Numerical control machine tool machining clamp

Abstract

The invention relates to the technical field of numerical control, in particular to a numerical control machine tool machining clamp which comprises a fixing table, a connecting table is arranged at the bottom of the fixing table, a bottom supporting seat is arranged at the bottom of the connecting table, a first rotating bearing is arranged on the inner wall of the fixing table, and a placing table is arranged on the outer wall of the first rotating bearing. According to the numerical control machine tool machining clamp, the flexible jaw is arranged at the top of the containing table, damage to the surface of a workpiece in the machining process is reduced to the maximum extent through the arrangement of the flexible jaw, compared with a rigid jaw, the flexible jaw can evenly disperse clamping force, damage to the surface of the workpiece due to too large local pressure is reduced, and the machining efficiency is improved. The appearance and the precision of a workpiece can be better kept, so that the surface of the workpiece is protected, the machining yield of the workpiece is ensured, the clamping requirements of workpieces of different shapes, sizes and materials can be met, jaws of different specifications do not need to be frequently replaced, the machining efficiency is improved, and the tool cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of numerical control technology, and specifically to a machining fixture for a numerically controlled machine tool. Background Art

[0002] During the conventional numerical control machining process, a vise is usually used to fix the blank on the milling machine workbench for machining. The use of the vise ensures the stability and positioning accuracy of the workpiece during machining.

[0003] However, it cannot cope with the machining of complex profiles and curved surfaces, which limits the machining efficiency. With the increasing demand for complex components in the field of machining, especially those with curved surfaces, the traditional vise fixture can no longer meet the requirements for accurate positioning and fixing of workpieces in curved surface machining, which has promoted the birth of fixtures capable of machining curved surfaces. With the rise of the multi-variety, small-batch production mode, the fixture needs to be able to be quickly adjusted to adapt to the machining requirements of different curved surfaces. Therefore, we propose a machining fixture for a numerically controlled machine tool. Summary of the Invention

[0004] The present invention provides the following technical solution: A machining fixture for a numerically controlled machine tool, including a fixed table, a connecting table is provided at the bottom of the fixed table, a bottom support seat is provided at the bottom of the connecting table, a first rotating bearing is provided on the inner wall of the fixed table, a placement table is provided on the outer wall of the first rotating bearing, an adjusting component is provided on the outer wall of the placement table, and fixing components are provided on both sides of the outer wall of the placement table; The fixing component includes a moving plate provided on the outer wall of the placement table, a plurality of flexible jaws are provided on the outer wall of the moving plate, a fixing column is sleeved on the outer wall of the flexible jaw, a spring is fixedly connected to the outer wall of the fixing column, a connecting block is fixedly connected to the bottom of the spring, an oil tank is provided on the inner wall of the moving plate near the connecting block, a connecting pipe is fixedly connected to the bottom of the oil tank, a collecting box is provided at the bottom of the connecting pipe, a movable box is provided in the inner wall of the collecting box, and a connecting arc is fixedly connected to the bottom of the movable box.

[0005] Preferably: The fixing component further includes an oil inlet on the outer wall of the sliding groove, a ball is clamped and movable in the inner wall of the flexible jaw, and a rubber pad is fixedly connected to the outer wall of the ball.

[0006] Preferably: A brush is provided in the inner wall of the connecting arc, two steel balls are provided in the inner wall of the movable box, the two steel balls are made of stainless steel, and an oil outlet is provided on the outer wall of the brush.

[0007] Preferably: Slots are provided at both the upper and lower ends of the collecting box and the movable box, a spring is provided on the outer wall of the movable box, and the other end of the spring is connected to the collecting box.

[0008] Preferably, the adjustment component comprises an adjustment knob located on the outer wall of the placement table, the outer wall of the adjustment knob is fixedly connected with a screw rod, and the outer wall of the screw rod is sleeved with a moving block.

[0009] Preferably, the position of the oil inlet corresponds to the connecting block.

[0010] Preferably, a threaded column is fixedly connected to the outer wall of the placement table, and a second fixing nut is threadedly connected to the outer wall of the threaded column.

[0011] Preferably, a sliding groove is provided on the surface of the placement table, and the sliding groove effectively limits the fixing component.

[0012] Preferably, a first fixing nut is provided on the inner wall of the fixing platform, and a second rotating bearing is provided on the inner wall of the bottom supporting seat.

[0013] Preferably, a magnetic attraction plate is provided on the outer wall of the placement table at a side away from the sliding groove, and the outer wall of the magnetic attraction plate is configured as an easily detachable magnet.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The CNC machine tool processing fixture has flexible jaws set on the top of the placement table. The setting of the flexible jaws minimizes the damage to the workpiece surface during processing. Compared with the rigid jaws, the flexible jaws can evenly disperse the clamping force and reduce the damage to the workpiece surface caused by excessive local pressure. It can better maintain the appearance and precision of the workpiece, thereby protecting the workpiece surface and ensuring the yield rate of workpiece processing. It can adapt to the clamping needs of workpieces of various shapes, sizes and materials. There is no need to frequently replace jaws of different specifications, which improves processing efficiency and reduces tooling costs. The flexible jaws can automatically adjust the fit according to the shape and surface contour of the workpiece, and can hold the workpiece tightly. Even irregularly shaped workpieces can be stably clamped. When clamping molds with complex curved surfaces, it can effectively prevent the workpiece from displacement and shaking during processing.

[0015] 2. The CNC machine tool processing fixture is provided with a first rotating bearing on the inner wall of the fixed table, which is convenient for the reference origin tooling for tool positioning in the X-axis direction. By adjusting the direction of the slide rail, the distance, width and height can be easily adjusted, thereby saving tool setting time, improving work efficiency and positioning accuracy of parts, and ensuring the accuracy of CNC milling machine processing. The rotatable fixture can automatically adjust the rotation angle, which is convenient for processing different surfaces of the workpiece, thereby improving processing efficiency and accuracy. In the processing of complex parts, the rotatable fixture can reduce the number of clamping times and reduce errors. The rotatable fixture avoids the accumulation of errors caused by frequent clamping by reducing the number of clamping times and adjustment time of the workpiece, while shortening the processing cycle and improving the utilization rate of the equipment.

[0016] 3. For the machining fixture of this CNC machine tool, the brush and the moving block move simultaneously. When there is no lubricating oil flowing out, it can effectively clean the debris falling off due to grinding on the lead screw, preventing the moving block from getting stuck and unable to move back and forth when the adjusting knob is rotated to adjust the tightness. The lubricating oil can not only reduce friction but also make the lead screw run more smoothly, reduce jamming and sluggishness, ensure the precise transmission of the equipment. For example, in a CNC machine tool, it can make the tool position more accurate, improve the machining accuracy, and a protective film is formed on the surface of the lead screw to isolate air and moisture, prevent the lead screw from rusting and corroding, and can also reduce wear, extend the service life of the lead screw and related components, reduce the equipment maintenance and replacement frequency, and improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the placing table of the present invention; Figure 3 is a structural schematic diagram of the fixing component of the present invention; Figure 4 is the second structural schematic diagram of the fixing component of the present invention; Figure 5 is a structural schematic diagram of the adjusting component of the present invention; Figure 6 is the second structural schematic diagram of the adjusting component of the present invention; Figure 7 is the third structural schematic diagram of the fixing component of the present invention; Figure 8 is the second three-dimensional structural schematic diagram of the present invention; Figure 9 is a structural schematic diagram of the second rotating bearing of the present invention; Figure 10 is another perspective view of the three-dimensional structure of the present invention.

[0018] In the figure: 1, fixed table; 2, connecting table; 3, bottom support seat; 4, first fixing nut; 5, first rotating bearing; 6, placing table; 7, adjusting component; 71, adjusting knob; 72, lead screw; 73, moving block; 8, fixing component; 81, moving plate; 82, flexible jaw; 83, ball; 84, rubber pad; 85, fixing column; 86, spring; 87, connecting block; 88, fuel tank; 89, connecting pipe; 810, collection box; 811, movable box; 812, oil inlet; 813, steel ball; 814, brush; 815, oil outlet; 816, connecting arc; 9, sliding groove; 10, threaded column; 11, magnetic attraction plate; 12, second rotating bearing; 13, second fixing nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1-10 shown, this embodiment provides a machining fixture for a numerically controlled machine tool, including a fixed table 1. A connecting table 2 is provided at the bottom of the fixed table 1, and a bottom support base 3 is provided at the bottom of the connecting table 2. A first rotating bearing 5 is provided on the inner wall of the fixed table 1. A placing table 6 is provided on the outer wall of the first rotating bearing 5. An adjusting assembly 7 is provided on the outer wall of the placing table 6, and fixing assemblies 8 are provided on both sides of the outer wall of the placing table 6. The fixing assembly 8 includes a moving plate 81 located on the outer wall of the placing table 6. A plurality of flexible jaws 82 are provided on the outer wall of the moving plate 81. A fixing column 85 is sleeved on the outer wall of the flexible jaw 82. A spring 86 is fixedly connected to the outer wall of the fixing column 85. The bottom of the spring 86 is fixedly connected to a connecting block 87. An oil tank 88 is provided on one side of the inner wall of the moving plate 81 close to the connecting block 87. A connecting pipe 89 is fixedly connected to the bottom of the oil tank 88. A collecting box 810 is provided at the bottom of the connecting pipe 89. An activity box 811 is provided on the inner wall of the collecting box 810, and a connecting arc 816 is fixedly connected to the bottom of the activity box 811.

[0021] It should be noted that a first rotating bearing 5 is provided on the inner wall of the fixed table 1, which is convenient for the reference origin tooling for tool setting and positioning in the X-axis direction. By adjusting the direction of the slide rail, the distance, width and height can be easily adjusted, thereby saving the tool setting time, improving the work efficiency and the positioning accuracy of the parts, ensuring the accuracy of numerical control milling machine processing. The rotatable fixture can automatically adjust the rotation angle, which is convenient for machining different surfaces of the workpiece, thereby improving the machining efficiency and accuracy. In the machining of complex parts, the rotatable fixture can reduce the number of clamping times, reduce errors, and the rotatable fixture avoids the error accumulation caused by frequent clamping by reducing the number of clamping times and adjustment time of the workpiece, while shortening the machining cycle and improving the utilization rate of the equipment. The flexible jaws 82 are arranged on the top of the placement table 6. The arrangement of the flexible jaws 82 minimizes the damage to the surface of the workpiece during the machining process. Compared with the rigid jaws, the flexible jaws can evenly disperse the clamping force, reduce the damage to the workpiece surface caused by excessive local pressure, better maintain the appearance and accuracy of the workpiece, thereby protecting the workpiece surface, ensuring the yield rate of the workpiece machining, and can meet the clamping requirements of workpieces with various different shapes, sizes and materials. There is no need to frequently replace jaws of different specifications, which improves the machining efficiency, reduces the tooling cost, and the flexible jaws can automatically adjust the fitting degree according to the shape and surface contour of the workpiece, can tightly hold the workpiece, and even for workpieces with irregular shapes, stable clamping can be achieved. When clamping a mold with a complex curved surface, it can effectively prevent the workpiece from shifting and shaking during the machining process; When the flexible jaws 82 clamp an object, the thrust causes the flexible jaws 82 to slide in the fixed column 85 and squeeze the spring 86 arranged on the outer wall. The spring 86 drives the connecting block 87 to move backward under the force. When the object clamped on the outer wall of the flexible jaws 82 is taken out, the thrust received by the spring 86 disappears and it automatically resets. Moreover, the other end of the flexible jaws 82 is connected to the connecting block 87. The connecting block 87 moves backward after being stressed at the front end, pressing the flexible material oil tank 88 arranged at the rear. The other end of the connecting arc 816 connected to the bottom of the oil tank 88 is fixed on the moving block 73. As the moving block 73 moves, the lubricating oil gradually flows to the brush 814 on the inner wall of the connecting arc 816. The brush 814 moves with the moving block 73 and effectively sweeps the debris falling off due to grinding on the lead screw 72 when there is no lubricating oil, effectively preventing the moving block 73 from jamming and being unable to move back and forth when the adjusting knob 71 is rotated to adjust the tightness due to the accumulation of debris on the lead screw 72; The lubricating oil can not only reduce friction but also make the lead screw run more smoothly, reduce jamming and sluggishness phenomena, and ensure the precise transmission of the equipment. For example, in a numerically controlled machine tool, it can make the tool position more accurate, improve the machining accuracy, and a protective film is formed on the surface of the lead screw to isolate air and moisture, prevent the lead screw from rusting and corroding, and can also reduce wear, extend the service life of the lead screw and related components, reduce the equipment maintenance and replacement frequency, and improve the reliability and stability of the equipment.

[0022] In an optional embodiment: The fixing assembly 8 further includes an oil inlet 812 located on the outer wall of the sliding groove 9. A ball 83 is clamped and movable on the inner wall of the flexible jaws 82, and a rubber pad 84 is fixedly connected to the outer wall of the ball 83.

[0023] It should be noted that when clamping the curved surface component, since the inner wall of the flexible jaw 82 is rotatably connected with a movable ball 83, and a rubber pad 84 is fixed on the outer wall of the ball 83. When the object to be polished is clamped on the rubber pad 84, the rubber pad 84 effectively increases the friction force. And when the atomizing cup to be clamped is prone to being knocked, the rubber pad 84 can minimize the damage to the surface of the workpiece during the processing, thereby protecting the surface of the workpiece.

[0024] In an optional embodiment: a brush 814 is provided on the inner wall of the connecting arc 816, and two steel balls 813 are provided on the inner wall of the movable box 811. The two steel balls 813 are made of stainless steel, and an oil outlet 815 is provided on the outer wall of the brush 814.

[0025] It should be noted that a movable box 811 is sleeved on the inner wall of the collection box 810, and the lubricating oil flows into the collection box 810 for storage. When the moving block 73 starts to move on the lead screw 72, the two steel balls 813 on the inner wall of the movable box 811 start to roll. Since a spring is fixed on the outer wall of the movable box 811, when the steel ball 813 collides with the movable box 811 under force, the movable box 811 moves left and right in the collection box 810, effectively limiting the speed of the lubricating oil, effectively restricting the flow rate of the lubricating oil, and effectively preventing it from overflowing and dripping onto the workbench during application due to too fast a flow rate, which is difficult to clean.

[0026] In an optional embodiment: notch openings are provided at both the upper and lower ends of the collection box 810 and the movable box 811, and a spring is provided on the outer wall of the movable box 811, and the other end of the spring is connected to the collection box 810.

[0027] It should be noted that since notch openings are provided at the bottoms of both the collection box 810 and the movable box 811, the lubricating oil will flow out only when the notch openings of the collection box 810 and the movable box 811 move to be in communication with each other after the movable box 811 moves.

[0028] In an optional embodiment: the adjusting assembly 7 includes an adjusting knob 71 located on the outer wall of the placement table 6, a lead screw 72 is fixedly connected to the outer wall of the adjusting knob 71, and a moving block 73 is sleeved on the outer wall of the lead screw 72.

[0029] It should be noted that when the moving plate 81 needs to be adjusted, since the bottom of the moving plate 81 is connected with a moving block 73, rotating the adjusting knob 71 causes the moving block 73 to rotate on the lead screw 72.

[0030] In an optional embodiment: the position of the oil inlet 812 corresponds to the connecting block 87.

[0031] It should be noted that since the position of the oil inlet 812 corresponds to the connecting block 87, when the connecting block 87 is forced to move backward, it can accurately press on the oil inlet 812, improving the accuracy of the equipment.

[0032] In an optional embodiment: a threaded column 10 is fixedly connected to the outer wall of the placement table 6 , and a second fixing nut 13 is threadedly connected to the outer wall of the threaded column 10 .

[0033] It should be noted that during the installation process, the thread can accurately determine the position and relative relationship of the connected parts and ensure the assembly accuracy of the equipment. For example, in the connection between the workbench and the bed of a machine tool, the threaded column can enable the workbench to be accurately installed in the predetermined position to ensure the machining accuracy of the machine tool. During installation, you only need to screw the threaded column into the corresponding threaded hole or screw it with the nut. The operation can be completed using simple tools such as wrenches. No complicated processes and equipment are required. The threaded column cooperates with the nut or threaded hole through the thread to generate a large axial force, so that the connected parts fit tightly. When subjected to large tension, pressure and shear force, it is not easy to loosen or fall off, thereby ensuring the stability of the connection. For example, the assembly of the engine block often uses threaded columns to connect, which can withstand various complex forces when the engine is running.

[0034] In an optional embodiment: a sliding groove 9 is provided on the surface of the placement table 6 , and the sliding groove 9 effectively limits the fixing component 8 .

[0035] It should be noted that when the fixing component 8 needs to clamp an object, the adjusting knob 71 is turned to adjust the distance, and the sliding groove 9 effectively limits the moving track of the fixing component 8, thereby increasing the stability of the device.

[0036] In an optional embodiment: a first fixing nut 4 is provided on the inner wall of the fixing platform 1 , and a second rotating bearing 12 is provided on the inner wall of the bottom supporting seat 3 .

[0037] It should be noted that the second rotating bearing 12 is provided to facilitate the equipment to cooperate with the first rotating bearing 5, so that the equipment can realize 360-degree free rotation in the horizontal direction. The bottom of the support plate is equipped with a bidirectional screw. By rotating clockwise or counterclockwise, the horizontal rotation can be clamped and fixed to ensure the yield rate of workpiece processing. In CNC processing, different processing tasks have different requirements for the posture and position of the workpiece. The rotatable fixture can flexibly adjust the rotation angle and direction of the workpiece according to specific processing requirements, thereby enhancing the adaptability of processing.

[0038] In an optional embodiment: a magnetic attraction plate 11 is provided on the outer wall of the placement table 6 at a side away from the sliding groove 9, and the outer wall of the magnetic attraction plate 11 is set as an easily detachable magnet.

[0039] It should be noted that since the debris generated during the grinding process will fly everywhere, the magnetic adsorption plate can quickly adsorb ferromagnetic debris, prevent it from scattering on the ground and the workbench, reduce the cleaning workload, keep the working environment clean, and reduce safety hazards such as slipping. At the same time, if the debris enters the gaps, bearings and other parts of the grinding equipment or other tools, it will aggravate the wear and even cause equipment failures. The magnetic adsorption plate can adsorb most of the debris, reduce the damage risk of the equipment and tools, extend the service life, reduce the impact of the debris on the equipment, enable the equipment to maintain good performance, ensure the quality and stability of the grinding work, reduce the maintenance cost and the equipment replacement frequency. The magnetic adsorption plate 11 provided on the outer wall of the placement table 6 is of the pull-out type. When cleaning is required, since the magnetic adsorption plate 11 is conveniently disassembled, the debris on the tabletop can be cleaned in time, effectively improving the work efficiency.

[0040] Working principle: A first rotating bearing 5 is provided on the inner wall of the fixed table 1, which is a reference origin tooling for tool setting and positioning in the X-axis direction. When the moving plate 81 needs to be adjusted, since the bottom of the moving plate 81 is connected with a moving block 73, rotating the adjustment knob 71 causes the moving block 73 to rotate on the lead screw 72. When the flexible jaw 82 clamps an object, when clamping a curved surface component, since the inner wall of the flexible jaw 82 is rotatably connected with movable balls 83, and a rubber pad 84 is fixed on the outer wall of the balls 83. When the object to be ground is clamped on the rubber pad 84, the rubber pad 84 effectively increases the friction force. And when the atomizing cup to be clamped is prone to being knocked, the rubber pad 84 can minimize the damage to the surface of the workpiece during the processing, thereby protecting the surface of the workpiece. The thrust causes the flexible jaw 82 to slide in the fixed column 85 and squeeze the spring 86 provided on the outer wall. The spring 86 drives the connecting block 87 to move backward under the action of the force. When the object clamped on the outer wall of the flexible jaw 82 is taken out, the thrust received by the spring 86 disappears and it automatically resets. And the other end of the flexible jaw 82 is connected with the connecting block 87. The connecting block 87 moves backward after being stressed at the front end, pressing the flexible material oil tank 88 provided at the rear. The other end of the connecting arc 816 connected to the bottom of the oil tank 88 is fixed on the moving block 73. An activity box 811 is sleeved on the inner wall of the collection box 810, and the lubricating oil flows into the collection box 810 for storage. Grooves are provided at the bottoms of both the collection box 810 and the activity box 811. When the activity box 811 moves, the lubricating oil will flow out only when the grooves of the collection box 810 and the activity box 811 move to be in communication. When the moving block 73 starts to move on the lead screw 72, the two steel balls 813 on the inner wall of the movable box 811 start to roll. Since a spring is fixed to the outer wall of the movable box 811, when the steel balls 813 are forced to collide with the movable box 811, the movable box 811 moves left and right within the collection box 810, effectively limiting the speed of the lubricating oil. As the moving block 73 moves, the lubricating oil gradually flows onto the brush 814 on the inner wall of the connecting arc 816. The brush 814 moves with the moving block 73 and effectively sweeps the debris falling off due to grinding on the lead screw 72 when there is no lubricating oil, effectively preventing the moving block 73 from jamming and being unable to move back and forth when the adjusting knob 71 is rotated to adjust the tightness due to the accumulation of debris on the lead screw 72; When clamping the curved surface assembly, since the inner wall of the flexible jaw 82 is rotatably connected with movable balls 83, and a rubber pad 84 is fixed to the outer wall of the balls 83. When the object to be polished is clamped by the rubber pad 84, the rubber pad 84 effectively increases the friction force. And when the atomizing cup to be clamped is prone to being knocked, the rubber pad 84 can minimize the damage to the surface of the workpiece during the processing, thereby protecting the surface of the workpiece.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool processing fixture, comprising a fixed table (1), characterized in that: The bottom of the fixed platform (1) is provided with a connecting platform (2), the bottom of the connecting platform (2) is provided with a bottom support seat (3), the inner wall of the fixed platform (1) is provided with a first rotating bearing (5), the outer wall of the first rotating bearing (5) is provided with a placing platform (6), the outer wall of the placing platform (6) is provided with an adjusting component (7), and both sides of the outer wall of the placing platform (6) are provided with fixing components (8); The fixing assembly (8) comprises a movable plate (81) located on the outer wall of the placement table (6); the outer wall of the movable plate (81) is provided with a plurality of flexible jaws (82); the outer walls of the plurality of flexible jaws (82) are sleeved with a fixing column (85); the outer wall of the fixing column (85) is fixedly connected with a spring (86); the bottom of the spring (86) is fixedly connected with a connecting block (87); the inner wall of the movable plate (81) is provided with an oil tank (88) on a side close to the connecting block (87); the bottom of the oil tank (88) is fixedly connected with a connecting pipe (89); the bottom of the connecting pipe (89) is provided with a collecting box (810); the inner wall of the collecting box (810) is provided with a movable box (811); the bottom of the movable box (811) is fixedly connected with a connecting arc (816).

2. A CNC machine tool processing fixture according to claim 1, characterized in that: The fixing assembly (8) further comprises an oil inlet (812) located on the outer wall of the sliding groove (9), a ball bearing (83) is movably engaged with the inner wall of the flexible jaw (82), and a rubber pad (84) is fixedly connected to the outer wall of the ball bearing (83).

3. The CNC machine tool processing fixture according to claim 1, characterized in that: The inner wall of the connecting arc (816) is provided with a brush (814), the inner wall of the movable box (811) is provided with two steel balls (813), the two steel balls (813) are made of stainless steel, and the outer wall of the brush (814) is provided with an oil outlet (815).

4. The CNC machine tool processing fixture according to claim 1, characterized in that: The upper and lower ends of the collecting box (810) and the movable box (811) are both provided with slots, and the outer wall of the movable box (811) is provided with a spring, the other end of the spring being connected to the collecting box (810).

5. The CNC machine tool processing fixture according to claim 1, characterized in that: The adjustment assembly (7) comprises an adjustment knob (71) located on the outer wall of the placement table (6); the outer wall of the adjustment knob (71) is fixedly connected to a screw rod (72); and the outer wall of the screw rod (72) is sleeved with a moving block (73).

6. The CNC machine tool processing fixture according to claim 2, characterized in that: The position of the oil inlet (812) corresponds to the connection block (87).

7. The CNC machine tool processing fixture according to claim 1, characterized in that: A threaded column (10) is fixedly connected to the outer wall of the placement platform (6), and a second fixing nut (13) is threadedly connected to the outer wall of the threaded column (10).

8. The CNC machine tool processing fixture according to claim 1, characterized in that: A sliding groove (9) is provided on the surface of the placement platform (6), and the sliding groove (9) effectively limits the fixing component (8).

9. The CNC machine tool processing fixture according to claim 1, characterized in that: The inner wall of the fixing platform (1) is provided with a first fixing nut (4), and the inner wall of the bottom supporting seat (3) is provided with a second rotating bearing (12).

10. The CNC machine tool processing fixture according to claim 1, characterized in that: The outer wall of the placement platform (6) is provided with a magnetic attraction plate (11) on a side away from the sliding groove (9), and the outer wall of the magnetic attraction plate (11) is configured as an easily detachable magnet.

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