Clamp for processing magnetic core

Abstract

The application relates to the technical field of magnetic core processing, in particular to a clamp for magnetic core processing, which comprises a mounting base, the upper surface of the mounting base is fixedly connected with a fixing seat and a V-shaped clamping seat, the surface of the V-shaped clamping seat is provided with a clamping assembly, and the right side of the fixing seat is fixedly connected with a pneumatic telescopic rod; the clamping assembly comprises movable clamping blocks, clamping modules are arranged on the left side of each movable clamping block and the right side inner wall of the V-shaped clamping seat, and a limiting groove is formed in the upper surface of each clamping module. The application realizes accurate multidirectional positioning of the magnetic core, provides radial positioning and support for the magnetic core, fundamentally limits the movement and rotation of the magnetic core in the horizontal plane, the limiting abutting blocks in the limiting grooves can abuttingly limit the left and right ends of the magnetic core, the bidirectional clamping of the movable clamping blocks and the V-shaped clamping seat driven by the pneumatic telescopic rod is realized, axial and transverse double fixing of the magnetic core is realized, and the problems of slight rotation and axial movement of the magnetic core caused by the lateral cutting force of a milling cutter are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of magnetic core processing technology, specifically to a fixture for magnetic core processing. Background Technology

[0002] Currently, when performing batch notch milling on multiple toroidal magnetic cores, the industry generally adopts a traditional simple clamping method. The multiple toroidal magnetic cores to be processed are placed directly on a flat machine tool worktable and arranged side by side in a straight line. Then, flat-mouth clamps or simple blocks are used to clamp and fix them laterally on the left and right sides of the magnetic core array. After clamping is completed, the milling machine is started to perform notch milling on the magnetic cores.

[0003] However, traditional clamping methods have the following problems: First, the accumulation of machining debris causes serious interference, which can easily lead to damage to the magnetic core and deviations in machining dimensions, affecting the appearance and performance of the magnetic core; Second, the positioning stability of the magnetic core is poor, and the machining accuracy and consistency are difficult to guarantee. When multiple magnetic cores are machined side by side, the positional offset of a single magnetic core will have a cumulative and transmission effect, causing the entire magnetic core array to be misaligned as a whole or in part during the machining process, ultimately resulting in inconsistent machining dimensions and positions of the notches in each magnetic core. Summary of the Invention

[0004] The purpose of this invention is to provide a jig for machining magnetic cores to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a jig for magnetic core processing, comprising a mounting base, wherein a fixed seat and a U-shaped clamping seat are fixedly connected to the upper surface of the mounting base, a clamping assembly is provided on the surface of the U-shaped clamping seat, and a pneumatic telescopic rod is fixedly connected to the right side of the fixed seat;

[0006] The clamping assembly includes a movable clamping block. A clamping module is installed on the left side of the movable clamping block and the right inner wall of the U-shaped clamping seat. A limiting groove is formed on the upper surface of the clamping module. A strip support is placed between the two limiting grooves. Several magnetic cores are uniformly sleeved on the surface of the strip support.

[0007] A pneumatic cleaning assembly is provided between the U-shaped clamping seat and the fixed seat. The pneumatic cleaning assembly includes a limiting mounting plate fixed to the bottom wall of the fixed seat, and a compressed air cushion is fixedly connected to the left side of the limiting mounting plate.

[0008] Preferably, an exhaust delivery pipe is fixedly embedded on the lower surface of the compressed air cushion, and a one-way exhaust valve is fixedly connected to the air inlet end of the exhaust delivery pipe. An air inlet duct is fixedly embedded on the right side of the limiting mounting plate, and the output end of the air inlet duct extends into the interior of the compressed air cushion. A one-way air inlet valve is fixedly connected to the air inlet end of the air inlet duct.

[0009] Preferably, the inner bottom wall of the U-shaped clamping seat is provided with a rectangular chip collection groove, the position of which corresponds to the clamping assembly, and the chip collection groove is located directly below the movable clamping block.

[0010] Preferably, an air jet box is fixedly connected to the inner wall of the chip collection trough. Several chip cleaning air jet holes are opened on the left side of the air jet box. The end of the exhaust delivery pipe away from the compressed air cushion extends into the interior of the air jet box. An inverted trapezoidal guide block is fixedly connected to the inner wall of the air jet box. The inclined surface of the guide block corresponds to the output end of the exhaust delivery pipe, and the left end of the guide block corresponds to the chip cleaning air jet hole.

[0011] Preferably, two limiting guide rods are fixedly connected to the right side of the movable clamping block. The two limiting guide rods are symmetrically distributed on the surface of the movable clamping block, and the right ends of the two limiting guide rods extend to the right side of the U-shaped clamping seat. The surface of the U-shaped clamping seat has two limiting through holes. The size of the limiting through holes matches the limiting guide rods, and the limiting guide rods are slidably connected to the inner wall of the limiting through holes.

[0012] Preferably, the right ends of the two limiting guide rods are fixedly connected to a linkage push plate, and the left end of the compressed air cushion is fixedly connected to the right side surface of the linkage push plate.

[0013] Preferably, the left end of the telescopic end of the pneumatic telescopic rod is fixedly connected to the right side surface of the movable clamping block, and the side of the U-shaped clamping seat is provided with a sliding through hole that matches the pneumatic telescopic rod. The inner wall of the sliding through hole is provided with a linear bearing, and the pneumatic telescopic rod is slidably connected to the surface of the U-shaped clamping seat through the linear bearing.

[0014] Preferably, two square columnar slots are provided on the right inner wall of the U-shaped clamping seat and the left surface of the movable clamping block. Limiting blocks are inserted and installed on the inner wall of the square columnar slots, and the surface of the limiting blocks is fixedly connected to the side of the clamping module.

[0015] Preferably, the front and rear inner walls of the square columnar slot are provided with corresponding anti-detachment slots, and the front and rear surfaces of the limiting strip are fixedly connected with strip-shaped anti-detachment blocks. The size of the anti-detachment slot matches the strip-shaped anti-detachment block, and the strip-shaped anti-detachment block is inserted into the inner wall of the anti-detachment slot.

[0016] Preferably, the front and rear inner walls of the limiting groove are fixedly connected to limiting blocks, which are used to clamp and limit the left and right ends of the magnetic core. A milling cutter clearance groove is provided at the center axis position of the upper surface of the strip support.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The magnetic core machining fixture achieves precise multi-directional positioning of the magnetic core. The fixture provides radial positioning and support for the magnetic core through the matching and cooperation between the strip support and the inner hole of the magnetic core, which fundamentally restricts the movement and rotation of the magnetic core in the horizontal plane. At the same time, the limiting block in the limiting groove can tighten and limit the left and right ends of the magnetic core. With the pneumatic telescopic rod-driven movable clamping block and the U-shaped clamping seat bidirectional clamping, the magnetic core is fixed in both the axial and lateral directions. This effectively avoids the problem of small rotation and axial movement of the magnetic core caused by the lateral cutting force of the milling cutter, eliminates the accumulation of misalignment when multiple magnetic cores are processed side by side, ensures the accuracy of the magnetic core notch machining size, and improves the consistency of batch processing. In addition, the milling cutter avoidance groove opened on the strip support provides dedicated space for the milling cutter to cut in and pass through, avoids interference between the tool and the support, and ensures that a complete notch can be machined in one go, further improving the machining accuracy and machining efficiency.

[0019] (2) The magnetic core machining fixture links the clamping action with the chip removal action. When the pneumatic telescopic rod drives the movable clamping block to move, the limit guide rod drives the linkage push plate to squeeze and compress the air cushion. The gas in the compressed air cushion enters the air jet box through the exhaust delivery pipe. Under the guidance of the guide block, it is ejected at high speed from the chip removal air jet hole, which can clean the chip collection groove. At the same time, the magnetic core is sleeved on the strip support and is in a suspended state. The chips generated during machining can fall directly into the chip collection groove below and will not accumulate between the magnetic cores or on the contact surface between the magnetic core and the fixture. This structure realizes that clamping and machining and chip removal are carried out simultaneously, preventing the chip from affecting the tool path and causing machining dimension deviation and magnetic core chipping problems.

[0020] (3) The magnetic core processing fixture adopts a modular and detachable clamping structure, which improves the adaptability and maintenance convenience of the fixture. The clamping module is detachably installed on the movable clamping block and the U-shaped clamping seat through the interlocking of the limiting strip, the strip anti-detachment block and the square column slot and the anti-detachment slot. This not only ensures the stability of the clamping module after installation, but also facilitates the quick replacement of the appropriate clamping module and strip support according to the processing requirements of magnetic cores of different specifications, thereby improving the fixture's adaptability to toroidal magnetic cores of different sizes and types. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a side view of the structure of the present invention;

[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0025] Figure 5 This is a schematic diagram of the strip support structure of the present invention;

[0026] Figure 6 This is a top view of the structure of the present invention;

[0027] Figure 7 This is a partial cross-sectional view of the present invention;

[0028] Figure 8 for Figure 7 A magnified structural diagram at point C.

[0029] In the diagram: 1. Mounting base; 2. Fixing seat; 3. U-shaped clamping seat; 4. Clamping assembly; 5. Pneumatic telescopic rod; 6. Pneumatic cleaning assembly;

[0030] 401. Movable clamping block; 402. Clamping module; 403. Limiting groove; 404. Strip support component; 405. Linear bearing; 406. Square column slot; 407. Limiting strip block; 408. Anti-detachment slot; 409. Strip anti-detachment block; 410. Limiting stop block; 411. Milling cutter clearance groove;

[0031] 601. Limiting mounting plate; 602. Compressed air cushion; 603. Exhaust delivery pipe; 604. One-way exhaust valve; 605. Inlet duct; 606. One-way inlet valve; 607. Chip collection trough; 608. Air jet box; 609. Chip cleaning air jet hole; 610. Guide block; 611. Limiting guide rod; 612. Linkage push plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-8 The present invention provides a technical solution: a jig for magnetic core processing, including a mounting base 1, a fixing seat 2 and a U-shaped clamping seat 3 fixedly connected to the upper surface of the mounting base 1, the fixing seat 2 being a hollow square seat, and the U-shaped clamping seat 3 and the fixing seat 2 being arranged opposite each other from left to right.

[0034] The surface of the U-shaped clamping seat 3 is provided with a clamping assembly 4. A pneumatic telescopic rod 5 is fixedly connected to the right outer wall of the fixed seat 2. The telescopic end of the pneumatic telescopic rod 5 extends horizontally to the left, passes through the U-shaped clamping seat 3 and is connected to the clamping assembly 4, providing a stable and controllable driving force for the clamping action. The clamping assembly 4 includes a movable clamping block 401, which is a rectangular metal block and is set inside the U-shaped clamping seat 3. Its right side surface is fixedly connected to the left end of the telescopic end of the pneumatic telescopic rod 5. A sliding through hole matching the pneumatic telescopic rod 5 is opened on the right side wall of the U-shaped clamping seat 3. A linear bearing 405 is fixedly installed on the inner wall of the sliding through hole, and the rod body of the pneumatic telescopic rod 5 is slidably connected to the inner wall of the linear bearing 405.

[0035] It is worth noting that this design makes the extension and retraction of the pneumatic telescopic rod 5 smoother, effectively ensuring the straightness of the movable clamping block 401 during movement and avoiding skewing during clamping. At the same time, the clamping force of the pneumatic telescopic rod 5 can be flexibly adjusted according to the magnetic core material and specifications to prevent excessive clamping that could damage the magnetic core. Compared with traditional manual flat-jaw clamps, this design significantly reduces the intensity of manual operation and improves the efficiency of batch clamping of magnetic cores.

[0036] Two square columnar slots 406 are symmetrically formed on the left side surface of the movable clamping block 401 and the right inner wall of the U-shaped clamping seat 3. The square columnar slots 406 are horizontally formed grooves, and their front and rear inner walls are provided with corresponding anti-detachment slots 408. The anti-detachment slots 408 and the square columnar slots 406 are interconnected. Limiting blocks 407 are inserted into the inner wall of the square columnar slots 406. Strip-shaped anti-detachment blocks 409 are fixedly connected to the front and rear surfaces of the limiting blocks 407. The size of the strip-shaped anti-detachment blocks 409 matches the anti-detachment slots 408, and the strip-shaped anti-detachment blocks 409 are completely inserted into the inner wall of the anti-detachment slots 408. The outer surface of the limiting blocks 407 is fixedly connected to the side of the clamping module 402, realizing the detachable connection between the clamping module 402 and the movable clamping block 401 and the U-shaped clamping seat 3.

[0037] It is worth noting that the modular snap-fit ​​structure not only ensures the structural stability of the clamping module 402 after installation by cooperating with the anti-detachment slot 408 and the strip anti-detachment block 409, preventing the clamping module 402 from falling off during processing, but also allows for quick disassembly and replacement of the appropriate clamping module 402 according to the processing requirements of different specifications of toroidal magnetic cores, thereby improving the adaptability of the fixture.

[0038] Both clamping modules 402 have arc-shaped limiting grooves 403 on their upper surfaces. The two limiting grooves 403 are coaxially arranged, and their curvature matches the outer wall of the strip support 404. The two ends of the strip support 404 are placed inside the two limiting grooves 403, which provide support and horizontal limitation for the strip support 404. Arc-shaped limiting blocks 410 are fixedly connected to the front and rear inner walls of the limiting grooves 403. The limiting blocks 410 are made of elastic and wear-resistant material. After the strip support 404 is placed in the limiting grooves 403, the limiting blocks 410 fit tightly against the outer wall of the strip support 404, providing front-to-back pressure and limitation for the strip support 404.

[0039] The strip support 404 is a slender rod-shaped structure. Its cross-sectional shape is adapted to the inner hole shape of the ring-shaped magnetic core to be processed. The magnetic core can be tightly fitted onto the surface of the strip support 404 in sequence to realize batch clamping of multiple magnetic cores. A milling cutter clearance groove 411 is provided along the axial direction at the central axis position of the upper surface of the strip support 404. The milling cutter clearance groove 411 is a through groove structure, and its opening position corresponds to the position where the magnetic core needs to be machined.

[0040] It is worth noting that the design of the strip support 404 fundamentally solves the technical problem of unstable core positioning in traditional clamping methods. Its fit with the inner hole of the core provides precise radial positioning and support for the core, completely restricting the movement and rotation of the core in the horizontal plane. Together with the limiting block 410 for clamping and limiting the left and right ends of the core, and the bidirectional clamping of the movable clamping block 401 and the U-shaped clamping seat 3, the core is triple fixed in the axial, lateral and radial directions. This effectively resists the lateral cutting force of the milling cutter, avoids the core from slight rotation and axial movement, eliminates the accumulation of misalignment when multiple cores are processed side by side, ensures the accuracy of the core notch processing dimensions, and improves the consistency of batch processing.

[0041] Meanwhile, the milling cutter clearance groove 411 provides dedicated space for the milling cutter to enter and pass through, ensuring that the milling cutter will not interfere with the strip support 404 when machining the notch. A complete notch can be machined in one go without secondary machining, further improving machining accuracy and efficiency. In addition, after the magnetic core is fitted onto the strip support 404, its entire bottom surface is suspended, with a significant gap between it and the table surface of the mounting base 1. This provides a channel for the natural fall of machining debris, preventing debris from accumulating between the magnetic cores or on the contact surface between the magnetic core and the fixture.

[0042] A pneumatic cleaning assembly 6 is provided on the mounting base 1 between the U-shaped clamping seat 3 and the fixed seat 2. The pneumatic cleaning assembly 6 works in conjunction with the clamping assembly 4 to realize simultaneous clamping and cleaning. It includes a limiting mounting plate 601, which is a vertically arranged metal plate. Its lower surface is fixedly connected to the inner bottom wall of the fixed seat 2. A compressed air cushion 602 is fixedly connected to the left side surface of the limiting mounting plate 601. The compressed air cushion 602 is an elastic and wear-resistant rubber air cushion, which is horizontally arranged with its left end facing the U-shaped clamping seat 3.

[0043] On the right side surface of the movable clamping block 401, two limiting guide rods 611 are symmetrically fixedly connected to the upper and lower sides of the pneumatic telescopic rod 5. The limiting guide rods 611 are smooth metal rods, with their right ends extending horizontally to the right and penetrating the right side wall of the U-shaped clamping seat 3. The side wall of the U-shaped clamping seat 3 has limiting through holes that match the limiting guide rods 611. The limiting guide rods 611 are slidably connected to the inner wall of the limiting through holes. The right ends of the two limiting guide rods 611 are jointly fixedly connected to a linkage push plate 612. The linkage push plate 612 is a rectangular metal plate, and its left side surface is fixedly connected to the left end of the compressed air cushion 602. This connection structure allows the movement of the movable clamping block 401 to synchronously drive the linkage push plate 612, realizing the linkage between the clamping assembly 4 and the pneumatic cleaning assembly 6, without the need for an additional chip removal power source.

[0044] It is worth noting that an exhaust delivery pipe 603 is fixedly embedded on the lower surface of the compressed air cushion 602. The air inlet end of the exhaust delivery pipe 603 extends into the interior of the compressed air cushion 602, and a one-way exhaust valve 604 is fixedly connected to the air inlet end. The one-way exhaust valve 604 only allows gas inside the compressed air cushion 602 to flow unidirectionally into the exhaust delivery pipe 603. An air inlet duct 605 is fixedly embedded on the right side wall of the limiting mounting plate 601. The output end of the air inlet duct 605 extends horizontally to the left, passes through the limiting mounting plate 601, and extends into the interior of the compressed air cushion 602. A one-way air inlet valve 606 is fixedly connected to the air inlet end of the air inlet duct 605. The one-way air inlet valve 606 only allows external gas to flow unidirectionally into the interior of the compressed air cushion 602. The cooperation between the one-way exhaust valve 604 and the one-way air inlet valve 606 ensures that the compressed air cushion 602 achieves orderly exhaust and intake during the compression and reset process.

[0045] The inner bottom wall of the U-shaped clamping base 3, directly below the clamping assembly 4, has a rectangular chip collection groove 607. The chip collection groove 607 extends in the left-right direction, and its length covers the entire magnetic core processing area, providing a centralized collection space for processing chips. An air jet box 608 is fixedly connected to the right inner wall of the chip collection groove 607. The air jet box 608 is a hollow square box, and several chip cleaning air jet holes 609 are evenly distributed on its left side wall. The chip cleaning air jet holes 609 are horizontally arranged to the left, facing the magnetic core processing area. The end of the exhaust delivery pipe 603 away from the compressed air cushion 602 extends into the interior of the air jet box 608 to deliver high-pressure gas to the air jet box 608.

[0046] It is worth noting that an inverted trapezoidal guide block 610 is fixedly connected to the inner bottom wall of the jet box 608. The inclined surface of the guide block 610 faces upward and corresponds to the output end of the exhaust delivery pipe 603. The left end of the guide block 610 corresponds to the position of the chip removal jet hole 609. The guide block 610 can guide the high-pressure gas delivered by the exhaust delivery pipe 603, so that the gas is evenly distributed to each chip removal jet hole 609, ensuring that the jet force and range of the chip removal jet hole 609 are uniform. At the same time, the inclined surface design can increase the gas flow rate and achieve high-speed jetting.

[0047] It is worth noting that the pneumatic cleaning component 6 and the clamping component 4 achieve simultaneous chip removal and clamping actions. When the pneumatic telescopic rod 5 drives the movable clamping block 401 to move to the left to clamp the magnetic core, the movable clamping block 401 drives the linkage push plate 612 to move to the left through the limit guide rod 611. The linkage push plate 612 inflates the compressed air pad 602. After processing, the movable clamping block 401 resets, and the linkage push plate 612 squeezes the compressed air pad 602. Under pressure, the gas inside the compressed air pad 602 opens the one-way exhaust valve 604 and enters the jet box 608 through the exhaust delivery pipe 603. Under the guidance of the guide block 610, it is ejected at high speed from several chip removal jet holes 609 to blow and clean the inside of the chip collection groove 607, and to blow the waste chips out from the leftmost end of the chip collection groove 607, thus realizing the centralized collection and cleaning of the chips.

[0048] It is worth noting that this structure completely solves the problem of debris accumulating between, on the surface of, and on the contact surface of the fixture in traditional machining. It prevents debris from being squeezed again by the fixture or tool and scratching the surface of the magnetic core. At the same time, it prevents debris from affecting the normal tool path, effectively avoids problems such as machining dimensional deviation and magnetic core chipping, improves the machining yield, and makes the machining environment cleaner, reducing the workload of manual chip removal.

[0049] Working principle: First, the mounting base 1 is fixedly connected to the milling machine worktable. According to the specifications of the ring magnetic core to be processed, the appropriate clamping module 402 and strip support 404 are selected. The clamping module 402 is fixed by the limiting strip 407, the strip anti-detachment block 409, the movable clamping block 401, the square column groove 406 and the anti-detachment groove 408 on the U-shaped clamping seat 3. Then, multiple ring magnetic cores are tightly fitted onto the surface of the strip support 404 in sequence. Then, the two ends of the strip support 404 with the magnetic cores are placed in the limiting grooves 403 of the two clamping modules 402. The limiting abutment 410 in the limiting groove 403 is in contact with the outer wall of the strip support 404 to achieve the initial limiting of the strip support 404 and the magnetic core. At this time, the bottom surface of the magnetic core is suspended and corresponds to the chip collection groove 607.

[0050] Then, the pneumatic telescopic rod 5 is activated. The telescopic end of the pneumatic telescopic rod 5 extends to the left, driving the movable clamping block 401 to move horizontally to the left along the linear bearing 405. The movable clamping block 401 cooperates with the U-shaped clamping seat 3 to clamp the strip support 404 with the magnetic core in both directions, thereby fixing the magnetic core axially and laterally. At the same time, the movable clamping block 401 drives the limit guide rods 611 on both sides to move to the left. The limit guide rods 611 drive the linkage push plate 612 to stretch and compress the air cushion 602, while inflating the compressed air cushion 602 through the air inlet pipe 605.

[0051] When the magnetic core is precisely clamped and fixed, the milling machine is started, and the milling cutter moves downward and runs along the milling cutter clearance groove 411 of the strip support 404 to perform notch milling on the magnetic core. During the processing, the cutting force of the milling cutter is resisted by the radial support of the strip support 404, the axial limit of the limiting block 410, and the bidirectional clamping of the fixture, which effectively prevents the magnetic core from moving or shifting and ensures the processing accuracy.

[0052] After the notch in the magnetic core is machined, the milling cutter is reset, and then the telescopic end of the pneumatic telescopic rod 5 is retracted to the right, driving the movable clamping block 401 to reset to the right, releasing the clamping of the strip support 404. During the reset of the movable clamping block 401, the limiting guide rod 611 drives the linkage push plate 612 to move to the right and squeeze the compressed air cushion 602. The gas inside the compressed air cushion 602 enters the jet box 608 through the one-way exhaust valve 604 and the exhaust delivery pipe 603. Under the guidance of the guide block 610, it is sprayed laterally into the chip collection groove 607 from the chip cleaning jet hole 609, completing the chip cleaning work of the chip collection groove 607. Finally, the strip support 404 is manually removed from the limiting groove 403, and the machined magnetic core is unloaded, completing a complete machining process.

Claims

1. A jig for processing a magnetic core, comprising a mounting base (1), characterized in that: The upper surface of the mounting base (1) is fixedly connected to a fixed seat (2) and a U-shaped clamping seat (3). The surface of the U-shaped clamping seat (3) is provided with a clamping component (4). The right side of the fixed seat (2) is fixedly connected to a pneumatic telescopic rod (5). The clamping assembly (4) includes a movable clamping block (401). A clamping module (402) is installed on the left side of the movable clamping block (401) and the right inner wall of the U-shaped clamping seat (3). A limiting groove (403) is opened on the upper surface of the clamping module (402). A strip support (404) is placed between the two limiting grooves (403). A number of magnetic cores are uniformly sleeved on the surface of the strip support (404). A pneumatic cleaning assembly (6) is provided between the U-shaped clamping seat (3) and the fixed seat (2). The pneumatic cleaning assembly (6) includes a limiting mounting plate (601) fixed to the bottom wall of the fixed seat (2). A compressed air cushion (602) is fixedly connected to the left side of the limiting mounting plate (601).

2. The jig for machining magnetic cores according to claim 1, characterized in that: An exhaust delivery pipe (603) is fixedly embedded on the lower surface of the compressed air cushion (602). A one-way exhaust valve (604) is fixedly connected to the air inlet end of the exhaust delivery pipe (603). An air inlet duct (605) is fixedly embedded on the right side of the limiting mounting plate (601). The output end of the air inlet duct (605) extends into the interior of the compressed air cushion (602), and a one-way air inlet valve (606) is fixedly connected to the air inlet end of the air inlet duct (605).

3. A jig for machining magnetic cores according to claim 2, characterized in that: The inner bottom wall of the U-shaped clamping seat (3) is provided with a rectangular chip collection groove (607). The chip collection groove (607) is located opposite to the clamping assembly (4) and is located directly below the movable clamping block (401).

4. A jig for machining magnetic cores according to claim 3, characterized in that: The inner wall of the chip collection trough (607) is fixedly connected to an air jet box (608). Several chip cleaning air jet holes (609) are opened on the left side of the air jet box (608). The end of the exhaust delivery pipe (603) away from the compressed air cushion (602) extends into the interior of the air jet box (608). The inner wall of the air jet box (608) is fixedly connected to a guide block (610) in the shape of an inverted trapezoid. The inclined surface of the guide block (610) corresponds to the output end of the exhaust delivery pipe (603), and the left end of the guide block (610) corresponds to the chip cleaning air jet hole (609).

5. A jig for machining magnetic cores according to claim 4, characterized in that: Two limiting guide rods (611) are fixedly connected to the right side of the movable clamping block (401). The two limiting guide rods (611) are symmetrically distributed on the surface of the movable clamping block (401), and the right ends of the two limiting guide rods (611) extend to the right side of the U-shaped clamping seat (3). The surface of the U-shaped clamping seat (3) has two limiting through holes. The size of the limiting through holes matches the limiting guide rods (611). The limiting guide rods (611) are slidably connected to the inner wall of the limiting through holes.

6. A jig for machining magnetic cores according to claim 5, characterized in that: The right ends of the two limiting guide rods (611) are fixedly connected to a linkage push plate (612), and the left end of the compressed air cushion (602) is fixedly connected to the right side surface of the linkage push plate (612).

7. A jig for machining magnetic cores according to claim 6, characterized in that: The left end of the telescopic end of the pneumatic telescopic rod (5) is fixedly connected to the right side surface of the movable clamping block (401). The side of the U-shaped clamping seat (3) is provided with a sliding through hole that matches the pneumatic telescopic rod (5). A linear bearing (405) is provided on the inner wall of the sliding through hole. The pneumatic telescopic rod (5) is slidably connected to the surface of the U-shaped clamping seat (3) through the linear bearing (405).

8. A jig for machining magnetic cores according to claim 1, characterized in that: The right inner wall of the U-shaped clamping seat (3) and the left surface of the movable clamping block (401) are provided with two square column slots (406). A limiting strip (407) is inserted and installed on the inner wall of the square column slot (406). The surface of the limiting strip (407) is fixedly connected to the side of the clamping module (402).

9. A jig for machining magnetic cores according to claim 8, characterized in that: The front and rear inner walls of the square columnar slot (406) are provided with corresponding anti-detachment slots (408), and the front and rear surfaces of the limiting strip (407) are fixedly connected with strip-shaped anti-detachment blocks (409). The size of the anti-detachment slot (408) matches the strip-shaped anti-detachment block (409), and the strip-shaped anti-detachment block (409) is inserted into the inner wall of the anti-detachment slot (408).

10. A jig for machining magnetic cores according to claim 1, characterized in that: The front and rear inner walls of the limiting groove (403) are fixedly connected to limiting blocks (410), which are used to press and limit the left and right ends of the magnetic core. A milling cutter clearance groove (411) is provided on the upper surface of the strip support (404) at the center axis position.

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