Electrostatic ring skeleton chute processing device

Abstract

This utility model belongs to the field of insulating product manufacturing technology, and discloses a device for processing inclined grooves in an electrostatic ring skeleton. It includes a rectangular guide seat with a rectangular guide groove at the center of the upper part of the guide seat. A strip-shaped guide milling cutter groove is located in the center of the guide groove. The upper part of the guide groove is slidably connected to a milling machine via a guide slide plate and a guide wheel. At each of the four corners of the guide seat, there are skeleton height adjusting columns that pass longitudinally through the guide seat and are screwed to it. Each skeleton height adjusting column has a skeleton width adjusting screw that passes laterally through the column at its lower end. An inclined plate is located below the guide seat, with one end hinged to the bottom of the guide seat and the other end connected to the guide seat via an inclination adjustment device. This utility model has a simple structure, reasonable design, convenient operation, and high processing accuracy, which can improve processing efficiency and reduce scrap rate.

Description

Technical Field

[0001] This utility model belongs to the field of insulating product manufacturing technology, specifically relating to a device for processing inclined grooves in an electrostatic ring skeleton. Background Technology

[0002] Electric field concentration (such as the tip effect) exists at the lead connection of the electrostatic ring in high-voltage transformers, which can easily lead to partial discharge or insulation breakdown. To eliminate or weaken the impact of electric field concentration, designers disperse the electric field by using a large radius of curvature structure when designing the electrostatic ring, and design and machine skewed grooves at the lead exit positions of the electrostatic ring skeleton (e.g., the groove depth gradually transitions from 8mm to 0mm) to meet the requirements of electric field optimization design. Previously, to ensure accuracy, the skewed grooves of the electrostatic ring skeleton could only be machined using machine tools or manually using a hand-held electric milling cutter.

[0003] Both machine tool and manual machining of inclined grooves have certain drawbacks: due to the special structure and material of the electrostatic ring skeleton (notched circular laminated end ring or notched large and small rolled end ring), machine tool machining requires manual completion of installation, positioning, tool setting, and material handling, which is quite cumbersome; when manually machining such inclined grooves with a hand-held electric milling cutter, the accuracy depends entirely on manual experience, resulting in an extremely high scrap rate (e.g., depth control error > 0.5mm), which cannot meet customer requirements. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an electrostatic ring skeleton inclined groove processing device, which overcomes the defects of the prior art, has a simple structure, reasonable design, convenient operation, high processing accuracy, and can improve processing efficiency and reduce scrap rate.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An electrostatic ring skeleton inclined groove processing device includes a rectangular guide seat, a rectangular guide groove in the center of the upper part of the guide seat, a strip milling cutter groove in the center of the guide groove, and the upper part of the guide groove is slidably connected to the milling cutter machine through a guide slide plate and a guide wheel; skeleton height adjustment columns are respectively provided at the four corners of the guide seat, which pass through the guide seat longitudinally and are screwed to the guide seat, and each skeleton height adjustment column has a skeleton width adjustment screw that passes through the skeleton height adjustment column laterally at its lower end; an inclined plate is provided below the guide seat, one end of the inclined plate is hinged to the bottom of the guide seat, and the other end is connected to the guide seat through an inclined adjustment device.

[0007] Preferably, the milling machine includes a main milling machine body, which is fixedly connected to a guard plate located at the lower part of the main milling machine body via a guard hub surrounding its lower part. The guard plate is adapted to a guide slide plate, which is adapted to a guide groove. Four guide wheels are fixedly connected to the guide slide plate at the four bottom corners of the guard plate by screws. The guide wheels are rolledly connected to the side wall of the guide groove (the two work together to drive the milling cutter guard plate to slide in the guide groove, thereby driving the milling machine to work in the guide groove). Milling cutter through holes are provided in the center of the guide slide plate and the center of the bottom of the guard plate. The guard hub is fitted onto the body of the main milling machine body and has an opening on the side. The upper part of the opening of the guard hub has an outward bend, and the bend has a milling depth adjustment device and a fixing screw that penetrate the bend. The milling depth adjustment device includes a rotating screw and a ratchet. The rotating screw passes through the bend and is fixedly connected to the ratchet located in the middle of the opening. The other end of the ratchet is screwed to a fixing screw that passes through the bend on the other side. The side of the main milling machine body has ratchet tooth grooves corresponding to the ratchet. The milling machine host is raised and lowered by rotating a screw to control the relative movement of the ratchet and ratchet teeth, thereby adjusting the depth of cut of the milling cutter.

[0008] Preferably, the main unit of the milling machine is an M3700 trimming machine, manufactured by Makita (China) Co., Ltd.

[0009] Preferably, the frame height adjusting columns are all screwed to the guide seat.

[0010] Preferably, the frame width adjustment columns are all screwed together with the frame height adjustment screws.

[0011] Preferably, the inclined plate has a sloping plate milling cutter groove in the center, the position and width of which are the same as the guide milling cutter groove, and the length is greater than the length of the guide milling cutter groove. The width of the inclined plate is the same as the guide groove, and the length is between the length of the guide groove and the length of the guide seat.

[0012] Preferably, the inclination adjustment device includes an arc-shaped adjusting column passing through the guide seat and an adjusting screw located on one side of the end of the guide seat. The inclination of the inclined plate is adjusted by adjusting the extension of the arc-shaped adjusting column, and after adjustment, it is fixed by the adjusting screw at the end. The inclination of the inclined plate is the same as the inclination of the product.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] This invention adjusts and fixes the electrostatic ring skeleton to be processed using a skeleton height adjustment column and a skeleton width adjustment screw; marks the slope of the inclined groove of the electrostatic ring skeleton to be processed using an inclined plate and an inclined slope adjustment device; adjusts the cutting depth of the milling cutter by controlling the relative movement of the ratchet and ratchet tooth groove by rotating the screw; and enables the milling cutter to slide in the guide groove through the guide seat, guide slide plate, guide wheel and milling cutter machine; thereby realizing the processing of the inclined groove.

[0015] By implementing the above settings, compared with the existing manual hand-held electric milling cutter processing technology, the frequency of manual positioning is reduced, processing efficiency and accuracy are improved, scrap rate is reduced, production cycle is shortened, and production costs are reduced.

[0016] In summary, this utility model has a simple structure, reasonable design, convenient operation, and high processing precision, which can improve processing efficiency and reduce scrap rate. Attached Figure Description

[0017] Figure 1 This is a front structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a side view of an embodiment of the present invention;

[0019] Figure 3 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 4 This is a top view of the guide seat according to an embodiment of the present invention;

[0021] In the diagram, 1. Guide seat; 2. Guide groove; 3. Guide slide plate; 4. Guide wheel; 5. Milling cutter; 51. Milling cutter main unit; 52. Protective hub; 53. Protective plate; 54. Bending; 55. Milling depth adjustment device; 56. Fixing screw; 6. Frame height adjustment column; 7. Frame width adjustment screw; 8. Inclined plate; 9. Inclined adjustment device; 91. Arc-shaped adjustment column; 92. Adjusting screw. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1:

[0024] like Figures 1 to 4 As shown, an electrostatic ring skeleton inclined groove processing device includes a rectangular guide seat 1, a rectangular guide groove 2 is provided in the center of the upper part of the guide seat 1, and a strip-shaped guide milling cutter groove (not shown) is provided in the center of the guide groove 2. The upper part of the guide groove 2 is slidably connected to the milling machine 5 through the guide slide plate 3 and the guide wheel 4. The four corners of the guide seat 1 are respectively provided with skeleton height adjustment columns 6 that pass through the guide seat 1 longitudinally and are screwed to the guide seat 1. The lower end of each skeleton height adjustment column 6 is provided with a skeleton width adjustment screw 7 that passes through the skeleton height adjustment column 6 laterally. An inclined plate 8 is provided under the guide seat 1. One end of the inclined plate 8 is hinged to the bottom of the guide seat 1, and the other end is connected to the guide seat 1 through the inclined adjustment device 9.

[0025] The milling machine 5 includes a main milling machine 51. The main milling machine 51 is fixedly connected to a guard plate 53 located at the lower part of the main milling machine 51 via a guard hub 52 surrounding its lower part. The guard plate 53 is adapted to a guide slide plate 3, and the guide slide plate 3 is adapted to a guide groove 2. Four guide wheels 4 are fixedly connected to the guide slide plate 3 at the four bottom corners of the guard plate 53 by screws. The guide wheels 4 are in rolling connection with the side wall of the guide groove 2. A milling cutter through hole (not shown) is provided in the center of the guide slide plate 3 and the center of the bottom of the guard plate 53. The guard hub 52 is fitted onto the main milling machine 51. On the body of the machine 51, the side of the guard hub 52 has an opening, and the upper part of the opening of the guard hub 52 has an outward bend 54. The bend 54 has a milling depth adjustment device 55 and a fixing screw 56 that penetrate the bend 54. The milling depth adjustment device 55 includes a rotating screw (not shown) and a ratchet (not shown). The rotating screw passes through the bend 54 and is fixedly connected to the ratchet located in the middle of the opening. The other end of the ratchet is screwed to a fixing screw 56 that passes through the bend on the other side. The side of the body of the milling machine 51 has a ratchet tooth groove (not shown) corresponding to the ratchet.

[0026] The inclination adjustment device 9 includes an arc-shaped adjustment column 91 passing through the guide seat 1 and an adjustment screw 92 located on one side of the end of the guide seat 1.

[0027] During actual grooving, first select a suitable milling cutter according to the width of the inclined groove of the electrostatic ring skeleton and install it on the main body 51 of the milling machine; then adjust the inclination adjustment device 9 of the inclined plate 8 according to the gradient depth and distance of the inclined groove of the electrostatic ring skeleton so that the inclination of the inclined plate 8 is consistent with the inclination of the product inclined groove.

[0028] Draw a groove indicator line at the location of the groove in the electrostatic ring skeleton; connect the milling machine main unit 51, the hub 52, the guard plate 53, the guide slide plate 3, and the guide seat 1 together, and adjust the milling depth adjustment device 55 to make the milling depth consistent with the machining depth of the electrostatic ring skeleton.

[0029] The assembled device is then engaged with the electrostatic ring frame, aligning the marked groove indicator line on the electrostatic ring frame with the milling cutter groove on the guide seat 1. The frame height adjustment column 6 and frame width adjustment screw 7 are adjusted to ensure the device is firmly secured to the electrostatic ring frame. Then, the milling machine 5 is pushed, and the guide wheel 4 between the guard plate 53 and the guide slide plate 3 drives the milling machine 5 to slide within the guide groove 2, allowing the milling machine 5 to precisely machine the electrostatic ring frame. After machining, the frame width adjustment screw 7 is loosened to disassemble the machined electrostatic ring frame. A new electrostatic ring frame to be machined is then installed, and the frame width adjustment screw 7 is tightened to machine the next electrostatic ring frame.

[0030] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A device for processing inclined grooves in an electrostatic ring skeleton, characterized in that, The system includes a rectangular guide seat with a rectangular guide groove at the center of the upper part. A strip-shaped guide milling cutter groove is located at the center of the guide groove. The upper part of the guide groove is slidably connected to the milling machine via a guide slide and a guide wheel. At the four corners of the guide seat, there are frame height adjustment columns that pass through the guide seat longitudinally and are screwed to the guide seat. The lower end of each frame height adjustment column is provided with a frame width adjustment screw that passes through the frame height adjustment column laterally. An inclined plate is provided below the guide seat. One end of the inclined plate is hinged to the bottom of the guide seat, and the other end is connected to the guide seat via an inclination adjustment device.

2. The electrostatic ring skeleton inclined groove processing device as described in claim 1, characterized in that: The milling machine includes a main body, which is fixedly connected to a guard plate located at the bottom of the main body via a guard hub surrounding its lower part. The guard plate is adapted to a guide slide plate, which is adapted to a guide groove. Four guide wheels, fixedly connected to the guide slide plate at the four bottom corners of the guard plate, are provided. The guide wheels are in rolling connection with the side wall of the guide groove. Milling cutter through holes are provided in the center of the guide slide plate and the center of the bottom of the guard plate. The guard hub is fitted onto the body of the main body of the milling machine and has an opening on its side. The upper part of the opening of the guard hub has an outward bend, and the bend has a milling depth adjustment device and a fixing screw that penetrate the bend. The milling depth adjustment device includes a rotating screw and a ratchet. The rotating screw passes through the bend and is fixedly connected to the ratchet located in the middle of the opening. The other end of the ratchet is screwed to a fixing screw that passes through the bend on the other side. The side of the main body of the milling machine has ratchet tooth grooves corresponding to the ratchet.

3. The electrostatic ring skeleton inclined groove processing device as described in claim 1, characterized in that: The height adjustment columns of the skeleton are all screwed to the guide seat.

4. The electrostatic ring skeleton inclined groove processing device as described in claim 1, characterized in that: The frame width adjustment columns are all screwed together with the frame height adjustment screws.

5. The electrostatic ring skeleton inclined groove processing device as described in claim 1, characterized in that: The inclined plate has a sloping plate milling cutter groove in the center, which is the same as the guide milling cutter groove in position and width, and is longer than the guide milling cutter groove. The width of the inclined plate is the same as the guide groove, and the length is between the guide groove length and the guide seat length.

6. The electrostatic ring skeleton inclined groove processing device as described in claim 1, characterized in that: The inclination adjustment device includes an arc-shaped adjustment column passing through the guide seat and an adjustment screw located on one side of the end of the guide seat.

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