A sleeve expander clamp for milling a wing nut

Abstract

The utility model relates to a kind of for wing nut milling hole expansion sleeve fixture, belong to wing nut clamping equipment technical field. Including bottom plate, main body, limit ring and expansion sleeve body, main body is fixedly installed on bottom plate, and the end face around main body is respectively provided with boss, limit ring is set on boss, and expansion sleeve body is fixedly installed on the boss in limit ring, sleeve is fixedly installed on the boss in expansion sleeve body, sleeve is screw-mounted with adjusting bolt, expansion piece is sleeved on adjusting bolt, sleeve and adjusting bolt between expansion piece and boss are sleeved with top spring, and driving disc is arranged on the top of main body. The expansion sleeve fixture for wing nut milling hole is convenient to disassemble and assemble, effectively reduces artificial labor, at the same time, solve the problem that existing fixture can only fix single wing nut, leading to frequent material change rhythm, affect the working efficiency of subsequent milling hole.

Description

Technical Field

[0001] This utility model relates to an expansion sleeve clamp for milling holes in wing nuts, belonging to the technical field of wing nut clamping equipment. Background Technology

[0002] In fracturing surface tools and equipment, wing nuts are crucial components for manifold connections. A wing nut is annular in shape with three evenly distributed winglets on its outer circumference. These winglets facilitate the rotation of the wing nut. During use, wing nuts may loosen due to vibration or other reasons. To monitor for loosening, a chip is installed on the wing nut. Before installing the chip, a hole for the chip must be milled into the end face of the wing nut. This allows for timely detection of any loosening and enables measures to be taken to prevent accidents.

[0003] Before milling, wing nuts need to be clamped and fixed to ensure stable milling operations. Currently, wing nuts are typically fixed using a clamping fixture, which consists of a frame, a screw, and a clamping nut. The screw is fixed to the top of the frame, and the clamping nut is threaded onto the screw. The clamping process involves first threading the wing nut onto the screw, making it contact the frame, and then threading the clamping nut onto the screw. The clamping nut and a fixing plate work together to secure the wing nut. After the wing nut is fixed, milling is performed manually using a milling tool. After milling, the clamping nut and wing nut are manually removed and replaced with the next wing nut to be milled. This manual removal and installation of wing nuts is cumbersome, time-consuming, and labor-intensive, resulting in a high workload. Furthermore, the existing fixture can only fix a single wing nut, leading to frequent material changeovers and affecting the efficiency of subsequent milling operations. Therefore, an improvement is necessary. Summary of the Invention

[0004] The purpose of this utility model is to provide an expansion sleeve fixture for milling holes in wing nuts that is easy to assemble and disassemble, reduces manual labor, and solves the problem that existing fixtures can only fix a single wing nut, resulting in frequent material change cycles and affecting the efficiency of subsequent milling work.

[0005] The technical solution of this utility model is as follows:

[0006] An expansion sleeve clamp for milling holes in wing nuts includes a base plate, a main body, a limiting ring, and an expansion sleeve body. The main body is fixedly mounted on the base plate. Bosses are respectively provided on the four end faces of the main body. A limiting ring is provided on each boss. An expansion sleeve body is fixedly mounted on a boss within the limiting ring. A sleeve is fixedly mounted on a boss within the expansion sleeve body. An adjusting bolt is threaded onto the sleeve. An expansion plate is fitted onto the adjusting bolt. A tightening spring is fitted onto the sleeve and adjusting bolt between the expansion plate and the boss. A drive disc is provided on the top of the main body.

[0007] Assembly holes are evenly distributed along the edge of the base plate.

[0008] The drive disk is disc-shaped, and multiple drive slots are evenly distributed on the drive disk, with each drive slot being semi-circular.

[0009] The expansion sleeve is cylindrical, with a flange at one end. A weight-reducing recess is provided around the circumference of the flange. A slit is provided on the circumference of the expansion sleeve and the flange, and a buffer hole is provided in the middle of the slit.

[0010] The expansion piece is disc-shaped, and a second chamfer is provided on the circumference of the expansion piece.

[0011] The expansion piece has a central hole at its center, and the central hole is a stepped hole.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] This expansion sleeve fixture for milling wing nuts works by aligning the inner ring of the wing nut with one of the expansion sleeves in the fixture. The inner ring of the wing nut passes through the flange on the expansion sleeve and is fitted onto it, ensuring one end face of the wing nut is flush with the limiting ring. A hex wrench is then used to rotate the adjusting bolt. During rotation, due to the threaded connection between the adjusting bolt and the sleeve, the adjusting bolt moves forward relative to the sleeve. With the limiting engagement between the center hole of the expansion plate and the nut of the adjusting bolt, the adjusting bolt moves forward, causing the expansion plate to move forward synchronously. At this point, the chamfer of the expansion plate inserts into the expansion sleeve, generating axial pressure. The circumference of the expansion plate contacts the edge of the inner ring of the expansion sleeve, forcing the expansion sleeve to undergo elastic deformation and radial expansion. This radial expansion of the expansion sleeve generates a clamping force on the inner ring of the wing nut, thus fixing the wing nut. Wing nuts are then fitted onto the other three expansion sleeves. After all the wing nuts are installed, milling operations can be performed on the wing nut using a CNC milling lathe. The expansion sleeve fixture for milling holes in wing nuts is easy to assemble and disassemble, effectively reducing manual labor. At the same time, it solves the problem that existing fixtures can only fix a single wing nut, resulting in frequent material change cycles and affecting the efficiency of subsequent milling. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front view structural diagram of the present utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0017] Figure 4 This is a three-dimensional structural diagram of the wing-shaped nut in this utility model.

[0018] In the diagram: 1. Base plate; 2. Main body; 3. Limiting ring; 4. Expansion sleeve; 5. First chamfer; 6. Assembly hole; 7. Boss; 8. Flange; 9. Weight reduction recess; 10. Slit; 11. Buffer hole; 12. Sleeve; 13. Adjusting bolt; 14. Expansion plate; 15. Second chamfer; 16. Center hole; 17. Tightening spring; 18. Drive plate; 19. Drive slot; 20. Wing nut. Detailed Implementation

[0019] As attached Figure 1-4 As shown

[0020] The expansion sleeve body 4 fixture for milling holes in wing nuts includes a base plate 1, a main body 2, a limiting ring 3, and an expansion sleeve body 4. The base plate 1 is a rectangular plate, and a first chamfer 5 is provided at the four corners of the base plate 1. The function of the first chamfer 5 is to remove the sharp edges of the base plate 1 to prevent personnel from being scratched during operation and handling.

[0021] The base plate 1 is provided with mounting holes 6 evenly distributed along its edge. During operation, the base plate 1 can be easily fixed to the rotating platform of the CNC milling lathe by using the mounting holes 6 and bolts.

[0022] A main body 2 is fixedly installed on the base plate 1. The main body 2 is rectangular. Bosses 7 are provided on the four end faces of the main body 2. The bosses 7 are rectangular plates. Limiting rings 3 are fixedly installed on the bosses 7. The limiting rings 3 are circular and are used to limit one end face of the wing nut 20.

[0023] An expansion sleeve body 4 is fixedly installed on the boss 7 inside the limiting ring 3. The expansion sleeve body 4 is cylindrical. A flange 8 is provided on the circumference of one end of the expansion sleeve body 4. A weight-reducing recess 9 is provided on the circumference of the flange 8 to reduce the weight of the expansion sleeve body 4. A slit 10 is provided on the circumference of the expansion sleeve body 4 and the flange 8. The purpose of the slit 10 is to allow the expansion sleeve body 4 to have radial elastic deformation. A buffer hole 11 is provided in the middle of the slit 10. The buffer hole 11 can effectively reduce the axial pressure required when the expansion sleeve body 4 undergoes radial elastic deformation. During operation, due to the slit 10 provided on the circumference of the expansion sleeve body 4 and the flange 8, when the diameter of the expansion sleeve body 4 increases, the elastic deformation of the expansion sleeve body 4 causes the expansion sleeve body 4 to generate a radial clamping force in the inner ring of the wing nut 20. Thus, the expansion sleeve body 4 clamps and fixes the wing nut 20. The flange 8 can form a limiting effect on one end face of the wing nut 20.

[0024] A sleeve 12 is fixedly installed on the boss 7 corresponding to the center position of the ring inside the expansion sleeve body 4. The sleeve 12 is a cylindrical body. An adjusting bolt 13 is installed on the internal thread of the sleeve 12. An expansion plate 14 is fitted on the adjusting bolt 13. The expansion plate 14 is disc-shaped. A second chamfer 15 is provided on the circumference of the expansion plate 14. The second chamfer 15 contacts the inner edge of the port of the expansion sleeve body 4. The second chamfer 15 on the expansion plate 14 serves as a guide, making it easier for the expansion plate 14 to be aligned and inserted into the expansion sleeve body 4, reducing damage to the expansion sleeve body 4 caused by the expansion plate 14.

[0025] The expansion plate 14 has a central hole 16 at its center. The central hole 16 is a stepped hole. The central hole 16 fits into the rod of the adjusting bolt 13. The central hole 16 limits the nut of the adjusting bolt 13. When working, when the adjusting bolt 13 moves forward, it can drive the expansion plate 14 to move forward synchronously.

[0026] A tightening spring 17 is fitted on the sleeve 12 and the adjusting bolt 13 between the expansion plate 14 and the boss 7. During operation, the elastic force of the tightening spring 17 keeps the expansion plate 14 in contact with the nut of the adjusting bolt 13, so that when the adjusting bolt 13 moves forward, it can drive the expansion plate 14 to move forward synchronously.

[0027] The main body 2 is provided with a drive disk 18 at the top. The drive disk 18 is disc-shaped and has multiple drive slots 19 evenly distributed on it. The drive slots 19 are semi-circular. During operation, the rotating jaw of the milling CNC lathe (commercially available part) engages with the drive slots 19 of the drive disk 18, thereby driving the drive disk 18 to rotate through the rotating jaw, so as to control the switching direction of the expansion sleeve body 4 fixture.

[0028] When using the expansion sleeve body 4 fixture for milling holes in wing nuts, first align the inner ring of the wing nut 20 with one of the expansion sleeve bodies 4 of the fixture. Then, pass the inner ring of the wing nut 20 through the flange 8 on the expansion sleeve body 4 and fit it onto the expansion sleeve body 4, so that one end face of the wing nut 20 is in close contact with the limiting ring 3. Then, use a hex wrench to rotate the adjusting bolt 13. During the rotation, because the adjusting bolt 13 is threadedly connected to the sleeve 12, the adjusting bolt 13 rotates forward relative to the sleeve 12, and under the limiting cooperation of the center hole 16 of the expansion plate 14 and the nut of the adjusting bolt 13, the adjusting bolt 13 rotates forward. When the adjusting bolt 13 moves forward, it drives the expansion plate 14 to move forward synchronously. At this time, the chamfer of the expansion plate 14 is inserted into the expansion sleeve body 4, and the expansion plate 14 generates axial pressure. The circumference of the expansion plate 14 contacts the inner ring edge of the port of the expansion sleeve body 4, forcing the expansion sleeve body 4 to undergo elastic deformation. The expansion sleeve body 4 undergoes radial expansion. The radially expanded expansion sleeve body 4 generates a clamping force on the inner ring of the wing nut 20, thereby fixing the wing nut 20. Then, repeat the above steps to install the wing nuts 20 on the other three expansion sleeve bodies 4 respectively. After all the wing nuts 20 are installed, milling operations can be performed on them using a milling CNC lathe.

[0029] The expansion sleeve body 4 fixture for milling holes in wing nuts is easy to assemble and disassemble, effectively reducing manual labor. At the same time, it solves the problem that existing fixtures can only fix a single wing nut 20, resulting in frequent material change cycles and affecting the efficiency of subsequent milling.

Claims

1. A sleeve clamp for milling holes in wing nuts, comprising a base plate (1), a main body (2), a limiting ring (3), and a sleeve body (4), characterized in that: A main body (2) is fixedly installed on the base plate (1). A boss (7) is provided on the four end faces of the main body (2). A limit ring (3) is provided on the boss (7). An expansion sleeve body (4) is fixedly installed on the boss (7) inside the limit ring (3). A sleeve (12) is fixedly installed on the boss (7) inside the expansion sleeve body (4). An adjusting bolt (13) is installed on the internal thread of the sleeve (12). An expansion plate (14) is fitted on the adjusting bolt (13). A tightening spring (17) is fitted on the sleeve (12) between the expansion plate (14) and the boss (7) and the adjusting bolt (13). A drive disc (18) is provided on the top of the main body (2).

2. The expansion sleeve fixture for milling holes in wing nuts according to claim 1, characterized in that: The base plate (1) is provided with mounting holes (6) evenly distributed along its edge.

3. The expansion sleeve fixture for milling holes in wing nuts according to claim 1, characterized in that: The drive disk (18) is disc-shaped, and multiple drive slots (19) are evenly distributed on the drive disk (18). The drive slots (19) are semi-circular.

4. The expansion sleeve fixture for milling holes in wing nuts according to claim 1, characterized in that: The expansion sleeve body (4) is cylindrical. A flange (8) is provided at one end of the expansion sleeve body (4). A weight reduction groove (9) is provided on the circumference of the flange (8). A slit (10) is provided on the circumference of the expansion sleeve body (4) and the flange (8). A buffer hole (11) is provided in the middle of the slit (10).

5. The expansion sleeve fixture for milling holes in wing nuts according to claim 1, characterized in that: The expansion piece (14) is disc-shaped, and a second chamfer (15) is provided on the circumference of the expansion piece (14).

6. The expansion sleeve fixture for milling holes in wing nuts according to claim 1, characterized in that: The expansion piece (14) has a central hole (16) at its center, and the central hole (16) is a stepped hole.

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