving seat 5. The moving seat 5 then moves the clamping block 6, causing multiple clamping blocks 6 to move simultaneously and clamp the bar stock workpiece to the center position of the positioning block 13. This horizontally fixes the bar stock workpiece to the center position of the fixing plate 3. The first electric push rod 18 is then activated, causing the ejector pin 15 to move, so that one end of the ejector pin 15 abuts against one end of the bar stock workpiece and fixes it in place. The first motor 2 is then activated, causing the fixing plate 3 to rotate. The fixing plate 3, through the multiple clamping blocks 6, rotates the fixed bar stock workpiece.

[0034] When it is necessary to support the middle position of the bar stock, the second motor 21 is started. The second motor 21 drives the lead screw 20 to rotate. Since the lead screw 20 is threadedly connected to the adjusting seat 22, the adjusting seat 22 moves along the adjusting groove 19. The adjusting seat 22 drives the lifting seat 16 to move. The lifting seat 16 drives the installed support roller 17 to move, thereby adjusting the position of the support roller 17 so that the support roller 17 moves to the middle position of the bar stock. The second electric push rod 24 is started. The second electric push rod 24 drives the lifting seat 16 to move upward along the lifting groove 23. The lifting seat 16 drives the installed support roller 17 to move, so that the support roller 17 contacts the bar stock and supports it.

[0035] When the support roller 17 needs to be replaced, turn the handle 27. The handle 27 drives the screw 26 to rotate. Since the screw 26 is threadedly connected to the mounting base 28, the mounting base 28 moves. The mounting base 28 drives one of the mounting plates 29 to move. The mounting plate 29 drives the bearing 30 to move. Remove the insertion rod 31 from the bearing 30. The support roller 17 can then be removed and replaced. The replacement support roller 17 can be installed by performing the reverse operation.

[0036] All electrical equipment in the entire device is controlled by a controller installed on the external cylindrical grinding machine. Since the controller is matched with commonly used equipment, its control principle and circuit connection are existing, well-known and mature technologies. Therefore, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A special fixture for cylindrical grinding machines, including a support base (1), characterized in that: The support base (1) is provided with a first motor (2). The drive end of the first motor (2) passes through the support base (1) and is fixedly provided with a fixed plate (3). The fixed plate (3) is provided with multiple moving slots (4) on one side. A moving seat (5) is movably provided in the moving slot (4). A clamping block (6) is fixedly provided at one end of the moving seat (5) through the moving slot (4). An active chamber (7) is provided in the fixed plate (3). A moving rod (8) is fixedly provided at one end of the moving seat (5). One end of the moving rod (8) extends into the active chamber (7) and is fixedly provided with two limiting rods (9). (7) An internally movable drive seat (10) is provided. Multiple limiting frames (11) that cooperate with the limiting rod (9) are fixedly provided on the outside of the drive seat (10). Multiple springs (12) are fixed between the drive seat (10) and the movable chamber (7). A positioning block (13) is fixedly provided at one end of the drive seat (10). A movable plate (14) is slidably provided on the support seat (1) through a track structure. A pin (15) is rotatably provided on one side of the movable plate (14). A lifting seat (16) is movably provided at the upper end of the support seat (1). Two support rollers (17) are installed on the lifting seat (16).

2. The special fixture for cylindrical grinding machines according to claim 1, characterized in that: The support base (1) is provided with a first electric push rod (18), and the driving end of the first electric push rod (18) passes through the support base (1) and is fixedly connected to the moving plate (14).

3. The special fixture for cylindrical grinding machines according to claim 1, characterized in that: The support base (1) is provided with an adjustment groove (19), and a lead screw (20) is rotatably provided in the adjustment groove (19). One end of the lead screw (20) passes through the support base (1) and is fixedly provided with a second motor (21) fixedly installed on one side of the support base (1).

4. The special fixture for cylindrical grinding machines according to claim 3, characterized in that: The lead screw (20) is threaded with an adjustment seat (22), and the adjustment seat (22) is provided with a lifting groove (23).

5. The special fixture for cylindrical grinding machines according to claim 4, characterized in that: A second electric push rod (24) is fixedly installed inside the lifting groove (23), and the driving end of the second electric push rod (24) is fixedly connected to the lifting seat (16).

6. The special fixture for cylindrical grinding machines according to any one of claims 1 or 2, characterized in that: The lifting seat (16) is provided with a mounting groove (25), and a screw (26) is rotatably provided in the mounting groove (25). One end of the screw (26) passes through the mounting groove (25) and is fixedly provided with a throttle (27).

7. The special fixture for cylindrical grinding machines according to claim 6, characterized in that: The screw (26) is threaded with a mounting seat (28), and mounting plates (29) are fixedly mounted on the mounting seat (28) and the lifting seat (16), and each mounting plate (29) is provided with two bearings (30).

8. The special fixture for cylindrical grinding machines according to claim 7, characterized in that: Each of the bearings (30) is provided with a movable insert rod (31), and each insert rod (31) is fixedly connected to the support roller (17).

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