A center hole and eccentric hole dual-purpose drilling rotary positioning tool

Abstract

The utility model discloses a center hole and eccentric hole dual -purpose drilling rotation positioning frock, including fixed platform and four jaw chuck, the top fixedly connected with drilling mechanism of fixed platform one end fixedly connected with vertical seat away from drilling mechanism of fixed platform, the side of vertical seat is provided with convex slot, the inside slide of convex slot is provided with convex seat, is connected with screw rod on the convex seat, the top fixedly connected with top plate of vertical seat, the first motor is fixedly installed on the top plate, the output of first motor and the top fixedly connected with screw rod, the side fixedly connected with round seat of convex seat, four jaw chuck is rotatably connected with round seat, the side of convex seat is provided with recess, is convenient for the angle and height of four jaw chuck and work piece adjust, is convenient for on work piece and drills center hole and eccentric hole, it avoids the frequent replacement frock, has improved the processing efficiency, avoids the frequent replacement frock in batch production and increases the working hour cost greatly.

Description

Technical Field

[0001] This utility model relates to the field of machining tooling technology, and more specifically, it relates to a drilling rotary positioning tooling that can be used for both center holes and eccentric holes. Background Technology

[0002] In machining processes, drilling is a common basic machining step, with the machining of center holes (holes centered on the workpiece axis) and eccentric holes (holes deviating from the workpiece axis) being particularly common. Currently, the industry typically employs two independent positioning fixtures for machining center holes and eccentric holes: a centering positioning fixture is used for machining center holes, achieving precise positioning through a positioning structure coaxial with the workpiece axis; while an eccentric positioning fixture is required for machining eccentric holes, determining the hole position through a positioning component with a preset eccentric distance.

[0003] This traditional processing method has obvious drawbacks: the tooling change process is cumbersome, resulting in low processing efficiency. Especially in mass production, frequent tooling changes will significantly increase labor costs. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a drilling rotary positioning tool that can be used for both center holes and eccentric holes, so as to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a dual-purpose drilling rotary positioning fixture for center holes and eccentric holes, comprising a fixed table and a four-jaw chuck. A drilling mechanism is fixedly connected to the top of the fixed table, and a vertical seat is fixedly connected to the end of the fixed table away from the drilling mechanism. A convex groove is provided on the side of the vertical seat, and a convex seat is slidably disposed inside the convex groove. A screw is threadedly connected to the convex seat. A top plate is fixedly connected to the top of the vertical seat, and a first motor is fixedly installed on the top plate. The output end of the first motor is fixedly connected to the top of the screw. A round seat is fixedly connected to the side of the convex seat, and the four-jaw chuck is rotatably connected to the round seat. A groove is provided on the side of the convex seat, and a second motor is fixedly installed inside the groove. The output end of the second motor is fixedly connected to the side of the four-jaw chuck. This facilitates the adjustment of the angle and height of the four-jaw chuck and the workpiece, making it convenient to drill center holes and eccentric holes on the workpiece. It avoids frequent tooling changes, improves processing efficiency, and avoids significantly increasing labor costs in mass production by avoiding frequent tooling changes.

[0006] The present invention is further configured such that a first pointer is fixedly connected to the side end of the four-jaw chuck, and an angle scale line is provided on the side end of the circular base, so as to facilitate the observation of the rotation angle of the four-jaw chuck.

[0007] The present invention is further configured such that a measuring plate is fixedly connected to the side end of the vertical seat, and a displacement scale line is provided on the measuring plate; a second pointer is fixedly connected to the circular seat, so as to facilitate the observation and judgment of the distance of the four-jaw chuck moving up and down.

[0008] The present invention is further configured such that the drilling mechanism includes a third motor, a fixed base is fixedly connected to the top of the fixed platform, a first electric cylinder is fixedly installed on the fixed base, a fixed plate is fixedly connected to the telescopic end of the first electric cylinder, a fixed frame is fixedly connected to the side end of the fixed plate, the third motor is fixedly installed on the fixed frame, and a drill bit is fixedly installed at the output end of the third motor to facilitate drilling of the workpiece.

[0009] The present invention is further configured such that a plurality of support rods are fixedly connected to the side end of the fixing plate, and the plurality of support rods are slidably engaged with the fixing seat to improve the stability of the fixing plate.

[0010] The present invention is further configured such that a sliding groove is provided on the side end of the circular seat, and a brake pad that cooperates with the four-jaw chuck is slidably disposed inside the sliding groove. A second electric cylinder is fixedly connected to the side end of the circular seat, and the telescopic end of the second electric cylinder is fixedly connected to the side end of the brake pad, so as to facilitate the fixation of the four-jaw chuck.

[0011] The present invention is further configured such that a material discharge port is provided on the fixed platform, and a baffle plate is fixedly connected to the top of the fixed platform outside the material discharge port, so that the waste material generated by drilling falls through the material discharge port.

[0012] The present invention is further provided that a collection box is placed below the material discharge port to facilitate the collection of waste generated during drilling.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a drilling rotary positioning fixture that can be used for both center holes and eccentric holes, which has the following beneficial effects: 1. The first motor drives the screw to rotate, which causes the convex seat to slide inside the convex groove, facilitating the adjustment of the height of the four-jaw chuck and the workpiece. The second motor drives the adjustment of the height of the four-jaw chuck, facilitating the corresponding adjustment of the position of the drill hole relative to the workpiece. This makes it easier to drill center holes and eccentric holes on the workpiece, avoiding frequent tooling changes, improving processing efficiency, and significantly reducing labor costs in mass production by avoiding frequent tooling changes.

[0014] 2. By fixing a first pointer to the four-jaw chuck and setting an angle scale line on the round base, it is easy to accurately adjust the rotation angle of the four-jaw chuck and the workpiece. By fixing a second pointer to the round base and setting a displacement scale line on the measuring plate, it is easy to accurately adjust the vertical movement distance of the four-jaw chuck and the workpiece. This makes it easy to accurately adjust the position of the tooling to be drilled to the position corresponding to the drilling mechanism, and facilitate accurate drilling on the workpiece.

[0015] 3. After the four-jaw chuck position is adjusted, the brake pad is moved by the second electric cylinder so that the side end of the brake pad is pressed against the side end of the four-jaw chuck, which facilitates the fixation of the four-jaw chuck and prevents the four-jaw chuck from rotating during drilling, thus ensuring the drilling effect on the workpiece. Attached Figure Description

[0016] Figure 1 This is a front view of a drilling rotary positioning fixture that can be used for both center holes and eccentric holes according to this utility model. Figure 2 This is a schematic diagram showing the connection between the vertical base, circular base, four-jaw chuck, first pointer, angle scale line, second pointer, measuring plate, and displacement scale line in this utility model. Figure 3 This is a structural diagram showing the connection between the convex seat, the second motor, and the four-jaw chuck in this utility model. Figure 4 This is a structural diagram showing the fit between the circular seat and brake pads in this utility model; Figure 5 This is a schematic diagram of the vertical support structure in this utility model.

[0017] In the diagram: 1. Fixed platform; 2. Four-jaw chuck; 3. Vertical seat; 4. Convex groove; 5. Convex seat; 6. Screw; 7. Top plate; 8. First motor; 9. Round seat; 10. Groove; 11. Second motor; 12. First pointer; 13. Angle scale line; 14. Measuring plate; 15. Displacement scale line; 16. Third motor; 17. Fixed seat; 18. First electric cylinder; 19. Fixed plate; 20. Fixed frame; 21. Drill bit; 22. Support rod; 23. Slide groove; 24. Brake pad; 25. Second electric cylinder; 26. Material drop port; 27. Baffle plate; 28. Collection box; 29. ​​Second pointer. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] Please see Figures 1-5 A dual-purpose drilling rotary positioning fixture for both center holes and eccentric holes includes a fixed table 1 and a four-jaw chuck 2. A drilling mechanism is fixedly connected to the top of the fixed table 1. A vertical seat 3 is fixedly connected to the end of the top of the fixed table 1 away from the drilling mechanism. A convex groove 4 is provided on the side of the vertical seat 3. A convex seat 5 is slidably disposed inside the convex groove 4. A screw 6 is threadedly connected to the convex seat 5. A top plate 7 is fixedly connected to the top of the vertical seat 3. A first motor 8 is fixedly mounted on the top plate 7. The output end of the first motor 8 is fixedly connected to the top of the screw 6. A round seat 9 is fixedly connected to the side end of the convex seat 5. The four-jaw chuck 2 is rotatably connected to the round seat 9. A groove 10 is provided on the side end of the convex seat 5. A second motor 11 is fixedly installed inside the groove 10. The output end of the second motor 11 is fixedly connected to the side end of the four-jaw chuck 2. A material discharge port 26 is provided on the fixed platform 1. A baffle plate 27 is fixedly connected to the top of the fixed platform 1 outside the material discharge port 26. The waste generated during drilling falls through the material discharge port 26. A collection box 28 is placed below the material discharge port 26 to facilitate the collection of waste generated during drilling.

[0022] Specifically, the first motor 8 drives the screw 6 to rotate, and the rotation of the screw 6 causes the convex seat 5 to slide inside the convex groove 4, which facilitates the adjustment of the height of the four-jaw chuck 2 and the workpiece. The second motor 11 drives the height of the four-jaw chuck 2 to adjust the position of the drill hole relative to the workpiece, which facilitates the drilling of center holes and eccentric holes on the workpiece. This avoids frequent tooling changes, improves processing efficiency, and avoids significantly increasing labor costs in mass production by avoiding frequent tooling changes.

[0023] Please see Figure 2 The four-jaw chuck 2 is fixedly connected to a first pointer 12 on its side end. The round seat 9 is provided with an angle scale line 13 on its side end, which makes it easy to observe the rotation angle of the four-jaw chuck 2. The vertical seat 3 is fixedly connected to a measuring plate 14, which is provided with a displacement scale line 15. The round seat 9 is fixedly connected to a second pointer 29, which makes it easy to observe and judge the distance that the four-jaw chuck 2 moves up and down.

[0024] Specifically, by fixing a first pointer 12 to the four-jaw chuck 2 and setting an angle scale line 13 on the round base 9, it is convenient to accurately adjust the rotation angle of the four-jaw chuck 2 and the workpiece. By fixing a second pointer 29 to the round base 9 and setting a displacement scale line 15 on the measuring plate 14, it is convenient to accurately adjust the vertical movement distance of the four-jaw chuck 2 and the workpiece. This makes it convenient to accurately adjust the position of the tooling to be drilled to the position corresponding to the drilling mechanism, and to accurately drill holes on the workpiece.

[0025] Please see Figure 1 The drilling mechanism includes a third motor 16. A fixed base 17 is fixedly connected to the top of the fixed platform 1. A first electric cylinder 18 is fixedly installed on the fixed base 17. A fixed plate 19 is fixedly connected to the telescopic end of the first electric cylinder 18. A fixed frame 20 is fixedly connected to the side end of the fixed plate 19. The third motor 16 is fixedly installed on the fixed frame 20. A drill bit 21 is fixedly installed at the output end of the third motor 16 to facilitate drilling the workpiece. Multiple support rods 22 are fixedly connected to the side end of the fixed plate 19. The multiple support rods 22 are all slidably engaged with the fixed base 17 to improve the stability of the fixed plate 19.

[0026] Specifically, the drill bit 21 is rotated by the third motor 16, and at the same time, the fixed plate 19, the fixed frame 20, the third motor 16 and the drill bit 21 are moved by the second electric cylinder 25, so that the drill bit 21 drills holes in the workpiece.

[0027] Please see Figure 3 and Figure 4 The side end of the round seat 9 is provided with a sliding groove 23. A brake pad 24 that cooperates with the four-jaw chuck 2 is slidably arranged inside the sliding groove 23. A second electric cylinder 25 is fixedly connected to the side end of the round seat 9. The telescopic end of the second electric cylinder 25 is fixedly connected to the side end of the brake pad 24, which facilitates the fixation of the four-jaw chuck 2.

[0028] Specifically, after the position of the four-jaw chuck 2 is adjusted, the brake pad 24 is moved by the second electric cylinder 25 so that the side end of the brake pad 24 abuts against the side end of the four-jaw chuck 2, which facilitates the fixation of the four-jaw chuck 2 and prevents the four-jaw chuck 2 from rotating during drilling, thus ensuring the drilling effect on the workpiece.

[0029] In summary, when using the overall equipment: First, the first motor 8 is started, driving the screw 6 to rotate, moving the convex seat 5 to its lowest position. Then, the workpiece is clamped and fixed on the four-jaw chuck 2. At this time, the center position of the workpiece corresponds to the position of the drill bit 21. If drilling is required at the center position of the workpiece, the third motor 16 drives the drill bit 21 to rotate, and at the same time, the second electric cylinder 25 pushes the fixing plate 19, the fixing frame 20, the third motor 16, and the drill bit 21 to move, so that the drill bit 21 drills at the center position of the workpiece. When drilling is required at an off-center position on the workpiece, the second motor 11 drives the four-jaw chuck 2 and the workpiece to rotate, rotating the position on the workpiece to be drilled to the lower position. Then, the second electric cylinder 25 pushes the brake pad 24 to move, so that the side end of the brake pad 24 abuts against the side end of the four-jaw chuck 2. Then, the first motor 8 drives the screw 6 to rotate, so that the convex seat 5, the round seat 9 and the four-jaw chuck 2 move up and down. According to the distance between the eccentric shaft of the required drilling and the center position of the workpiece, by observing the change of the scale value of the displacement scale line 15 pointed to by the second pointer 29, the workpiece is moved up by the corresponding distance. At this time, the position of the workpiece eccentricity that needs to be drilled corresponds to the position of the drill bit 21. Then, the eccentric hole is drilled at the eccentric position on the workpiece. The waste generated during drilling falls into the inside of the collection box 28 through the discharge port 26, and the waste is collected by the collection box 28.

[0030] 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 rotary positioning fixture for drilling holes that can be used for both center holes and eccentric holes, comprising a fixed table (1) and a four-jaw chuck (2), characterized in that: The top of the fixed platform (1) is fixedly connected to a drilling mechanism. The top of the fixed platform (1) away from the drilling mechanism is fixedly connected to a vertical seat (3). The side end of the vertical seat (3) is provided with a convex groove (4). A convex seat (5) is slidably provided inside the convex groove (4). A screw (6) is threadedly connected to the convex seat (5). The top of the vertical seat (3) is fixedly connected to a top plate (7). A first motor (8) is fixedly installed on the top plate (7). The output end of the first motor (8) is fixedly connected to the top of the screw (6). A round seat (9) is fixedly connected to the side end of the convex seat (5). The four-jaw chuck (2) is rotatably connected to the round seat (9). A groove (10) is provided on the side end of the convex seat (5). A second motor (11) is fixedly installed inside the groove (10). The output end of the second motor (11) is fixedly connected to the side end of the four-jaw chuck (2).

2. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 1, characterized in that: The four-jaw chuck (2) is fixedly connected to a first pointer (12), and the round base (9) is provided with an angle scale line (13) on its side.

3. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 2, characterized in that: A measuring plate (14) is fixedly connected to the side end of the vertical seat (3), and a displacement scale line (15) is provided on the measuring plate (14). A second pointer (29) is fixedly connected to the circular seat (9).

4. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 1, characterized in that: The drilling mechanism includes a third motor (16), a fixed base (17) is fixedly connected to the top of the fixed platform (1), a first electric cylinder (18) is fixedly installed on the fixed base (17), a fixed plate (19) is fixedly connected to the telescopic end of the first electric cylinder (18), a fixed frame (20) is fixedly connected to the side end of the fixed plate (19), the third motor (16) is fixedly installed on the fixed frame (20), and a drill bit (21) is fixedly installed at the output end of the third motor (16).

5. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 4, characterized in that: The side end of the fixed plate (19) is fixedly connected to multiple support rods (22), and the multiple support rods (22) are all slidably engaged with the fixed seat (17).

6. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 1, characterized in that: The side end of the round seat (9) is provided with a sliding groove (23), and a brake pad (24) that cooperates with the four-jaw chuck (2) is slidably arranged inside the sliding groove (23). A second electric cylinder (25) is fixedly connected to the side end of the round seat (9), and the telescopic end of the second electric cylinder (25) is fixedly connected to the side end of the brake pad (24).

7. The drilling rotary positioning fixture for both center holes and eccentric holes according to claim 1, characterized in that: The fixed platform (1) is provided with a material discharge port (26), and the top of the fixed platform (1) is fixedly connected to a baffle plate (27) outside the material discharge port (26).

8. A drilling rotary positioning fixture for both center holes and eccentric holes according to claim 7, characterized in that: A collection box (28) is placed below the discharge port (26).

Images