Rapid workpiece positioning and clamping mechanism applied to machine tool spindle

Abstract

The utility model discloses a quick workpiece positioning and clamping mechanism applied to a machine tool spindle, which comprises a fixed plate, a movable plate, a first three-jaw chuck and a second three-jaw chuck, one side of the fixed plate is provided with a first groove, and the fixed plate is provided with second grooves on two sides of the first groove. Two first motors are fixedly connected to the side, located in the second groove, of the fixing plate, the output ends of the two first motors are fixedly connected with screws, sliding blocks are in threaded connection with the screws, supporting rods are fixedly connected to one sides of the sliding blocks, supporting frames are fixedly connected to the supporting rods, and second motors are fixedly connected to one sides of the supporting frames; the supporting frame is arranged in the fixing plate, the auxiliary plate is driven to move up and down through the driving gear column and the auxiliary gear column, and therefore the auxiliary supporting structure is arranged between the second three-jaw chuck and the first three-jaw chuck, the clamping position can be replaced, and the effect of facilitating machining is achieved; and meanwhile, the problem that the clamp is easily damaged due to transverse arrangement of the to-be-machined object during adjustment is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of machine tool spindle technology, specifically to a workpiece quick positioning and clamping mechanism applied to machine tool spindles. Background Technology

[0002] A machine tool spindle is the shaft on a machine tool that drives the workpiece or cutting tool to rotate. It is usually composed of a spindle, bearings, and transmission components. There are many types of workpieces used on machine tool spindles, mainly divided into metal workpieces (shaft workpieces, disc workpieces, and sleeve workpieces, etc.) and non-metal workpieces (plastic workpieces, rubber workpieces, and composite material workpieces, etc.). Then, a rapid positioning and clamping mechanism is used to improve the machine tool's clamping and positioning efficiency for the workpiece, ensuring machining accuracy and stability.

[0003] According to Chinese Patent Publication No. CN118268910B, entitled "A Workpiece Quick Positioning and Clamping Mechanism Applied to Machine Tool Spindles," the main description is that by employing a mechanical workpiece quick positioning and clamping mechanism, the workpiece clamping process is smooth, reliable, and highly efficient. Compared with existing technologies, during the rotation of the hollow spindle, the operator can feed the workpiece into the annular sleeve and trigger the self-locking structure to achieve automatic positioning and locking of the workpiece. This purely mechanical locking eliminates the need for hydraulic drive or pneumatic pressure locking, thus saving the delay time before clamping. It solves the problem of low loading efficiency in existing machine tool loading and clamping mechanisms, significantly improves the clamping and positioning efficiency of workpieces, and has less reliance on hydraulic and pneumatic components, making it of great significance to my country's processing and manufacturing industry.

[0004] Workpieces typically used in spindles are clamped using second- or third-jaw chucks and electric chucks before machining. However, the second- or third-jaw chuck occupies a portion of the workpiece during clamping, requiring the clamping position to be changed during machining. Additionally, when clamping a cylindrical workpiece, the workpiece is placed horizontally, and the weight of the cylindrical workpiece can damage the fixture.

[0005] Therefore, a workpiece quick positioning and clamping mechanism for use on machine tool spindles is proposed to solve the problem that the second and third jaw chucks occupy a certain position on the workpiece when clamping it, which leads to the need to change positions during the machining process. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the second and third jaw chucks occupy a certain position on the workpiece when clamping it, which leads to the need to change the position during the processing. Therefore, a workpiece quick positioning and clamping mechanism for use on machine tool spindles is proposed.

[0007] The technical solution adopted by this utility model to solve the technical problem is: a workpiece quick positioning and clamping mechanism applied on a machine tool spindle, including a fixed plate, a movable plate, a first three-jaw chuck and a second three-jaw chuck. A first groove is formed on one side of the fixed plate, and second grooves are formed on both sides of the first groove. Two first motors are fixedly connected to one side of the fixed plate in the second groove. Screws are fixedly connected to the output ends of the two first motors. A slider is threaded onto the screw. A support rod is fixedly connected to one side of the slider. A support frame is fixedly connected to the support rod. A second motor is fixedly connected to one side of the support frame. A drive gear column is fixedly connected to the output end of the second motor. An auxiliary gear column is rotatably connected to the upper side of the support frame. A rack meshes on the auxiliary gear column. An auxiliary plate is fixedly connected to one side of the rack. A V-groove is formed at the upper end of the auxiliary plate.

[0008] As a preferred technical solution of this utility model, a connecting frame is fixedly connected to one side of the auxiliary plate, a baffle is inserted into the connecting frame, and an adjusting rod is threadedly connected to one side of the connecting frame, with the end of the adjusting rod contacting the baffle. By setting the baffle and cooperating with the V-groove on the auxiliary plate, the workpiece to be processed can be limited.

[0009] As a preferred technical solution of this utility model, the auxiliary plate is provided with a third groove on both sides of the V-groove, and a contact roller is rotatably connected in the third groove. By setting the contact roller, the friction between the auxiliary plate and the workpiece to be processed is reduced when the auxiliary plate moves.

[0010] As a preferred technical solution of this utility model, both sides of the auxiliary plate are in contact with sliding balls, which are rotatably embedded in the support frame. By setting the sliding balls, the friction when the auxiliary plate moves up and down is reduced.

[0011] As a preferred technical solution of this utility model, a baffle is fixedly connected to the auxiliary plate, and the bottom side of the baffle contacts the support frame. By setting the baffle, the indentation of the support frame and the auxiliary plate caused by the contact of the workpiece debris can be reduced.

[0012] This utility model has the following advantages: by setting a support frame inside the fixed plate, and by driving the auxiliary plate up and down through the drive gear column and the auxiliary gear column, an auxiliary support structure is set between the second three-jaw chuck and the first three-jaw chuck, which can replace the clamping position, thereby achieving the effect of convenient processing. At the same time, it also reduces the problem that the workpiece is easily damaged when it is placed horizontally during adjustment. Attached Figure Description

[0013] Figure 1 This is a side sectional view of a preferred embodiment of the present invention, showing a workpiece rapid positioning and clamping mechanism applied to a machine tool spindle.

[0014] Figure 2 This is a three-dimensional structural diagram of the support frame of a workpiece rapid positioning and clamping mechanism applied on a machine tool spindle according to a preferred embodiment of the present invention.

[0015] Figure 3 This is a top sectional view of the support frame of a workpiece rapid positioning and clamping mechanism applied to a machine tool spindle, according to a preferred embodiment of the present invention.

[0016] Figure 4 This is a top view of the cover structure of a workpiece rapid positioning and clamping mechanism applied on a machine tool spindle according to a preferred embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Fixed plate; 2. Moving plate; 3. First three-jaw chuck; 4. Second three-jaw chuck; 5. First groove; 6. Second groove; 7. Screw; 8. Slider; 9. Support rod; 10. Support frame; 11. Drive gear column; 12. Auxiliary gear column; 13. Rack; 14. Auxiliary plate; 15. V-groove; 16. Connecting frame; 17. Baffle; 18. Contact roller; 19. Sliding ball; 20. Baffle cover. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to the following: Figure 1-4 The workpiece quick positioning and clamping mechanism shown includes a fixed plate 1, a movable plate 2, a first three-jaw chuck 3, and a second three-jaw chuck 4. The movable plate 2 is limited by a bidirectional lead screw and a motor (not shown in the figure). A forward and reverse motor is provided on one side of the second three-jaw chuck 4, which can drive the second three-jaw chuck 4 to rotate and move relative to each other, thereby causing the first three-jaw chuck 3 and the second three-jaw chuck 4 to move relative to each other and clamp the rod-shaped workpiece to be processed. A first groove 5 is provided on one side of the fixed plate 1, and second grooves 6 are provided on both sides of the first groove 5. Two first motors are fixedly connected to the fixed plate 1 on one side of the second groove 6. The first motors drive the screw 7 to rotate, which enables the slider 8 to move. The support frame 10 moves, and the output ends of the two first motors are fixedly connected to screws 7. Slider 8 is threadedly connected to screws 7. Support rod 9 is fixedly connected to one side of slider 8. Support frame 10 is fixedly connected to support rod 9. Second motor is fixedly connected to one side of support frame 10. Second motor drives drive gear column 11 to rotate. When rack 13 meshes with drive gear column 11, auxiliary plate 14 can move up and down. Drive gear column 11 is fixedly connected to the output end of second motor. Auxiliary gear column 12 is rotatably connected to the upper side of support frame 10. Rack 13 meshes on auxiliary gear column 12. Auxiliary plate 14 is fixedly connected to one side of rack 13. V-groove 15 is opened at the upper end of auxiliary plate 14. V-groove 15 is used to connect the rod-shaped object to be processed.

[0020] A connecting frame 16 is fixedly connected to one side of the auxiliary plate 14. A baffle 17 is inserted into the connecting frame 16. An adjusting rod is threadedly connected to one side of the connecting frame 16, and the end of the adjusting rod contacts the baffle 17. By moving the baffle 17 upward and then pressing the baffle 17 with the end of the adjusting rod, a blocking structure can be formed, thereby driving the rod to be processed to move towards the side of the second three-jaw chuck 4.

[0021] The auxiliary plate 14 has a third groove on both sides inside the V-groove 15. A contact roller 18 is rotatably connected inside the third groove. By setting the contact roller 18 to contact the rod to be processed, the auxiliary plate 14 can move on the bottom side of the rod to be processed.

[0022] The auxiliary plate 14 has a slider 19 on both sides. The slider 19 rotates and is embedded in the support frame 10. By setting the slider 19, the friction between the auxiliary plate 14 and the support frame 10 can be reduced.

[0023] A baffle 20 is fixedly connected to the auxiliary plate 14. The bottom side of the baffle 20 contacts the support frame 10. By setting the baffle 20, the chips to be processed on the machine tool can be prevented from contacting the gap between the support frame 10 and the auxiliary plate 14.

[0024] Working principle: The rod-shaped object to be processed is connected to the second three-jaw chuck 4 by hand, and then the other side of the rod-shaped object is connected to the V-groove 15 of the auxiliary plate 14. At this time, the second motor drives the drive gear column 11 and the auxiliary gear column 12 to rotate, thereby adjusting the height of the auxiliary plate 14. Then the rod-shaped object to be processed is gradually placed horizontally. At this time, the moving plate 2 moves relative to the rod-shaped object and provides clamping by the relative movement of the first three-jaw chuck 3 and the second three-jaw chuck 4. When the contact point between the fixture and the rod-shaped object needs to be processed, one of the first three-jaw chuck 3 and the second three-jaw chuck 4 can be released. At this time, the auxiliary plate 14 provides support on the bottom side of the rod-shaped object and can provide auxiliary support when one of the three-jaw chucks is released. At this time, the other three-jaw chuck is driven by the forward and reverse motors, which can drive the rod-shaped object to be processed to rotate, thereby facilitating processing and reducing the problem of fixture damage caused by the horizontal placement of the workpiece during adjustment.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0026] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A workpiece rapid positioning and clamping mechanism applied on a machine tool spindle, comprising a fixed plate (1), a movable plate (2), a first three-jaw chuck (3), and a second three-jaw chuck (4), characterized in that, The fixing plate (1) has a first groove (5) on one side, and the fixing plate (1) has a second groove (6) on both sides of the first groove (5). The fixing plate (1) is fixedly connected to two first motors on one side of the second groove (6). The output ends of the two first motors are fixedly connected to screws (7). The screws (7) are threadedly connected to sliders (8). The sliders (8) are fixedly connected to one side of support rods (9). The support rods (9) are fixedly connected to support frames (10). The support frames (10) are fixedly connected to one side of second motors. The output ends of the second motors are fixedly connected to drive gear columns (11). The upper side of the support frames (10) is rotatably connected to auxiliary gear columns (12). The auxiliary gear columns (12) are meshed with racks (13). The racks (13) are fixedly connected to one side of auxiliary plates (14). The upper end of the auxiliary plates (14) has a V-groove (15).

2. The workpiece rapid positioning and clamping mechanism applied to a machine tool spindle as described in claim 1, characterized in that, A connecting frame (16) is fixedly connected to one side of the auxiliary plate (14), and a baffle (17) is inserted into the connecting frame (16). An adjusting rod is threadedly connected to one side of the connecting frame (16), and the end of the adjusting rod contacts the baffle (17).

3. The workpiece rapid positioning and clamping mechanism applied to a machine tool spindle as described in claim 2, characterized in that, The auxiliary plate (14) has a third groove on both sides inside the V-groove (15), and a contact roller (18) is rotatably connected inside the third groove.

4. The workpiece rapid positioning and clamping mechanism applied to a machine tool spindle as described in claim 3, characterized in that, Both sides of the auxiliary plate (14) are in contact with sliders (19), and the sliders (19) are rotatably embedded in the support frame (10).

5. A workpiece rapid positioning and clamping mechanism applied to a machine tool spindle as described in claim 4, characterized in that, A baffle (20) is fixedly connected to the auxiliary plate (14), and the bottom side of the baffle (20) is in contact with the support frame (10).

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