Variable-diameter cylindrical magnetic core self-positioning clamping tool

Abstract

The utility model discloses a cylindrical magnetic core self-positioning clamping tool with a variable diameter. Main two-way threaded rods are rotationally arranged on the front side and the rear side of the interior of the positioning platform through bearings; clamping mechanisms are arranged on the front and rear sides of the top surfaces of the reducing transverse plates on the left and right sides; wherein a driving gear is rotationally arranged at the center position of the interior of the driving frame through a bearing, and driven gears are rotationally arranged on the front side and the rear side of the interior of the driving frame through bearings; and auxiliary two-way threaded rods are rotationally arranged in the reducing transverse plates on the left side and the right side through bearings correspondingly. According to the diameter-variable cylindrical magnetic core self-positioning clamping tool, through the diameter-variable transverse plate and the positioning arc plate which can adjust the left-right range and the front-back range on the positioning platform, matching is conducted on positioning of magnetic cores of different specifications, and the magnetic cores are limited through the positioning plate and the abutting plate which are symmetrically distributed and can be turned over; therefore, the stability of the magnetic core in the positioning and subsequent processing processes is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core processing, in particular to a self-positioning clamping tool for a cylindrical magnetic core with a variable diameter. Background Art

[0002] The magnetic core refers to a sintered magnetic metal oxide composed of a mixture of various iron oxides, which is usually processed into a cylindrical structure. When processing the cylindrical magnetic core, a specific clamping tool is required to prevent the cylindrical magnetic core from shifting and preventing damage caused by misalignment that affects normal use;

[0003] Publication No. CN211565151U discloses a cylindrical workpiece clamping tool. By setting a clamping device in the device, the cylindrical workpiece can be clamped, which is convenient for processing the cylindrical workpiece. The entire clamping device has high flexibility. By setting a fixing device, the workpiece will not loosen during processing. The pressing block of the fixing device is set in a V-shaped structure to adapt to cylindrical workpieces of different sizes. The entire device has high flexibility and strong adaptability.

[0004] However, the above-mentioned clamping tooling for processing cylindrical workpieces still has the following problems during actual use: although the cylindrical workpiece can be clamped by two V-shaped clamping mechanisms, this type of clamping method allows the workpiece to be placed only horizontally, and the processing of the magnetic core requires constant adjustment of the direction, which makes it difficult to apply to the processing of the magnetic core. At the same time, the two V-shaped clamping mechanisms block too large an area on the workpiece, which affects the processing of the workpiece and has major disadvantages.

[0005] Therefore, we propose a self-positioning clamping fixture for a cylindrical magnetic core with a variable diameter to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a self-positioning clamping tool for a cylindrical magnetic core with a variable diameter, so as to solve the problem raised in the above-mentioned background technology that although the cylindrical workpiece can be clamped by two V-shaped clamping mechanisms, this type of clamping method allows the workpiece to be placed only horizontally, and the processing of the magnetic core requires continuous adjustment of the direction, which makes it difficult to apply the processing of the magnetic core. At the same time, the shielding area of ​​the workpiece caused by the two V-shaped clamping mechanisms is too large, which affects the processing of the workpiece, and there are major drawbacks.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylindrical magnetic core self-positioning clamping tool with variable diameter, comprising a positioning platform, and a driving frame fixedly installed in the middle of the left end of the positioning platform;

[0008] The front and rear sides of the positioning platform are both provided with main bidirectional threaded rods rotatably through bearings, and the left and right outer walls of the main bidirectional threaded rods on the front and rear sides are both threadedly connected to the variable diameter horizontal plate;

[0009] It also includes: the top surfaces of the variable diameter horizontal plates on the left and right sides are both provided with clamping mechanisms on the front and rear sides, and the symmetrically arranged clamping mechanisms include guide sliders and clamping arc plates;

[0010] A driving gear is rotatably arranged at the center of the driving frame through a bearing, and driven gears are rotatably arranged at both the front and rear sides of the driving frame through bearings;

[0011] Among them, the inside of the left and right variable diameter horizontal plates are both provided with a pair of bidirectional threaded rods rotatably through bearings, and the front and rear outer wall threads of the left and right pair of bidirectional threaded rods penetrate the bottom end of the guide slider included in the clamping mechanism.

[0012] Preferably, the driven gears on the front and rear sides inside the driving frame are meshed and connected to the outer wall of the driving gear, and the rotating shafts of the driven gears on the front and rear sides are meshed and connected to the left ends of the main bidirectional threaded rods on the front and rear sides inside the positioning platform through a sprocket mechanism, and an adjustment shaft is rotatably arranged in front of the top surface of the positioning platform through a bearing.

[0013] Preferably, the left and right outer walls of the main bidirectional threaded rods on the front and rear sides inside the positioning platform are threadedly connected to the bottom end of the variable diameter cross plate, and the front ends of the left and right variable diameter cross plates slide through the outer wall of the adjusting shaft, and the maximum sliding length of the left and right variable diameter cross plates is less than 1 / 2 of the length of the adjusting shaft.

[0014] Preferably, the front end of the symmetrically arranged secondary bidirectional threaded rod is meshedly connected to the outer wall of the adjusting shaft inside the variable diameter cross plate through a bevel gear set, and the front and rear sides of the adjusting shaft are engaged with the bevel gear set on its outer wall through an inwardly recessed groove, and the bevel gear set can slide on the outer wall of the adjusting shaft, and the rotation of the adjusting shaft can drive the bevel gear set and the meshed secondary bidirectional threaded rod to rotate synchronously.

[0015] Preferably, the clamping mechanism includes a flip positioning plate, and the flip positioning plates are arranged in groups of two at the outer end of the clamping arc plate through a torsion spring, and the clamping arc plate is rotatably installed on the top of the guide slider through a bearing, and the guide slider is threadedly connected to the outer wall of the secondary bidirectional threaded rod inside the variable diameter cross plate in a front-to-rear symmetrical manner.

[0016] Preferably, the inner ends of the symmetrically arranged clamping arc plates are slidably provided with pressure resistance plates, and the pressure resistance plates and the clamping arc plates are connected to each other via a reset spring, and the left and right ends of the pressure resistance plates are fixedly connected to the inner ends of the traction steel cables, and the outer ends of the symmetrically arranged traction steel cables are respectively fixedly connected to the outer walls of the flip positioning plates at the outer ends of the clamping arc plates.

[0017] Preferably, a core placement disk is fixedly provided at the center position of the top surface of the positioning platform, and guide grooves are opened on the front and rear sides of the core placement disk in a left-right symmetrical manner, and the core placement disk will not affect the sliding and operation of the variable diameter cross plates on the left and right sides through the guide grooves symmetrically opened inside.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the variable diameter cylindrical magnetic core self-positioning clamping tooling is adapted for the positioning of magnetic cores of different specifications through the variable diameter horizontal plate and the positioning arc plate that can adjust the left and right range and the front and back range on the positioning platform, and the symmetrically distributed flippable positioning plate and the contact plate are used to limit the magnetic core to ensure the stability of the magnetic core during positioning and subsequent processing. The specific contents are as follows:

[0019] 1. The driven gears on the front and rear sides of the frame drive the main bidirectional threaded rod connected to the sprocket mechanism to rotate inside the positioning platform, and then the main bidirectional threaded rod drives the variable diameter cross plates connected to the threads on the outer walls on the left and right sides to move left and right in opposite directions, so as to make the process of adjusting the positioning range more convenient and efficient;

[0020] 2. The adjusting shaft on the top surface of the artificially rotating positioning platform drives the secondary bidirectional threaded rod inside the variable diameter horizontal plate to rotate through the bevel gear set, and then the secondary bidirectional threaded rod drives the guide sliders and the clamping arc plates connected by threads on the front and rear sides to slide in opposite directions, so as to adapt to the positioning of magnetic cores with different diameters;

[0021] 3. The magnetic core is placed on the magnetic core placement plate, and the pressure contact plate at the inner end of the clamping arc plate squeezes the magnetic core and causes it to slide, thereby driving the flip positioning plate connected by the traction cable to flip inward synchronously, so that the symmetrically arranged flip positioning plates are all in contact with the outer wall of the magnetic core to ensure the stability of the magnetic core during positioning and subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the magnetic core placement disk of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the drive frame of the utility model;

[0025] Figure 4 This is a schematic diagram of the drive shaft installation structure of the utility model;

[0026] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the arc plate clamping of the utility model;

[0028] Figure 7 It is a schematic diagram of the structure in which the driving shaft of the utility model is connected with the auxiliary bidirectional threaded rod.

[0029] In the figure: 1. positioning platform; 2. driving frame; 3. main bidirectional threaded rod; 4. variable diameter cross plate; 5. guide slide block; 6. clamping arc plate; 7. driving gear; 8. driven gear; 9. secondary bidirectional threaded rod; 10. sprocket mechanism; 11. adjusting shaft; 12. bevel gear set; 13. flip positioning plate; 14. pressure resistance plate; 15. reset spring; 16. traction cable; 17. magnetic core placement plate; 18. guide slide groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 7 , the utility model provides the following technical solutions:

[0032] Embodiment 1: In order to solve the problem that the existing positioning tooling is too cumbersome in the adjustment process, this embodiment adopts the following technical solution, by driving the driven gears 8 on the front and rear sides of the frame 2 to drive the main bidirectional threaded rod 3 connected to the sprocket mechanism 10 to rotate inside the positioning platform 1, and then the main bidirectional threaded rod 3 drives the variable diameter cross plate 4 connected to the outer wall threads on the left and right sides to move left and right in the opposite direction, so as to be more convenient and efficient in the process of adjusting the positioning range;

[0033] A self-positioning clamping tool for a cylindrical magnetic core with a variable diameter comprises a positioning platform 1 and a driving frame 2 fixedly mounted at the middle of the left end of the positioning platform 1; main bidirectional threaded rods 3 are rotatably arranged on both the front and rear sides of the positioning platform 1 through bearings, and both the left and right outer walls of the main bidirectional threaded rods 3 on the front and rear sides are threadedly penetrated and connected to a variable diameter horizontal plate 4;

[0034] Among them, a driving gear 7 is rotatably provided at the inner center position of the driving frame 2 through a bearing, and driven gears 8 are rotatably provided at both the front and rear sides of the driving frame 2 through bearings; the driven gears 8 at the front and rear sides of the driving frame 2 are meshedly connected to the outer wall of the driving gear 7, and the rotating shafts of the driven gears 8 at the front and rear sides are meshedly connected to the left ends of the main bidirectional threaded rods 3 at the front and rear sides of the positioning platform 1 through a sprocket mechanism 10;

[0035] like Figure 1-Figure 2 , Figure 4 As shown, when it is necessary to adjust the distance between the variable diameter horizontal plates 4 on the left and right sides of the top surface of the positioning platform 1, the driving gear 7 arranged inside the driving frame 2 is manually rotated, so that the rotating driving gear 7 drives the driven gears 8 meshingly connected on the front and rear sides to rotate synchronously, and the driven gears 8 on the front and rear sides drive the main bidirectional threaded rods 3 on the front and rear sides of the positioning platform 1 to rotate in the same direction through the sprocket mechanism 10 at the rotating shaft, and then the variable diameter horizontal plates 4 threadedly connected to the left and right outer walls of the main bidirectional threaded rods 3 on the front and rear sides are driven to move in opposite directions, so that the clamping work for magnetic cores of different diameters can be quickly and easily adjusted.

[0036] Embodiment 2: In order to solve the problem that the existing positioning tooling is too cumbersome in the adjustment process, this embodiment adopts the following technical solution. After determining the distance between the variable diameter horizontal plates 4 on the left and right sides, the adjustment shaft 11 on the top surface of the positioning platform 1 is manually rotated to drive the secondary bidirectional threaded rod 9 inside the variable diameter horizontal plate 4 to rotate through the bevel gear set 12, and then the secondary bidirectional threaded rod 9 drives the guide slider 5 and the clamping arc plate 6 connected by threads on the front and rear sides to slide in opposite directions, so as to adapt to the positioning of magnetic cores with different diameters;

[0037] Among them, the inside of the left and right variable diameter horizontal plates 4 are both provided with a pair of bidirectional threaded rods 9 rotatably arranged through bearings, and the front and rear outer wall threads of the left and right pair of bidirectional threaded rods 9 penetrate the bottom end of the guide slider 5 included in the clamping mechanism;

[0038] An adjusting shaft 11 is rotatably arranged in front of the top surface of the positioning platform 1 through a bearing; the left and right outer walls of the main bidirectional threaded rods 3 on the front and rear sides inside the positioning platform 1 are threadedly connected to the bottom end of the variable diameter cross plate 4, and the front ends of the left and right variable diameter cross plates 4 are slidably penetrated through the outer wall of the adjusting shaft 11, and the maximum sliding length of the left and right variable diameter cross plates 4 is less than 1 / 2 of the length of the adjusting shaft 11.

[0039] The front end of the symmetrically arranged secondary bidirectional threaded rod 9 is meshed and connected to the outer wall of the adjusting shaft 11 inside the variable diameter horizontal plate 4 through a bevel gear set 12, and the front and rear sides of the adjusting shaft 11 are mutually engaged with the bevel gear set 12 on its outer wall through an inwardly recessed slide groove, and the bevel gear set 12 can slide on the outer wall of the adjusting shaft 11, and the rotation of the adjusting shaft 11 can drive the bevel gear set 12 and the meshed secondary bidirectional threaded rod 9 to rotate synchronously;

[0040] like Figure 2 , Figure 6-Figure 7 As shown, during the sliding process of the variable diameter cross plates 4 on the left and right sides, they drive the internal bevel gear set 12 to slide synchronously. Since the bevel gear set 12 and the adjusting shaft 11 are engaged through the concave and convex groove block structure, it is ensured that after the adjusting shaft 11 is manually rotated, the engaged bevel gear set 12 can drive the secondary bidirectional threaded rod 9 meshingly connected inside the variable diameter cross plate 4 to rotate synchronously, and then the guide slider 5 and the clamping arc plate 6 threadedly connected to the outer walls of the front and rear sides of the secondary bidirectional threaded rod 9 are driven to slide in relative directions, so that they can adapt to magnetic cores of different diameters for clamping and positioning.

[0041] Embodiment 3: In order to solve the problem that the existing clamping mechanism cannot effectively position the magnetic core, the present embodiment adopts the following technical solution, wherein the magnetic core is placed by the magnetic core placement disk 17, and the pressure contact plate 14 at the inner end of the clamping arc plate 6 squeezes the magnetic core and then slides, thereby driving the flip positioning plate 13 connected by the traction cable 16 to flip inward synchronously, so that the symmetrically arranged flip positioning plates 13 are all in contact with the outer wall of the magnetic core, so as to ensure the stability of the magnetic core during positioning and subsequent processing;

[0042] The top surfaces of the variable diameter horizontal plates 4 on the left and right sides are provided with clamping mechanisms on both the front and rear sides, and the symmetrically arranged clamping mechanisms include a guide slider 5 and a clamping arc plate 6; the clamping mechanism includes a flip positioning plate 13, and the flip positioning plates 13 are rotatably arranged on the outer ends of the clamping arc plates 6 in a group of two by means of a torsion spring, and the clamping arc plates 6 are rotatably installed on the top ends of the guide sliders 5 by means of bearings, and the guide sliders 5 are threadedly connected to the outer wall of the secondary bidirectional threaded rod 9 inside the variable diameter horizontal plate 4 in a front-to-back symmetrical manner;

[0043] The inner ends of the symmetrically arranged clamping arc plates 6 are slidably provided with pressure contact plates 14, and the pressure contact plates 14 and the clamping arc plates 6 are connected to each other through a return spring 15, and the left and right ends of the pressure contact plates 14 are fixedly connected to the inner ends of the traction cables 16, and the outer ends of the symmetrically arranged traction cables 16 are respectively fixedly connected to the outer walls of the flip positioning plates 13 at the outer ends of the clamping arc plates 6;

[0044] A magnetic core placement plate 17 is fixedly arranged at the center of the top surface of the positioning platform 1, and guide grooves 18 are opened in a left-right symmetrical manner on the front and rear sides of the magnetic core placement plate 17, and the magnetic core placement plate 17 will not affect the sliding and operation of the variable diameter horizontal plates 4 on the left and right sides through the guide grooves 18 symmetrically opened inside;

[0045] like Figure 1 , Figure 4-Figure 5 As shown, the magnetic core placement plate 17 arranged at the center position of the top surface of the positioning platform 1 is used to place the magnetic core, and then the clamping arc plate 6 which is symmetrical in the front-to-back direction is squeezed to the outer wall of the magnetic core through the pressure contact plate 14 which is slidably connected at the inner end, and the pressure contact plate 14 slides backward during the continuous squeezing process, and the traction steel cable 16 at the outer end of the pressure contact plate 14 is no longer pulled and tensioned, so that the outer end of the traction steel cable 16 is rotated on the flip positioning plates 13 on both sides of the clamping arc plate 6 through the torsion spring and is no longer pulled, and the flip positioning plates 13 on both sides are driven to flip inward synchronously through the resetting of the torsion spring, and then fit to the outer wall of the magnetic core for clamping and positioning, so as to ensure the stability of the magnetic core during positioning and subsequent processing.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylindrical magnetic core self-positioning clamping tool with a variable diameter, comprising a positioning platform (1), and a driving frame (2) fixedly mounted on the middle of the left end of the positioning platform (1); The front and rear sides of the positioning platform (1) are both provided with main bidirectional threaded rods (3) rotatably arranged via bearings, and the left and right outer walls of the front and rear main bidirectional threaded rods (3) are both threadedly penetrated and connected to the variable diameter horizontal plate (4); It is characterized in that Also includes: The top surfaces of the variable diameter transverse plates (4) on the left and right sides are both provided with clamping mechanisms on the front and rear sides, and the symmetrically arranged clamping mechanisms include a guide slider (5) and a clamping arc plate (6); A driving gear (7) is rotatably arranged at the center of the driving frame (2) via a bearing, and driven gears (8) are rotatably arranged at both the front and rear sides of the driving frame (2) via bearings. Wherein, a pair of bidirectional threaded rods (9) are rotatably arranged inside the left and right variable diameter horizontal plates (4) via bearings, and the threads on the front and rear outer walls of the left and right bidirectional threaded rods (9) penetrate the bottom end of the guide slider (5) included in the clamping mechanism.

2. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 1, characterized in that: The driven gears (8) on the front and rear sides of the driving frame (2) are meshedly connected to the outer wall of the driving gear (7), and the rotating shafts of the driven gears (8) on the front and rear sides are meshedly connected to the left ends of the main bidirectional threaded rods (3) on the front and rear sides of the positioning platform (1) through a sprocket mechanism (10), and an adjusting rotating shaft (11) is rotatably arranged in front of the top surface of the positioning platform (1) through a bearing.

3. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 1, characterized in that: The left and right outer walls of the main bidirectional threaded rods (3) on the front and rear sides inside the positioning platform (1) are both threadedly connected to the bottom end of the variable diameter horizontal plate (4), and the front ends of the left and right variable diameter horizontal plates (4) are slidably penetrated through the outer wall of the adjustment shaft (11), and the maximum sliding length of the left and right variable diameter horizontal plates (4) is less than 1 / 2 of the length of the adjustment shaft (11).

4. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 1, characterized in that: The front end of the symmetrically arranged pair of bidirectional threaded rods (9) is meshedly connected to the outer wall of the adjusting shaft (11) inside the variable diameter horizontal plate (4) through a bevel gear set (12), and the front and rear sides of the adjusting shaft (11) are mutually engaged with the bevel gear set (12) on its outer wall through an inwardly recessed slide groove, and the bevel gear set (12) can slide on the outer wall of the adjusting shaft (11), and the rotation of the adjusting shaft (11) can drive the bevel gear set (12) and the meshed pair of bidirectional threaded rods (9) to rotate synchronously.

5. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 1, characterized in that: The clamping mechanism comprises a flip positioning plate (13), and the flip positioning plates (13) are arranged in groups of two at the outer end of the clamping arc plate (6) by means of a torsion spring, and the clamping arc plate (6) is rotatably mounted on the top of the guide slider (5) by means of a bearing, and the guide slider (5) is threadedly connected to the outer wall of the secondary bidirectional threaded rod (9) inside the variable diameter cross plate (4) in a front-rear symmetrical manner.

6. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 5, characterized in that: The inner ends of the symmetrically arranged clamping arc plates (6) are slidably provided with pressure contact plates (14), and the pressure contact plates (14) and the clamping arc plates (6) are connected to each other via a return spring (15), and the left and right ends of the pressure contact plates (14) are fixedly connected to the inner ends of the traction steel cables (16), and the outer ends of the symmetrically arranged traction steel cables (16) are respectively fixedly connected to the outer walls of the flip positioning plates (13) at the outer ends of the clamping arc plates (6).

7. The self-positioning clamping tool for a cylindrical magnetic core with a variable diameter according to claim 1, characterized in that: A magnetic core placement disk (17) is fixedly arranged at the center of the top surface of the positioning platform (1), and guide grooves (18) are provided on the front and rear sides of the magnetic core placement disk (17) in a left-right symmetrical manner, and the magnetic core placement disk (17) will not affect the sliding and operation of the variable diameter horizontal plates (4) on the left and right sides through the guide grooves (18) provided symmetrically inside.

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