Universal processing device suitable for power module type insulating diaphragm

Abstract

The invention relates to a universal processing device suitable for a power supply module type insulating diaphragm, and solves the problem that a current device cannot meet the manufacturing requirements of a product insulating film in a scientific research stage. Comprising a positioning part, a guiding part, a cutting part and a punching part, the positioning part is connected with a mechanical part through a magnet or a screw and forms an adjustable space within a certain distance with the cutting part and the punching part, and the guiding part bears the cutting part and the punching part to achieve linear displacement within a certain distance. A digital display vernier caliper knife edge inner measuring jaw with the fixed size is placed between the positioning face and the cutting blade, the positioning face and the cutting blade are tightly attached and fixed to the digital display vernier caliper knife edge inner measuring jaw through a guiding part, the digital display vernier caliper is taken down, and a film is placed between the positioning face and the cutting blade and tightly attached to the positioning face. The cutting blade is pressed down to complete cutting, and the punching process is completed through the drill sleeve base and the punch of the punching part according to specific steps. The device is high in cutting and punching size precision, reliable in quality and high in manufacturing efficiency.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical manufacturing and relates to a general processing device suitable for insulating diaphragms of power module types. This device combines the use of a digital vernier caliper for measurement and value acquisition, and can achieve functions such as moving, adjusting, positioning, cutting, and punching of insulating diaphragms of power module types within a certain size range. Background Art

[0002] There are various power module type devices designed on electronic products, and an insulating film needs to be padded at the bottom to prevent contact short - circuit with the printed circuit board. The insulating film of the power module is generally made by processing polytetrafluoroethylene film, and its shape is mostly rectangular, with through - holes distributed on both sides for mating installation with module pins. The cutting of the insulating diaphragm of the power module type is usually operated by visual estimation according to the scale, with low accuracy and unable to meet the design size requirements of the insulating diaphragm's shape. Generally, the cutting tool head is fixed, and the method of adjusting the size by moving the insulating diaphragm has problems such as poor operability, low efficiency, and inconvenient adjustment. The hole - making process after the insulating diaphragm is cut is also relatively complex. Usually, it is drilled with a special mold. The quantity of different types of insulating diaphragms is proportional to the cost of the special mold, and the processing cycle of the mold also affects the processing progress of the insulating diaphragm.

[0003] Currently, there are two methods for processing insulating films: mechanical processing and laser processing. Laser processing is to program on a laser cutting machine and then perform the processing of through - holes and outer shapes. It has high efficiency but also high costs; mechanical processing mainly completes the processing of the outer shape and through - holes of the film through cutting molds, punching molds, etc. It has relatively high efficiency, but the cost of the mold is high and the production cycle is long, and each mold can only be applicable to one type of power module, requiring a large number of special molds. The above two processing methods for films are both suitable for the film processing of products with few types and large quantities. However, the products in the research and development stage have the characteristics of multiple varieties, small batches (ranging from several to dozens), and urgent processing tasks. The power modules on the products not only have many types, but also their outer dimensions are different, and due to the temporary change of the module model in the design state during the research and development stage, the model will also change. The above - mentioned mechanical processing and laser processing methods are only suitable for the film processing of products with few types, large quantities, and stable states. Therefore, they cannot meet the production requirements of insulating films for products with multiple varieties, small batches, and urgent processing progress in the research and development stage. Currently, operators can only make the insulating films of power modules by manual cutting, shearing, and punching, resulting in problems such as non - standard operation, unstable quality, and low production efficiency during film production (see Figure 10 ), and the film will affect the tin - penetration rate of its pins during the later welding of the power module, leading to defects such as poor tin - penetration during the welding of the power module. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] The present invention adopts a general movable cutting and punching unit to complete the cutting and punching processing of the insulating diaphragm, ensuring the dimensional accuracy requirements such as the shape, hole diameter, and hole pitch of the insulating diaphragm, and solving the problem that the current processing methods cannot meet the production requirements of insulating films for products with multiple varieties, small batches, and urgent processing schedules in the research stage.

[0006] (II) Technical Solution

[0007] The present invention mainly includes four types of parts: positioning, guiding, cutting, and punching. The positioning parts are connected to the mechanical components by magnets or screws, and form an adjustable space within a certain distance with the cutting and punching parts. The guiding parts carry the cutting and punching parts to achieve linear displacement within a certain distance. Place the inner measuring jaws of the digital display vernier caliper with set dimensions between the positioning surface and the cutting blade, and use the guiding parts to closely attach and fix the positioning surface, the cutting blade, and the inner measuring jaws of the digital display vernier caliper. Remove the digital display vernier caliper, place the film between the positioning surface and the cutting blade and press it against the positioning surface, and press down the cutting blade to complete the cutting. The drill bushing seat and the punch of the punching parts meet the punching requirements through the matching of the aperture sizes of common series, and at the same time complete the punching process according to specific steps.

[0008] The technical effects of the present invention are as follows:

[0009] The present invention provides a general processing device suitable for insulating diaphragms of power module types. By combining the measurement and value-taking of the digital display vernier caliper, the cutting and punching unit can realize functions such as moving, adjusting, positioning, cutting, and punching within a certain size range. The outstanding advantage of the present invention is that the design scheme is easy to implement, the cutting and punching dimensional accuracy is high, and it can be commonly used in processing occasions for manually cutting the external dimensions of films. Aiming at the problem of processing the insulating film of the power module in the above-mentioned research stage products, compared with the problems of inconsistent film size, poor quality, and low efficiency in manual film production, the cutting, positioning, clamping, and punching technologies of this film production device have characteristics such as standardization, reliability, and good consistency. It originally took 30 minutes to manually cut, punch, and trim an insulating film with 20 holes. The average production time per film for small-batch production of this kind of insulating film by this production device is expected to be about 10 minutes. Not only can the film quality be effectively guaranteed, but the production efficiency will also be greatly improved! The later application can effectively meet the trial production progress and quality of scientific research products. Description of the Drawings

[0010] Figure 1 is the product drawing of the device of the present invention;

[0011] Figure 2 is the exploded view of the device of the present invention;

[0012] Figure 3 is the schematic diagram of the minimum cutting size of the device of the present invention and the upward movement of the positioning strip;

[0013] Figure 4 It is a schematic diagram of the part where the inner jaws of the digital vernier caliper blade are used to determine the outer contour cutting size of the insulating diaphragm in the device of the present invention;

[0014] Figure 5 It is a structural diagram of the cutting base of the invention device, where Figure b is an enlarged view of part C of Figure a, Figure c is a top view of Figure a, Figure d is a left view of Figure c, and Figure e is a three-dimensional view;

[0015] Figure 6 It is a structural diagram of the blade of the invention device. Among them, Figure b is a sectional view taken along line C-C of Figure a, and Figure c is a top view of Figure a;

[0016] Figure 7 It is a schematic diagram of the size control corresponding to the insulating diaphragm in the device of the present invention;

[0017] Figure 8 It is a schematic diagram of the part where the inner jaws of the digital vernier caliper blade are used to determine the punching hole distance size of the insulating diaphragm in the device of the present invention;

[0018] Figure 9 It is a schematic diagram of the process of positioning and punching the insulating diaphragm by a general processing device suitable for insulating diaphragms of power module type, and the sequence is a - b - c - d;

[0019] Figure 10 It is the manual production of insulating film (the same module).

[0020] In the figure: 1 - knurled flat head screw; 2 - hexagon socket head cap screw; 3 - spring washer; 4 - plain washer; 5 - left slider; 6 - hexagon socket head cap screw; 7 - spring washer; 8 - plain washer; 9 - positioning strip; 10 - positioning strip seat; 11 - base plate; 12 - support plate; 13 - positioning key; 14 - cross recessed countersunk head screw; 15 - left X - guiding rod; 16 - pad table; 17 - pressing plate; 18 - cross recessed countersunk head screw; 19 - pillar; 20 - hexagon socket head cap screw; 21 - spring washer; 22 - plain washer; 23 - right X - guiding rod; 24 - hexagon socket head cap screw; 25 - spring washer; 26 - plain washer; 27 - right slider; 28 - knurled flat head screw; 29 - handle; 30 - Y - guiding rod; 31 - pressing rod; 32 - handle; 33 - drill bushing seat; 34 - circular magnet; 35 - punch; 36 - spring; 37 - cross recessed pan head screw; 38 - spring washer; 39 - plain washer; 40 - punching base; 41 - cross recessed pan head screw; 42 - spring washer; 43 - plain washer; 44 - nut; 45 - knurled flat head screw; 46 - positioning block; 47 - cross recessed pan head screw; 48 - spring washer; 49 - plain washer; 50 - plain washer; 51 - spring washer; 52 - nut; 53 - blade; 54 - cutting base; 55 - insulating diaphragm. Detailed implementation manners

[0021] The following further details the usage process of a general processing device suitable for insulating diaphragms of power module types.

[0022] A general processing device suitable for insulating diaphragms of power module types achieves the intended purpose in the following manner:

[0023] Such as Figure 1 and Figure 2As shown in the figure, the device consists of a knurled flat head screw (1), an internal hexagonal socket head cap screw (2), a spring washer (3), a plain washer (4), a left slider (5), an internal hexagonal socket head cap screw (6), a spring washer (7), a plain washer (8), a positioning strip (9), a positioning strip seat (10), a base plate (11), a support plate (12), a positioning key (13), a cross recessed countersunk head screw (14), a left X guide rod (15), a pad table (16), a pressure plate (17), a cross recessed countersunk head screw (18), a support column (19), an internal hexagonal socket head cap screw (20), a spring washer (21), a plain washer (22), a right X guide rod (23), an internal hexagonal socket head cap screw (24), a spring washer (25), a plain washer (26), a right slider (27), a knurled flat head screw (28), a handle (29), a Y guide rod (30), a pressure rod (31), a handle (32), a drill bushing seat (33), a circular magnet (34), a punch (35), a spring (36), a cross recessed pan head screw (37), a spring washer (38), a plain washer (39), a punching base (40), a cross recessed pan head screw (41), a spring washer (42), a plain washer (43), a nut (44), a knurled flat head screw (45), a positioning block (46), a cross recessed pan head screw (47), a spring washer (48), a plain washer (49), a plain washer (50), a spring washer (51), a nut (52), a blade (53), and a cutting base (54).It is characterized in that: The base plate (11) of a general processing device suitable for insulating diaphragms of power module classes is inlaid and connected with the support plate (12) and the positioning key (13) through cross recessed countersunk head screws (14); Four struts (19) are connected with the base plate (11) through hexagon socket head cap screws (20), spring washers (21), and plain washers (22); The punching base (40) and the cutting base (54) are sleeved on the Y guide rod (30), and can be moved and tightly positioned through knurled flat head screws (45); The left slider (5) and the right slider (27) are sleeved on the left X guide rod (15) and the right X guide rod (23), and are connected to the guide rods as a whole by hexagon socket head cap screws (2), spring washers (3), and plain washers (4), and can be moved and tightly positioned through knurled flat head screws (1) and knurled flat head screws (28); The left X guide rod (15) and the right X guide rod (23) are connected to the four struts (19) as a whole through hexagon socket head cap screws (24), spring washers (25), and plain washers (26); The positioning long seat (10) is connected to the strut (19) through hexagon socket head cap screws (6), spring washers (7), and plain washers (8), and the positioning strip (9) is inserted into the positioning groove of the positioning long seat (10); The handle (32) is connected to the blade (53) through screws, and the blade (53) is connected to the cutting base (54) through cross recessed pan head screws (47), spring washers (48), plain washers (49), plain washers (50), spring washers (51), and nuts (52); The handle (29) is connected to the pressure rod (31) through threads, and the pressure rod (31) is connected to the punching base (40) through cross recessed pan head screws (41), spring washers (42), plain washers (43), and nuts (44); The drill bushing seat (33) is magnetically attached to the punching base (40) through a circular magnet (34), and is then fastened with cross recessed pan head screws (37), spring washers (38), and plain washers (39); The punch (35) is inserted into the punch hole of the spring (36) and the punching base (40), and the punching process is realized by operating the pressure rod (31); The positioning block (46) is magnetically attached to the support plate (12) through a circular magnet (34), and is positioned by relying on the positioning key (13). The cushion table (16) is connected to the support plate (12). After the insulating diaphragm (55) fits with the positioning step of the positioning block (46), it is positioned, and the cushion table (16) and the pressing plate (17) press the insulating diaphragm (55) through cross recessed countersunk head screws (18).

[0024] Such as Figure 3As shown, the pallet part of the cutting base (54) can move left and right within the card slot of the positioning long seat (10), and the positioning long bar (9) can move up and down within the positioning slot of the positioning long seat (10). In the upward movement state, the positioning long bar (9) is stuck on the pallet of the cutting base (54) by gravity, and the upward movement state completes the positioning of the size between the minimum cutting size and the width of the pallet of the cutting base (54); in the downward movement state, the positioning long bar (9) is stuck in the positioning slot of the positioning long seat (10) by gravity, and the downward movement state completes the sizing of dimensions greater than the width of the pallet of the cutting base (54).

[0025] As Figure 4 shown, place the inner measuring jaws of the digital display vernier caliper with the set size between the positioning long bar (9) and the blade (53). Move the cutting base (54) to make the positioning long bar (9) and the blade (53) close to the inner measuring jaws of the digital display vernier caliper, and fasten the cutting base (54) with a knurled flat head screw (45). Remove the digital display vernier caliper, place the film between the positioning long bar (9) and the blade (53) and press it against the positioning long bar (9), then press down the blade (53) to complete the cutting.

[0026] The left X guide rod (15), the right X guide rod (23) and the Y guide rod (30) are all double-rod guides. There are two guide holes on the left slider (5), the right slider (27), the punching base (40) and the cutting base (54) respectively, which cooperate with the left X guide rod (15), the right X guide rod (23) and the Y guide rod (30). As Figures 1-9 shown, one guide hole is a round hole and one guide hole is a slotted hole.

[0027] As Figure 5 、 Figure 6 shown, the front angle of the cutting edge of the cutting base (54) is 10°, which is the same as the front angle of 10° of the blade (53). The thickness surface of the blade (53) is a large arc, centering towards the cutting edge direction of the cutting base (54).

[0028] The blade (53) is connected to the cutting base (54) by a cross recessed pan head screw (47), a spring washer (48), a plain washer (49), a plain washer (50), a spring washer (51) and a nut (52) with double-sided pre-tightening; there is a set of spring washer (48) and plain washer (49) for pre-tightening on the side of the cross recessed pan head screw (47), and there is also a set of plain washer (50) and spring washer (51) for pre-tightening on the side of the nut (52). This method combined with the large arc feature of the thickness surface of the blade (53) can ensure that the cutting edge is sharp and durable during the cutting process.

[0029] As Figure 7 、 Figure 8 shown, the inner measuring jaws of the digital display vernier caliper are stuck at the positions shown by the X-direction dimension and the Y-direction dimension, and after the dimension adjustment, the X-direction coordinate value and the Y-direction coordinate value of the corresponding hole on the insulating diaphragm (55) are positioned.

[0030] A general processing device suitable for insulating diaphragms of power module types, characterized in that: the base plate (11) is made of aluminum alloy, the pallet (12) is made of carbon steel, and the pad table (16) and the positioning block (46) can be attracted and tightly attached to the pallet (12) by the circular magnets (34) embedded at the bottom and leaning on the positioning key (13). As Figure 7 shown, after the outer side of the positioning block (46) fits with the punching base (40) in the X and Y directions, the origin of the punch hole is determined, and the inner step thereof fits and positions with the length and width sides of the insulating diaphragm (55).

[0031] As Figure 9 shown, the drill bushing seat (33) and the punch (35) meet the punching requirements through the matching of the aperture sizes of the common series. At the same time, the punching process is completed according to the following steps: move the positioning block (46) to fit with the positioning surfaces of the positioning key (13) in the X and Y directions, remove the drill bushing seat (33), move the punching base (40) to fit with the positioning block (46) in the X and Y directions, and then tighten the knurled flat head screws (28) and the knurled flat head screws (45). Refer to Figure 8 the parts shown and measure and record the X-direction dimension and the Y-direction dimension with a digital display vernier caliper; clamp the insulating diaphragm (55) with the pad table (16) and the pressure plate (17) and fit with the positioning surfaces of the positioning block (46) in the X and Y directions, and then press the insulating diaphragm (55) tightly with the cross recessed head screw (18); install the drill bushing seat (33) matching the punch (35). Refer to Figure 7 the parts shown, adjust the dimensions with a digital display vernier caliper, and then press the pressing rod (31) to drive the punch (35) and the spring (36) to complete the punching on the insulating diaphragm (55).

[0032] The usage steps of the device of the present invention are as follows:

[0033] 1. Insert the positioning strip (9) into the positioning strip seat (10) for standby.

[0034] 2. When the cutting size of the insulating diaphragm (55) is between the minimum cutting size and the width of the pallet of the cutting base (54), lift the positioning strip (9), insert the pallet part of the cutting base (54) into the card slot of the positioning strip seat (10), and the positioning strip (9) is stuck on the pallet of the cutting base (54) by gravity for standby; when the cutting size of the insulating diaphragm (55) is greater than the width of the pallet of the cutting base (54), directly pull out the pallet part of the cutting base (54) from the card slot of the positioning strip seat (10), and the positioning strip (9) is stuck in the card slot of the positioning strip seat (10) by gravity for standby.

[0035] 3. Place the inner measuring jaws of the digital vernier caliper with the cut size of the insulating diaphragm (55) between the positioning strip (9) and the blade (53). Move the cutting base (54) to make the positioning strip (9) and the blade (53) closely adhere to the inner measuring jaws of the digital vernier caliper, and fasten the cutting base (54) with the knurled flat head screw (45). Then remove the digital vernier caliper.

[0036] 4. Place the blank of the insulating diaphragm (55) between the positioning strip (9) and the blade (53) and press it against the positioning strip (9). Press down the blade (53) to complete the cutting.

[0037] 5. Repeat the above steps to complete the cutting of the outer dimensions of the insulating diaphragm (55).

[0038] 6. As Figure 9 shown, move the positioning block (46) to fit the positioning surfaces in the X and Y directions of the positioning key (13). Remove the drill bushing seat (33). After moving the punching base (40) to fit the positioning surfaces in the X and Y directions of the positioning block (46), tighten the knurled flat head screw (28) and the knurled flat head screw (45). Refer to Figure 8 the shown part and measure and record the X-direction dimension and the Y-direction dimension with a digital vernier caliper; clamp the insulating diaphragm (55) with the pad table (16) and the pressure plate (17) and press the insulating diaphragm (55) tightly with the cross recessed countersunk head screw (18) after it fits the positioning surfaces in the X and Y directions of the positioning block (46); install the drill bushing seat (33) matching the punch (35). Refer to Figure 7 the shown part, adjust the dimensions with a digital vernier caliper and then press down the pressure rod (31) to drive the punch (35) and the spring (36) to complete the punching on the insulating diaphragm (55).

[0039] 7. Repeat step 6, change the direction of the insulating diaphragm (55), reposition and clamp it to complete the punching process of the insulating diaphragm (55).

Claims

1. A general processing device suitable for insulating diaphragms of power modules, characterized in that: The invention comprises a base plate (11), a support plate (12) connected to the base plate (11), four pillars (19) fixedly connected to the four corners of the base plate (11), a left X-guide rod (15) and a right X-guide rod (23) fixedly connected between the two pillars at the left end and the two pillars at the right end, respectively, a left slider (5) and a right slider (27) respectively sleeved on the left X-guide rod (15) and the right X-guide rod (23), connected to the guide rods as a whole, and capable of moving and tightly fixed in position, a Y-guide rod (30) fixedly connected between the left slider (5) and the right slider (27), a punching base (40) and a cutting base (54) sleeved on the Y-guide rod (30), and capable of moving and tightly fixed in position, a positioning strip seat (10) having a positioning groove fixedly connected to the inner side of the two pillars (19) at the left end, a positioning strip (9) inserted into the positioning strip seat (10), and a positioning strip (10) having a positioning groove fixedly connected to the inner side of the two pillars (19) at the left end, and a positioning strip (9) inserted into the positioning strip seat (10) 0), a cutting base (54) is rotatably connected with a blade (53), a punching base (40) is rotatably connected with a pressure rod (31), a punch (35) is inserted into a spring (36) and a punch hole of the punching base (40), and a punching process is realized by operating the pressure rod (31), a drill sleeve seat (33) is magnetically attached to the punching base (40) through a circular magnet (34), and is detachably connected to the punching base (40), a positioning key (13) is connected to the support plate (12), a positioning block (46) and a pad (16) are connected to the support plate (12) and are positionally adjustable, the positioning block (46) is positioned by the positioning key (13), the insulating diaphragm (55) is positioned after being attached to the positioning step of the positioning block (46), and a pressure plate (17) is connected to the pad (16) to press the insulating diaphragm (55).

2. A universal processing device suitable for power module type insulating diaphragms according to claim 1, characterized in that: The support plate of the cutting base (54) can move left and right in the positioning groove of the positioning strip seat (10), and the positioning strip (9) can move up and down in the positioning groove of the positioning strip seat (10). In the upward state, the positioning strip (9) is clamped on the support plate of the cutting base (54) by gravity, and the positioning of the size between the minimum cutting size and the width of the support plate of the cutting base (54) is completed in the upward state; in the downward state, the positioning strip (9) is clamped in the clamping groove of the positioning strip seat (10) by gravity, and the positioning of the size greater than the width of the support plate of the cutting base (54) is completed in the downward state.

3. A universal processing device suitable for power module type insulating diaphragms according to claim 1, characterized in that: The left X guide rod (15), the right X guide rod (23) and the Y guide rod (30) are all double-rod guides, and the left slider (5), the right slider (27), the punching base (40) and the cutting base (54) are each provided with two guide holes respectively matched with the left X guide rod (15), the right X guide rod (23) and the Y guide rod (30).

4. A universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: One of the two guide holes is a round hole, and the other is a strip hole.

5. The universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: The front angle of the cutting edge of the cutting base (54) is 10°, which is consistent with the front angle of the blade (53) of 10°. The thickness surface of the blade (53) is a large arc, which is centripetal to the cutting edge direction of the cutting base (54).

6. A universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: The blade (53) is connected to the cutting base (54) by double-side pre-tightening through a cross slot pan head screw (47) and a nut (52). The cross slot pan head screw (47) side has a group of spring washers and flat washers for pre-tightening, and the nut (52) side also has a group of flat washers and spring washers for pre-tightening.

7. A universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: The measuring jaws in the blade of the digital display vernier caliper are clamped in the X-direction dimension and the Y-direction dimension to adjust the dimensions, thereby completing the positioning of the X-direction coordinate value and the Y-direction coordinate value of the corresponding hole on the insulating diaphragm (55).

8. The universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: The base plate (11) is made of aluminum alloy, and the support plate (12) is made of carbon steel.

9. A universal processing device suitable for power module type insulating diaphragms according to claim 3, characterized in that: The pad (16) and the positioning block (46) are closely attached to the support plate (12) by leaning against the positioning key (13) through the circular magnet (34) embedded in the bottom. The outer side of the positioning block (46) is attached to the punching base (40) in the X direction and the Y direction to determine the punch hole origin, and the inner step is attached to the length and width of the insulating diaphragm (55) for positioning.

10. A universal processing device suitable for power module type insulating diaphragms according to any one of claims 1 to 10, characterized in that: The method of using the device is as follows: S1. The positioning strip (9) is inserted into the positioning strip seat (10) for standby use; S2. When the cutting size of the insulating diaphragm (55) is between the minimum cutting size and the width of the cutting base (54) support plate, lift the positioning strip (9), insert the support plate portion of the cutting base (54) into the positioning groove of the positioning strip seat (10), and the positioning strip (9) is stuck on the support plate of the cutting base (54) by gravity for standby use; when the cutting size of the insulating diaphragm (55) is larger than the width of the cutting base (54), directly pull the support plate portion of the cutting base (54) out of the positioning groove of the positioning strip seat (10), and the positioning strip (9) is stuck in the positioning groove of the positioning strip seat (10) by gravity for standby use; S3. The digital vernier caliper blade measuring claws that have been set to the cutting size of the insulating diaphragm (55) are placed between the positioning strip (9) and the blade (53), and the cutting base (54) is moved to closely fit the positioning strip (9) and the blade (53) with the digital vernier caliper blade measuring claws, and the cutting base (54) is fastened with a knurled flat head screw (45), and then the digital vernier caliper is removed; S4. The blank of the insulating diaphragm (55) is placed between the positioning strip (9) and the blade (53) and is close to the positioning strip (9), and the blade (53) is pressed down to complete the cutting; S5. Repeat the above steps to complete the cutting of the outer dimensions of the insulating diaphragm (55); S6. Move the positioning block (46) to fit the positioning surface of the positioning key (13) in the X and Y directions, remove the drill sleeve seat (33), move the punching base (40) to fit the positioning surface of the positioning block (46) in the X and Y directions, tighten the knurled flat head screw (28) and the knurled flat head screw (45), and use a digital vernier caliper to measure and record the X-direction and Y-direction dimensions; the pad (16) and the pressure plate (17) clamp the insulating diaphragm (55) and fit the positioning surface of the positioning block (46) in the X and Y directions, and then use the cross recessed countersunk screw (18) to press the insulating diaphragm (55); install the drill sleeve seat (33) that matches the punch (35), adjust the size with the digital vernier caliper, and then press the pressure rod (31) to drive the punch (35) and the spring (36) to complete the punching on the insulating diaphragm (55); S7. Repeat step S6, change the direction of the insulating diaphragm (55), reposition and clamp it, and complete the punching process of the insulating diaphragm (55).

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