Machine tool clamp for machining special workpiece

Abstract

The utility model discloses a machine tool clamp for machining special workpieces. The machine tool clamp comprises a clamp base, a clamping torque chamber, a torque motor, a torque rotating shaft and a screwing arm. The utility model relates to the technical field of machine tool clamps, in particular to a clamp, a workpiece inner wall supporting structure is matched with an auxiliary expansion fixing assembly, and rotating force generated by a torque motor is converted to a pair of traction supporting walls through a screwing arm, so that the inner wall of a shell machining workpiece is preliminarily attached to the clamp; then an auxiliary expanding fixing assembly is driven to enable four workpiece inner wall attaching blocks to be tightly attached to and fixed to the inner wall of the shell machining workpiece, then a torque motor is finely adjusted, the shell machining workpiece can be fully fixed, meanwhile, the shell machining workpiece cannot be damaged by external force, operation is convenient and fast, and the shell workpiece is protected; and the method is safe and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool fixtures, in particular to a machine tool fixture for mechanical processing of special workpieces. Background Art

[0002] Machine tool fixtures for machining are devices used to fix and support workpieces. They are installed on machine tools to maintain the stability and accurate position of workpieces during machining. The design goal of machine tool fixtures for machining is to ensure the accuracy and stability of workpieces during machining. They can fix and clamp workpieces so that they can be accurately cut, drilled, milled, ground, and other machining operations on machine tools. By using appropriate machine tool fixtures, machining efficiency can be improved, errors can be reduced, and product quality and consistency can be ensured. In a broad sense, any device used to quickly, conveniently, and safely install workpieces in any process can be called a fixture; for shell fixtures, calipers are often used to clamp the outside of the shell, which causes a certain degree of damage to the processed shell. Therefore, this case hopes to propose a machine tool fixture for machining that can stably clamp shell workpieces without damaging the shell itself. For the above problems, there may already be technical means to solve them in the prior art, but this case wants to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above objectives, the utility model is implemented through the following technical solutions: a machine tool fixture for machining special workpieces, comprising: a fixture base, a clamping torque chamber, a torque motor, a torque shaft and a twisting arm, the clamping torque chamber is installed at the bottom of the fixture base, the torque motor is installed in the clamping torque chamber, a shaft placement through hole is opened on the fixture base, the torque shaft is inserted into the fixture base through the placement through hole, and the torque shaft is connected to the torque motor, the twisting arm is installed on the torque shaft, and a workpiece inner wall support structure is installed on the fixture base;

[0004] The workpiece inner wall support structure includes: a plurality of coupling sliding keys, a plurality of bearing slide blocks, a pair of slide block bearing laminating plates, a pair of traction support walls and a pair of traction multi-links;

[0005] A number of the coupling keys are respectively installed on the clamp base, a number of the bearing sliders are respectively installed on a number of the coupling keys, a pair of the slider bearing bonding plates are respectively installed on a number of the bearing sliders, a pair of the traction support walls are respectively installed on a pair of the slider bearing bonding plates, a pair of the traction multi-links are respectively installed on a pair of the slider bearing bonding plates through rotating shafts, and a pair of the traction multi-links are respectively connected to the rotating arms through rotating shafts, and auxiliary expansion fixing components are respectively installed on a pair of the traction support walls.

[0006] It should be noted that, in the above, the shell processing part is sleeved on a pair of traction support walls, and then the torque motor in the torque chamber on the fixture base is driven to make the torque shaft drive the twisting arm to rotate, thereby pulling a pair of traction multi-links, pulling a pair of slider bearing bonding plates to slide, so that the four bearing sliders slide along the four coupling sliding keys. In summary, it can be concluded that the traction support wall is driven and carries the auxiliary expansion and fixing assembly to perform a preliminary fit to the inner wall of the shell, and then the auxiliary expansion and fixing assembly is used to make a further tight fit to the inner side of the shell until the pressure sensor provided on the expansion support block senses the appropriate pressure and stops applying pressure. The properly fixed shell workpiece can then be further processed by the machine tool without the shell being damaged by external force.

[0007] Preferably, the auxiliary expansion and fixing assembly includes: a pair of micro-drive screwing motors, a pair of reverse threaded rods, a plurality of expansion support blocks, a plurality of buffer fitting springs, and a plurality of workpiece inner wall fitting blocks;

[0008] A pair of the micro-drive screwing motors are respectively installed on a pair of the traction support walls, and the pair of the micro-drive screwing motors are respectively connected to a pair of the reverse threaded rods, and the pair of the reverse threaded rods are respectively installed in a pair of the traction support walls, and a pair of the traction support walls are respectively provided with a pair of expansion block movement slots, and a plurality of the expansion support blocks are respectively installed on the pair of the reverse threaded rods through a pair of the expansion block movement slots, and a plurality of the buffer fitting springs are respectively installed on both sides of a plurality of the expansion support blocks, and a plurality of the buffer fitting springs are respectively connected to a plurality of the inner wall fitting blocks;

[0009] It should be noted that, in the above, after the shell workpiece is initially fitted, a pair of micro-drive screwing motors are driven to rotate a pair of reverse-threaded threaded rods. Because the threads arranged on the pair of reverse-threaded threaded rods are relative and reverse threads, the pair of expansion support blocks thereon will move relative to each other during rotation, thereby expanding or contracting the workpiece inner wall fitting block until the workpiece inner wall fitting block is fitted to the inner side wall of the shell processing workpiece, and then the buffer fitting spring is used for fitting compression until the pressure sensor arranged on the expansion support block senses the appropriate pressure and stops applying pressure, so that the workpiece inner wall fitting block can fit the processing workpiece to the greatest extent. The inner side wall shape of the part will not be deformed due to excessive extrusion. The machine tool mounting flange arranged on the fixture base can conveniently fix the fixture at the required position of the machine tool. When the smaller shell cannot be put on the fixture, it can be placed between a pair of traction support walls, and then the pair of traction support walls are brought close to each other through the workpiece inner wall support structure, and then the four expansion support blocks are driven to gradually move closer to each other, so that the four workpiece inner wall fitting blocks on the inner side of the four expansion support blocks fit the outer wall of the shell workpiece to achieve locking and clamping on the outside. Therefore, it can be concluded that the size application range and compatibility of this fixture are very high.

[0010] Preferably, a pressure sensor is provided on the expansion support block;

[0011] Preferably, a motor inspection port is provided on the clamping torque chamber;

[0012] Preferably, a non-slip rubber pad is provided on the workpiece inner wall fitting block;

[0013] Preferably, a machine tool mounting flange is provided on the fixture base. Beneficial Effects

[0014] The utility model provides a machine tool fixture for machining special workpieces. It has the following beneficial effects, compared with the prior art: the fixture uses the workpiece inner wall support structure to cooperate with the auxiliary expansion and fixing component, and uses the rotation force generated by the torque motor to be converted to a pair of traction support walls through the twisting arm, so that the inner wall of the shell processing workpiece and the fixture are initially fitted, and then the auxiliary expansion and fixing component is driven to make the four workpiece inner wall fitting blocks tightly fit to the inner wall of the shell processing workpiece and fix, and then fine-tune the torque motor to fully fix the shell processing workpiece without damaging the shell processing workpiece due to external force, which is convenient to operate and protects the shell workpiece, improves the yield rate, and is safe and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main cross-sectional structure of a machine tool fixture for machining a special workpiece described in the utility model.

[0016] Figure 2The utility model is a schematic diagram of the top view of the structure of a machine tool fixture for machining a special workpiece.

[0017] Figure 3 for Figure 2 A partial enlarged schematic diagram of "A" in the figure.

[0018] In the figure: 1. Clamp base; 2. Clamping torque chamber; 3. Torque motor; 4. Torque shaft; 5. Twist arm; 6. Coupling slide key; 7. Load-bearing slider; 8. Slider-bearing bonding plate; 9. Traction support wall; 10. Traction multi-link; 11. Micro-drive twist motor; 12. Reverse threaded threaded rod; 13. Extension support block; 14. Buffer bonding spring; 15. Workpiece inner wall bonding block. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control. Example

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-3As shown, a machine tool fixture for machining special workpieces includes: a fixture base 1, a clamping torque chamber 2, a torque motor 3, a torque shaft 4 and a twisting arm 5, wherein the clamping torque chamber 2 is installed at the bottom of the fixture base 1, the torque motor 3 is installed in the clamping torque chamber 2, the fixture base 1 is provided with a shaft placement through hole, the torque shaft 4 is inserted into the fixture base 1 through the placement through hole, and the torque shaft 4 is connected to the torque motor 3, the twisting arm 5 is installed on the torque shaft 4, and the workpiece is installed on the fixture base 1 Inner wall support structure; the workpiece inner wall support structure includes: a plurality of coupling sliding keys 6, a plurality of bearing sliders 7, a pair of slider bearing bonding plates 8, a pair of traction support walls 9 and a pair of traction multi-links 10; a plurality of the coupling sliding keys 6 are respectively installed on the fixture base 1, a plurality of the bearing sliders 7 are respectively installed on a plurality of the coupling sliding keys 6, a pair of the slider bearing bonding plates 8 are respectively installed on a plurality of the bearing sliders 7, a pair of the traction support walls 9 are respectively installed on a pair of the slider bearing bonding plates 8, a pair of the traction multi-links 10 The two traction multi-links 10 are respectively installed on a pair of the slider bearing bonding plates 8 through a rotating shaft, and a pair of the traction multi-links 10 are respectively connected to the twisting arm 5 through a rotating shaft, and an auxiliary expansion fixing component is respectively installed on a pair of the traction support walls 9; the auxiliary expansion fixing component includes: a pair of micro-drive twisting motors 11, a pair of reverse threaded threaded rods 12, a plurality of expansion support blocks 13, a plurality of buffer bonding springs 14, and a plurality of workpiece inner wall bonding blocks 15; a pair of the micro-drive twisting motors 11 are respectively installed on a pair of the traction support walls 9, and ... The twisting motor 11 is respectively connected to a pair of the reverse threaded rods 12, and the pair of the reverse threaded rods 12 are respectively installed in a pair of the traction support walls 9, and a pair of expansion block movement slots are respectively opened on the pair of the traction support walls 9. A number of the expansion support blocks 13 are respectively installed on the pair of the reverse threaded rods 12 through a pair of the expansion block movement slots, and a number of the buffer fitting springs 14 are respectively installed on both sides of a number of the expansion support blocks 13, and a number of the buffer fitting springs 14 are respectively connected to a number of the inner wall fitting blocks.

[0022] According to the attached Figure 1-3It is concluded that the shell processing part is put on a pair of traction support walls 9, and then the torque motor 3 in the torque chamber 2 on the clamp base 1 is driven, so that the torque shaft 4 drives the twisting arm 5 to rotate, thereby pulling a pair of traction multi-links 10, pulling a pair of slider bearing bonding plates 8 to slide, so that the four bearing sliders 7 slide along the four coupling sliding keys 6. In summary, it can be concluded that the traction support wall 9 is driven and carries the auxiliary expansion and fixing component to perform a preliminary fit to the inner wall of the shell, and then the auxiliary expansion and fixing component is used to further tightly fit the inner side of the shell until the pressure sensor set on the expansion support block 13 stops applying pressure after sensing the appropriate pressure. The properly fixed shell workpiece can be further processed by the machine tool later without damaging the shell by external force; when the shell workpiece is initially fitted, a pair of micro-drive twisting motors 11 are driven to rotate a pair of reverse threaded rods 12, because the threads set on the pair of reverse threaded rods 12 are relative and reverse threads, which will cause one of them to rotate during rotation. The expansion support block 13 is relatively moved, thereby expanding or contracting it until the workpiece inner wall fitting block 15 fits the inner side wall of the shell processing workpiece, and then is compressed by the buffer fitting spring 14 until the pressure sensor arranged on the expansion support block 13 senses the appropriate pressure and stops applying pressure, so that the workpiece inner wall fitting block 15 can fit the shape of the inner side wall of the processed workpiece to the greatest extent, and the shell workpiece will not be deformed due to excessive squeezing. The machine tool mounting flange arranged on the fixture base 1 can conveniently fix the fixture at the required position of the machine tool. When a smaller shell cannot be mounted on the fixture, it can be placed between a pair of traction support walls 9, and then the pair of traction support walls 9 are brought close to each other through the workpiece inner wall support structure, and then the four expansion support blocks 13 are driven to gradually move closer to each other, so that the four workpiece inner wall fitting blocks 15 on the inner side of the four expansion support blocks 13 fit the outer side wall of the shell workpiece, realizing the locking and clamping fixation of the outer side. Therefore, it can be concluded that the size application range and compatibility of this fixture are very high.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine tool fixture for machining special workpieces, comprising: A clamp base (1), a clamping torque chamber (2), a torque motor (3), a torque shaft (4) and a twisting arm (5), characterized in that the clamping torque chamber (2) is mounted at the bottom of the clamp base (1), the torque motor (3) is mounted in the clamping torque chamber (2), a shaft placement through hole is provided on the clamp base (1), the torque shaft (4) is inserted into the clamp base (1) through the placement through hole, and the torque shaft (4) is connected to the torque motor (3), the twisting arm (5) is mounted on the torque shaft (4), and a workpiece inner wall support structure is installed on the clamp base (1); The workpiece inner wall support structure comprises: a plurality of coupling sliding keys (6), a plurality of bearing slide blocks (7), a pair of slide block bearing bonding plates (8), a pair of traction support walls (9) and a pair of traction multi-links (10); A plurality of coupling slide keys (6) are respectively mounted on the clamp base (1); a plurality of bearing sliders (7) are respectively mounted on a plurality of coupling slide keys (6); a pair of slider bearing bonding plates (8) are respectively mounted on a plurality of bearing sliders (7); a pair of traction support walls (9) are respectively mounted on a pair of slider bearing bonding plates (8); a pair of traction multi-links (10) are respectively mounted on a pair of slider bearing bonding plates (8) via rotating shafts; and a pair of traction multi-links (10) are respectively connected to the twisting arms (5) via rotating shafts; and an auxiliary expansion fixing assembly is respectively mounted on a pair of traction support walls (9).

2. A machine tool fixture for machining special workpieces according to claim 1, characterized in that: The auxiliary expansion fixing assembly comprises: a pair of micro-drive screwing motors (11), a pair of reverse threaded rods (12), a plurality of expansion support blocks (13), a plurality of buffer fitting springs (14), and a plurality of workpiece inner wall fitting blocks (15); A pair of the micro-drive screwing motors (11) are respectively mounted on a pair of the traction support walls (9), and the pair of the micro-drive screwing motors (11) are respectively connected to a pair of the reverse threaded rods (12), and the pair of the reverse threaded rods (12) are respectively mounted in a pair of the traction support walls (9), and a pair of expansion block movement slots are respectively opened on the pair of the traction support walls (9), and a plurality of the expansion support blocks (13) are respectively mounted on the pair of the reverse threaded rods (12) through the pair of the expansion block movement slots, and a plurality of the buffer fitting springs (14) are respectively mounted on both sides of a plurality of the expansion support blocks (13), and a plurality of the buffer fitting springs (14) are respectively connected to a plurality of the inner wall fitting blocks.

3. A machine tool fixture for machining special workpieces according to claim 2, characterized in that: The expansion support block (13) is provided with a pressure sensor.

4. A machine tool fixture for machining special workpieces according to claim 3, characterized in that: The clamping torque chamber (2) is provided with a motor maintenance port.

5. A machine tool fixture for machining special workpieces according to claim 4, characterized in that: An anti-slip rubber pad is provided on the workpiece inner wall fitting block (15).

6. A machine tool fixture for machining special workpieces according to claim 5, characterized in that: The fixture base (1) is provided with a machine tool mounting flange.

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