Special lathe clamp for machining hexahedron

Abstract

The utility model discloses a special lathe fixture for processing a hexahedron, which is characterized in that a body is a circular casting, a circular bottom plate and a three-sided vertical plate are arranged on the body, and the three-sided vertical plate is positioned on one side of the bottom plate; a mandrel is arranged at the center of a bottom plate of the body, and fastening iron is arranged above three vertical plates of the body; two hexagonal head compression screws are arranged on two sides of the center and in the fastening iron; the hexagonal head compression screw is connected into the sleeve I in a matched mode, and the sleeve I is fixed to the fastening iron. Four double-end bolts are arranged in the fastening iron on each side of the two hexagonal head compression screws, and two double-end bolts are arranged on each side; the fastening iron is fixed with the left vertical plate and the right vertical plate in the three vertical plates of the body; two positioning shafts are connected in a left side vertical plate of the three-face vertical plate of the body, two hexagonal head compression screws are arranged in a right side vertical plate of the three-face vertical plate of the body, the hexagonal head compression screws are connected in a sleeve III in a matched mode, and the sleeve III is fixedly connected with the right side vertical plate. According to the utility model, the practical problem that the hexahedron is difficult to clamp is solved, and meanwhile, the alignment precision, the machining efficiency and the machining consistency are improved.

Description

Technical Field

[0001] This utility model relates to a special lathe fixture for machining hexagonal cubes, belonging to the field of mechanical technology. Background Technology

[0002] In the field of machining, some hexagonal workpieces are time-consuming and labor-intensive to clamp and align during machining. The consistency of machining is not high during mass production. In particular, hexagonal shapes play a very important role in artillery. When machining the thread in the middle of a hexagonal shape on a vertical lathe, it is difficult to clamp the hexagonal shape around its perimeter and it is difficult to ensure the accuracy of alignment, resulting in low machining efficiency. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a special lathe fixture for machining hexagonal blocks. This fixture solves the practical problem of the difficulty in clamping hexagonal blocks, and at the same time improves the alignment accuracy, machining efficiency and machining consistency.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a special lathe fixture for machining hexagonal cubes, including a body, fastening iron, hexagonal head clamping screw, pressure block, sleeve I, double-ended bolt, mandrel, sleeve II, positioning plate, sleeve III and positioning shaft. The body is a circular casting with a circular base plate and three vertical plates on it. The three vertical plates are located on one side of the circular base plate, and the openings of the three vertical plates are arranged upwards. A circular hole is provided in the center of the base plate, and twelve U-shaped grooves are distributed around the circumference of the base plate. A stepped mandrel in a horizontal direction is installed at the center of the base plate of the body. A sleeve II is provided at the connection between the mandrel and the body, and the mandrel is inserted into the sleeve II.

[0005] A downward-facing fastening iron is installed on the top of the three upright plates of the main body. The fastening iron has symmetrical stepped sides. On both sides of the center position, there are two vertical hexagonal head clamping screws in the fastening iron. Each hexagonal head clamping screw has a pressure block at its lower end. A sleeve I is installed in the stepped through hole where the hexagonal head clamping screw connects to the fastening iron. The hexagonal head clamping screw is connected to the sleeve I. The sleeve I is fixed to the fastening iron by a tapered set screw. On each side of the two hexagonal head clamping screws, there are four vertical double-ended bolts threaded into the fastening iron, two on each side. The fastening iron is fixed to the left and right upright plates of the three upright plates of the main body by the double-ended bolts. Each double-ended bolt has a nut on its upper end.

[0006] Two horizontal stepped positioning shafts are connected to the lower part of the left side panel of the three-sided upright plate of the main body. Two horizontal hexagonal head clamping screws are installed at the lower part of the right side panel of the three-sided upright plate of the main body. The ends of the hexagonal head clamping screws are equipped with pressure blocks. A sleeve III is installed in the stepped through hole where the hexagonal head clamping screw connects to the right side panel. The hexagonal head clamping screw is connected to the sleeve III. The sleeve III is fixedly connected to the right side panel by a tapered set screw.

[0007] Inside the three vertical panels of the main body, a positioning plate is fixedly connected to the lower part of the center of the main body base plate by means of cylindrical head screws and cylindrical pins.

[0008] Furthermore, a lifting eye screw is installed at the center of the top of the fastening iron.

[0009] Furthermore, two spaced elongated positioning irons are provided on the horizontal plate of the three vertical plates of the main body.

[0010] Furthermore, the circular base plate and the three vertical plates are integrally cast, and each of the three vertical plates is fixed with three vertical ribs.

[0011] Furthermore, a tool relief groove is provided on the upper left side of the base plate of the main body.

[0012] Furthermore, the positioning plate has two positioning holes and two stepped fastening holes distributed diagonally symmetrically.

[0013] The beneficial effects of this utility model are: This utility model effectively solves the problems of difficulty in clamping and aligning hexagonal objects in artillery, low processing efficiency, and low processing accuracy and consistency. This utility model has positioning blocks in the X, Y, and Z directions, which can complete positioning after clamping, thus improving the alignment efficiency and alignment accuracy. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 yes Figure 1 Side view.

[0017] Figure 3 This is a schematic diagram of a hexagonal structure.

[0018] Figure 4 yes Figure 3 The left view.

[0019] Figure 5 This is a schematic diagram of the main body of this utility model.

[0020] Figure 6 yes Figure 5 The left view.

[0021] Figure 7 yes Figure 5 Top view.

[0022] Figure 8 This is a front view of the fastening iron of this utility model.

[0023] Figure 9 yes Figure 8 Top view.

[0024] Figure 10 This is a schematic diagram of sleeve I of this utility model.

[0025] Figure 11 This is a front view of the mandrel of this utility model.

[0026] Figure 12 yes Figure 11 The left view.

[0027] Figure 13 This is a schematic diagram of the sleeve II of this utility model.

[0028] Figure 14 This is a schematic diagram of the sleeve III of this utility model.

[0029] Figure 15 This is a schematic diagram of the positioning iron of this utility model.

[0030] Figure 16 This is a schematic diagram of the positioning shaft of this utility model.

[0031] Figure 17 This is a schematic diagram of the usage state of this utility model.

[0032] Numbering on the map:

[0033] 1. Body, 2. Fastening iron, 3. Nut, 4. Hexagonal clamping screw, 5. Eye bolt, 6. Pressure block, 7. Sleeve I, 8. Tapered set screw, 9. Double-ended bolt, 10. Mandrel, 11. Sleeve II, 12. Positioning plate, 13. Sleeve III, 14. Positioning iron, 15. Cylindrical head screw, 16. Cylindrical pin, 17. Positioning shaft. Detailed Implementation

[0034] like Figure 1As shown in Figure 17, a special lathe fixture for machining hexagonal cubes includes a body 1, a fastening block 2, a hexagonal head clamping screw 4, a clamping block 6, a sleeve I 7, a double-ended bolt 9, a mandrel 10, a sleeve II 11, a positioning plate 12, a sleeve III 13, and a positioning shaft 17. The body 1 is a circular casting with a circular base plate and three vertical plates on it. The three vertical plates are located on one side of the circular base plate. The circular base plate and the three vertical plates of the body 1 are integrally cast. Each side of the three vertical plates is fixed with a... Three vertical ribs; the openings of the three vertical plates are arranged facing upwards; a tool relief groove is provided on the upper left of the bottom plate of the main body 1; two spaced long strip-shaped positioning irons 14 are provided on the horizontal plate of the three vertical plates of the main body 1; a round hole is provided in the center of the bottom plate; twelve U-shaped grooves are distributed around the circumference of the bottom plate; a horizontal stepped mandrel 10 is installed at the center of the bottom plate of the main body 1; a sleeve II 11 is provided at the connection between the mandrel 10 and the main body 1; the mandrel 10 is fitted into the sleeve II 11.

[0035] A downward-facing fastening iron 2 is installed on the top of the three vertical plates of the main body 1. A lifting eye screw 5 is installed at the center of the top of the fastening iron 2. The two sides of the fastening iron 2 are symmetrically stepped. On both sides of the center position, there are two vertical hexagonal head clamping screws 4 installed in the fastening iron 2. Each hexagonal head clamping screw 4 has a pressure block 6 installed at its lower end. A sleeve I 7 is provided in the stepped through hole where the hexagonal head clamping screw 4 connects to the fastening iron 2. The hexagonal head clamping screw 4 is fitted into the sleeve I 7. The sleeve I 7 is fixedly connected to the fastening iron 2 by a tapered set screw 8. On each side of the two hexagonal head clamping screws 4, there are four vertical double-ended bolts 9 threaded in the fastening iron 2, two on each side. The fastening iron 2 is fixedly connected to the left and right vertical plates of the three vertical plates of the main body 1 by the double-ended bolts 9. Each double-ended bolt 9 has a nut 3 installed on its upper end.

[0036] Two horizontal stepped positioning shafts 17 are connected to the lower part of the left side plate of the three-sided upright plate of the main body 1. Two horizontal hexagonal head clamping screws 4 are installed at the lower part of the right side plate of the three-sided upright plate of the main body 1. A pressure block 6 is installed at the end of the hexagonal head clamping screw 4. A sleeve Ⅲ13 is installed in the stepped through hole at the connection between the hexagonal head clamping screw 4 and the right side upright plate. The hexagonal head clamping screw 4 is connected to the sleeve Ⅲ13. The sleeve Ⅲ13 is fixedly connected to the right side upright plate by a tapered end set screw 8.

[0037] Inside the three vertical plates of the main body 1, a positioning plate 12 is fixedly connected to the lower position of the center of the bottom plate of the main body 1 by means of cylindrical head screws 15 and cylindrical pins 16. The positioning plate 12 has two positioning holes and two stepped fastening holes symmetrically distributed diagonally.

[0038] The body 1 is a circular casting, mainly composed of a base plate and three vertical plates. A circular hole is located in the center of the base plate, and twelve U-shaped grooves are distributed around the base plate for easy clamping. The pressure block 6 works in conjunction with the hexagonal head clamping screw 4 to fasten the hexagonal cube. Sleeve I 7 is a long circular ring used to transition between the stepped through hole on the fastening iron 2 and the hexagonal head clamping screw 4, strengthening the connection. The tapered set screw 8 is used to position and fix sleeve 1 7. The double-ended bolt 9 works with the nut 3 to fasten the fastening iron 2 and the body 1. The mandrel 10 is a stepped shaft with a larger diameter in the middle and six evenly distributed stepped holes, located in the middle of the body 1, used to connect the body 1 and the vertical lathe. Sleeve II 11 is used to transition between the body 1 and the mandrel 10, strengthening the connection. The positioning plate 12 is a square plate with two symmetrically distributed positioning holes and two stepped fastening holes, located in the lower middle part of the body 1, positioning the hexagonal cube in the Z-direction. Sleeve III 13... The through hole installed on the right side plate of the main body 1 serves as a transition connection between the main body 1 and the hexagonal head clamping screw 4; the positioning iron 14 is a rectangular plate with three fastening stepped holes and two positioning through holes, used for positioning the hexagonal cube in the Y direction; the cylindrical head screw 15 and cylindrical pin 16 are used to position the positioning plate 12; the positioning shaft 17 is a stepped shaft, assembled in the through hole on the left side plate of the main body 1, used for positioning the hexagonal cube in the X direction.

[0039] During assembly, first fix the mandrel 10 to the intermediate shaft of the vertical lathe machining platform. After the intermediate hole of the body 1 is interference-fitted with the sleeve II 11, place it on the machining platform of the vertical lathe. The positioning plate 12 is positioned and fastened to the lower middle part of the body 1 by the cylindrical head screw 15 and the cylindrical pin 16. The two positioning irons 14 are positioned and fastened to the horizontal plate on the lower side of the three vertical plates of the body 1 by the cylindrical head screw 15 and the cylindrical pin 16. The positioning shaft 17 is assembled on the left vertical plate of the body 1. The fastening iron 2 is fixed to the upper part of the three vertical plates of the body 1 by the double-ended bolt 9 and the nut 3. The head of the hexagonal clamping screw 4 is equipped with the pressure block 6. The whole assembly is inserted into the sleeve I 7 and the sleeve III 13 respectively and placed into the left and right through holes of the fastening iron 2 and the through hole of the right vertical plate of the body 1. After insertion, M6-6H threaded holes are drilled on the sides of the sleeve 1 7 and III 13, and the tapered end set screws 8 are screwed in to fasten. Finally, the eye bolt 5 is screwed into the intermediate threaded hole at the top of the fastening iron 2.

[0040] How to use:

[0041] 1) Remove fastener 2 and clamp the fixture onto the processing platform using the pressure plate;

[0042] 2) Place the hexagonal cube into the fixture through the notch on the upper side of body 1;

[0043] 3) Secure the fastening iron 2 to the upper part of the body 1 using the double-ended bolt 9 and nut 3;

[0044] 4) Tighten the two hexagonal clamping screws 4 on the upper side of the lathe fixture and the two hexagonal clamping screws 4 on the right side of the lathe fixture to fix the hexagonal body;

[0045] 5) Machining the hexagonal body;

[0046] 6) Loosen the two hexagonal clamping screws 4 on the upper side of the lathe fixture and the two hexagonal clamping screws 4 on the right side of the lathe fixture;

[0047] 7) Remove fastener 2;

[0048] 8) Remove the hexagon;

[0049] 9) Secure the fastening iron 2 to the upper part of the body 1 using the double-ended bolt 9 and nut 3;

[0050] 10) Complete the processing.

Claims

1. A special lathe fixture for machining hexagonal cubes, characterized in that: The assembly includes a body (1), fastening iron (2), hexagonal head clamping screws (4), pressure block (6), sleeve I (7), double-headed bolt (9), mandrel (10), sleeve II (11), positioning plate (12), sleeve III (13) and positioning shaft (17). The body (1) is a circular casting. The body (1) is provided with a circular base plate and three vertical plates. The three vertical plates are located on one side of the circular base plate. The openings of the three vertical plates are arranged facing upwards. A circular hole is provided in the center of the base plate. Twelve U-shaped grooves are distributed around the base plate in the circumferential direction. A stepped mandrel (10) in the horizontal direction is installed at the center of the base plate of the body (1). A sleeve II (11) is provided at the connection between the mandrel (10) and the body (1). The mandrel (10) is inserted into the sleeve II (11). A fastening iron (2) with its opening facing downwards is provided on the upper part of the three vertical plates of the main body (1). The fastening iron (2) has a symmetrical stepped shape on both sides. On both sides of the center position, there are two vertical hexagonal head clamping screws (4) in the fastening iron (2). A pressure block (6) is installed at the end of the hexagonal head clamping screw (4). A sleeve I (7) is provided in the stepped through hole at the connection between the hexagonal head clamping screw (4) and the fastening iron (2). The hexagonal head clamping screw (4) is connected to the sleeve I (7). The sleeve I (7) is fixedly connected to the fastening iron (2) by a tapered set screw (8). On each side of the two hexagonal head clamping screws (4), there are four vertical double-ended bolts (9) threaded in the fastening iron (2), two on each side. The fastening iron (2) is fixedly connected to the left and right vertical plates of the three vertical plates of the main body (1) by the double-ended bolts (9). A nut (3) is installed on the upper end of each double-ended bolt (9). Two horizontal stepped positioning shafts (17) are connected to the lower part of the left side panel of the three-sided panel of the main body (1). Two horizontal hexagonal head clamping screws (4) are installed at the lower part of the right side panel of the three-sided panel of the main body (1). Each hexagonal head clamping screw (4) has a clamping block (6) at its end. A sleeve III (13) is installed in the stepped through hole at the connection between the hexagonal head clamping screw (4) and the right side panel. The hexagonal head clamping screw (4) is connected to the sleeve III (13). The sleeve III (13) is fixedly connected to the right side panel by a tapered end set screw (8). Inside the three vertical panels of the main body (1), a positioning plate (12) is fixedly connected to the lower part of the center of the bottom plate of the main body (1) by a cylindrical head screw (15) and a cylindrical pin (16).

2. The special lathe fixture for machining hexagonal cubes according to claim 1, characterized in that: A lifting eye screw (5) is installed at the center of the top of the fastening iron (2).

3. The special lathe fixture for machining hexagonal cubes according to claim 1, characterized in that: Two spaced long strip positioning irons (14) are provided on the horizontal plate of the three vertical plates of the main body (1).

4. A special lathe fixture for machining hexagonal cubes according to claim 1, characterized in that: The main body (1) is formed by casting a circular base plate and three vertical plates as one piece. Each side of the three vertical plates is fixed with three vertical ribs.

5. A special lathe fixture for machining hexagonal cubes according to claim 1, characterized in that: The bottom plate of the main body (1) has a tool relief groove on the upper left.

6. A special lathe fixture for machining hexagonal cubes according to claim 1, characterized in that: The positioning plate (12) has two positioning holes and two stepped fastening holes distributed diagonally symmetrically.

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