Repairing tool and reworking method for module

Abstract

The invention relates to a module repairing tool and a module reworking method. The module repairing tool comprises an ejector rod part and a tool body which are coaxial and oppositely arranged. The ejector rod part is mounted on a lathe tailstock; the tool body is installed in a lathe clamping piece. A supporting table part is arranged on the tool body and used for containing a workpiece to be machined. The supporting table part is provided with four side check blocks; the device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] This invention relates to rework tooling and methods for modules, and to the field of electronic product repair, particularly to power module repair. Background Technology

[0002] Currently, in the rework process of 1*1 modules, the method for removing the stamped shell is to use diagonal pliers to cut and peel it off. This method requires a high level of operator skill and involves significant stress during the cutting process, which can easily damage the internal PCB components.

[0003] The technical solution of the present invention can accurately cut off the edges and corners of the stamping module, effectively avoiding human error. At the same time, the stamped shell after the edges and corners are cut off is very easy to peel off, with very little stress, and is not easy to damage the internal PCB components. Summary of the Invention

[0004] This invention requires a high level of operator proficiency and involves significant stress during the shearing process, which can easily damage internal PCB components. In general, the technical problem this invention aims to solve is to provide a rework tooling and method for a module.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: In order to automate the processing of the work to be done, a rework tooling for a module includes a top rod and a tooling body arranged coaxially and facing each other. The push rod is mounted on the tailstock of the lathe; The tooling body is installed in the lathe card; The tooling body is provided with a support platform for placing the workpiece to be processed; The support platform has four side stops; Corresponding process flares are provided between the four side stops; Four process flares are provided around the support platform to expose the edges of the workpiece to be processed; The center of the workpiece to be processed, located in the support section, coincides with the rotation center of the tooling body; The top rod rotates to abut the workpiece being processed. The workpiece to be processed is square.

[0006] As a further improvement to the above technical solution: In order to provide support and facilitate contact with the workpiece, the push rod includes a tapered shank for insertion into the tailstock of the lathe. A rotating rotor head is provided at the front end of the cone shank; The rotor head is equipped with a flat-head rotary top at its front end; The flat-head rotary mandrel abuts against the outer surface of the workpiece to be processed.

[0007] To facilitate self-centering, the tool body is a rotating body.

[0008] A cutting tool is provided on one side of the tooling body for turning the edge to a set depth.

[0009] To facilitate chipping, a process collar is fixed on the outer periphery of the workpiece. This achieves limiting, thereby solving the problem of chipping, increasing turning speed, and preventing deformation of the workpiece. The inner cavity of the process ring is equipped with four retaining steps. The bayonet step enters the corresponding edge part of the adapter; A process gap is provided between the corresponding side wall of the workpiece to be processed and the corresponding inner side wall of the process ring. Insert the process gap into the corresponding side stop block.

[0010] The process ring has a connecting portion located above the bayonet step. A filling portion is provided between the outer wall of the workpiece and the inner cavity of the process ring, thereby enabling continuous high-speed cutting while preventing the process ring from breaking. The filler is an adhesive, spot weld, or solder.

[0011] To facilitate the exposure of the edges, a process groove is provided below the bottom of the process flaring groove.

[0012] For easy handling, a lower cross groove is provided at the bottom of the tray section; The process slot connects to the lower cross slot.

[0013] To facilitate pressure fixation, elastic steel balls are provided on the inner side wall of the side stop block for pressure contact with the corresponding side wall of the workpiece.

[0014] The thickness of the process ring is greater than the thickness of the workpiece to be processed.

[0015] A module repair method, using the aforementioned repair tooling, includes the following steps; Step 1: First, based on the fact that the workpiece is square, fit the process ring onto the workpiece and adapt the edge part to the bayonet step; then, add a filling part between the outer wall of the workpiece and the inner cavity of the process ring; the filling part's filling position and thickness are sufficient to meet the requirements after the edge part is machined. Step two: First, install the push rod onto the tailstock of the lathe; then, install the tooling body into the lathe clamp; the push rod abuts against the end face of the workpiece to be machined. Step 3: After turning is completed, remove the workpiece from the process slot. Step four: Pry open the area between the remaining connecting parts, and use the filling part to drive the outer wall of the workpiece to be processed to open.

[0016] The filling section will be cleaned to facilitate subsequent operations.

[0017] This invention enables high-speed cutting, thereby avoiding damage to internal components caused by shell deformation during processing. This is something that existing technologies could not conceive of.

[0018] This invention is reasonably designed, low in cost, sturdy and durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and easy to use.

[0019] This invention places a 1*1 module in the slot of a tooling, uses a flat-head rotary mandrel to press the 1*1 module tightly, starts the lathe, and adjusts the speed and feed of the cutting tool to machine the edges of the small module, thereby removing the outer shell while ensuring that the chips do not enter the shell and that the workpiece is not damaged by the machining force.

[0020] This device has low cost, can be operated using common equipment, is economical, has good operational consistency, and causes little stress damage to PCBA modules. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the top rod part of the present invention.

[0022] Figure 2 This is a schematic diagram of the improved top rod structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the workpiece to be processed according to the present invention. Figure 4 This is a schematic diagram of the processing principle of the present invention. The components are: 1. Top rod; 2. Flat-head rotary top; 3. Rotor head; 4. Tapered shank; 5. Workpiece to be machined; 6. Tool body; 7. Cutting tool; 8. Edge; 9. Process ring; 10. Bayonet step; 11. Process gap; 12. Support platform; 13. Side block; 14. Process flare; 15. Process groove; 16. Lower cross groove; 17. Elastic steel ball; 18. Connecting part; 19. Filling part. Detailed Implementation like Figure 1-4 As shown, the rework fixture for the module in this embodiment includes a top rod 1 and a fixture body 6 that are coaxially arranged and facing each other. The push rod 1 is mounted on the tailstock of the lathe; The tooling body 6 is installed in the lathe card; A support platform 12 is provided on the tooling body 6 for placing the workpiece 5 to be processed; The support platform 12 has four side stops 13; A corresponding process flare 14 is provided between the four side blocks 13; Four process flares 14 are provided around the support platform 12 to expose the edges 8 of the workpiece 5 to be processed; The center of the workpiece 5 to be processed, located in the support section 12, coincides with the rotation center of the tooling body 6; The top rod 1 rotates to abut against the receiving workpiece 5; The workpiece 5 to be processed is square.

[0024] The push rod portion 1 includes a tapered shank portion 4 for insertion into the tailstock of the lathe. A rotating rotor head 3 is provided at the front end of the cone shank 4; The rotor head 3 is provided with a flat-head rotary top 2 at its front end; The flat-head rotary mandrel 2 abuts against the outer surface of the workpiece 5 to be processed.

[0025] The tool body 6 is a rotating body.

[0026] A cutting tool 7 is provided on one side of the tool body 6 for turning the edge 8 to a set depth.

[0027] A process collar 9 is fixed on the outer periphery of the workpiece 5 to be processed; The inner cavity of the process ring 9 is provided with four locking steps 10; The bayonet step 10 enters the corresponding edge part 8 of the adapter; A process gap 11 is provided between the side wall of the workpiece 5 to be processed and the inner side wall of the process ring 9. The process gap 11 is inserted into the corresponding side stop block 13.

[0028] The outer wall of the workpiece 5 to be processed is bonded, spot-welded or soldered to the inner cavity of the process ring 9.

[0029] A process slot 15 is provided below the bottom of the process flare 14 slot.

[0030] A lower cross groove 16 is provided at the bottom of the support platform 12; The process slot 15 connects to the lower cross slot 16.

[0031] An elastic steel ball 17 is provided on the inner side wall of the side stop 13 for pressure contact with the corresponding side wall of the workpiece 5 to be processed.

[0032] The thickness of the process ring 9 is greater than the thickness of the workpiece 5 to be processed; The process collar 9 has a connecting part 18 located above the bayonet step 10.

[0033] like Figure 1-4 As shown, the rework method of the module in this embodiment, with the aid of the above-mentioned rework tooling, includes the following steps; Step 1: First, based on the fact that the workpiece 5 is square, the process ring 9 is fitted onto the workpiece 5, and the edge part 8 is adapted to the bayonet step 10; then, a filling part 19 is added between the outer wall of the workpiece 5 and the inner cavity of the process ring 9; the filling position and thickness of the filling part 19 are satisfied after the edge part 8 is turned. Step two: First, install the push rod 1 on the tailstock of the lathe; then, install the tooling body 6 in the lathe card; the push rod 1 abuts against the end face of the workpiece 5 to be machined. Step 3: After turning is completed, remove the workpiece 5 from the process slot 15. Step four: pry open the area between the remaining connecting parts 18, and use the filling part 19 to drive the outer wall of the workpiece 5 to be processed to open. The present invention utilizes the top rod part 1 to achieve top support, the tooling body 6 to achieve three-jaw fixation, the flat-head rotary top 2 to achieve abutment, the rotor head 3 which is a bearing connection, the tapered shank part 4 is a Morse taper, and the workpiece 5 to be processed is machined by the cutting tool 7 to cut the edge part 8.

[0034] As a further improvement, the process ring 9 enables continuous cutting, improving efficiency; the jaw step 10 provides positioning, thus transforming isolated right angles into a continuous rotation state, preventing chipping, enabling high-speed cutting, and avoiding sudden collisions between the cutting edge and corners, which could damage the cutting edge or deform the corners, thereby protecting internal components from damage. The process gap 11 facilitates the locking and fixing of the side stop block 13; the support platform 12 provides support; the process flare 14 facilitates the exposure of corners; the process groove 15 facilitates the separation and disassembly of workpieces; the lower cross groove 16 and the elastic steel ball 17 provide lateral positioning; and the connecting part 18 prevents separation. Simultaneously, the residual filler material is used to drive the outer shell outward, which facilitates the removal of slag and filler material.

[0035] This design uses a standard lathe chuck to hold the cylindrical fixture body. The runout value of the fixture body is calibrated to within 0.02mm using a dial indicator. The top head on the lathe tailstock is replaced with a flat-head rotary top head. The 1*1 module is placed in the slot of the fixture, and the flat-head rotary top head is used to press the 1*1 module tightly. The lathe is started, and the speed and feed of the cutting tool are adjusted appropriately to machine the edges of the small module, thereby achieving the purpose of removing the outer shell.

[0036] like Figure 1 As shown, the lathe will drive the tooling body and the 1*1 module to rotate. The flat-head rotary mandrel applies clamping force to the 1*1 module, and the cutting tool will machine the red machining edge. This solution is only suitable for modules with the same length and width.

[0037] It should be noted that the elastic steel ball 17 is theoretically for protection, but it is not needed in practice, as it would lead to excessively high costs.

[0038] The present invention has been described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed in detail.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of the present invention can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All technical contents not described in detail in the present invention are well-known technologies.

Claims

1. A rework fixture for a module, characterized in that: It includes a top rod (1) that is coaxial and opposite to each other and a tooling body (6); The push rod (1) is mounted on the tailstock of the lathe; The tooling body (6) is installed in the lathe card; A support platform (12) is provided on the tooling body (6) for placing the workpiece (5) to be processed. The support platform (12) has four side stops (13); A corresponding process flare (14) is provided between the four side blocks (13); Four process flares (14) are provided around the support platform (12) to expose the edges (8) of the workpiece (5) to be processed. The center of the workpiece (5) to be processed in the support section (12) coincides with the rotation center of the tooling body (6); The top rod (1) rotates to abut against the receiving workpiece (5); The workpiece to be processed (5) is square.

2. The rework fixture for the module according to claim 1, characterized in that: The push rod part (1) includes a taper shank part (4) for insertion into the tailstock of the lathe; The front end of the cone shank (4) is provided with a rotating rotor head (3); The rotor head (3) is provided with a flat-head rotary top (2) at the front end; The flat-head rotary head (2) abuts against the outer surface of the workpiece (5).

3. The rework fixture for the module according to claim 1, characterized in that: The tool body (6) is a rotating body.

4. The rework fixture for the module according to claim 1, characterized in that: A cutting tool (7) is provided on one side of the tool body (6) for turning the edge (8) to a set depth.

5. The rework fixture for the module according to any one of claims 1-4, characterized in that: A process collar (9) is fixed on the outer periphery of the workpiece (5); The inner cavity of the process ring (9) is provided with four locking steps (10); The bayonet step (10) enters the corresponding edge part (8); A process gap (11) is provided between the side wall corresponding to the workpiece (5) and the inner wall corresponding to the process ring (9). The process gap (11) is inserted into the corresponding side stop block (13).

6. The rework fixture for the module according to claim 5, characterized in that: A filling part (19) is provided between the outer wall of the workpiece (5) to be processed and the inner cavity of the process ring (9). The filler (19) is an adhesive, spot weld or solder.

7. The rework fixture for the module according to claim 5, characterized in that: A process slot (15) is provided below the bottom of the process flare (14).

8. The rework fixture for the module according to claim 7, characterized in that: A lower cross groove (16) is provided at the bottom of the support section (12). The process slot (15) connects to the lower cross slot (16).

9. The rework fixture for the module according to claim 7, characterized in that: The thickness of the process ring (9) is greater than the thickness of the workpiece (5); The process ring (9) has a connecting part (18) located above the bayonet step (10).

10. A method for reworking a module, characterized in that: The rework method utilizes the rework tooling described in claim 1. Includes the following steps; Step 1: First, based on the fact that the workpiece (5) is square, the process ring (9) is fitted onto the workpiece (5), and the edge part (8) is adapted to the bayonet step (10); then, a filling part (19) is added between the outer wall of the workpiece (5) and the inner cavity of the process ring (9); the filling position and thickness of the filling part (19) are satisfied after the edge part (8) is turned. Step 2: First, install the push rod (1) on the tailstock of the lathe; then, install the tool body (6) in the lathe card; the push rod (1) abuts against the end face of the workpiece (5) to be machined; Step 3: After turning is completed, the workpiece (5) is taken out using the process slot (15); Step 4: Open the area between the remaining connecting parts (18) and use the filling part (19) to drive the outer wall of the workpiece (5) to be processed to open.

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