Machining method of precision part in communication connector mold

Abstract

The invention discloses a method for machining a precise part in a communication connector die, which comprises the following steps of: pre-machining the part by utilizing a first electrode tip which is vertically downward along a Z axis and adopting a machining mode without translational motion, so that a first middle boss and a first edge boss are formed on the part; a supporting bottom surface of the part is machined by utilizing the first electrode tip to vertically continue to move downwards along the Z axis and adopting a circular translation machining mode, and a second middle boss and a second edge boss are formed on the supporting bottom surface; a first electrode tip is used for conducting spiral conical reduction electric spark machining in the Z-axis direction from the supporting bottom face of the part; and the second electrode tip is vertically downward along the Z axis and is machined to the supporting bottom face of the part in a circular translation machining mode. By changing the machining and manufacturing method of the tool electrode and the machining method of the electric spark, the feasibility of batch machining of the parts is achieved, the machining yield is greatly improved, the quality of the parts is stable without being scrapped, and the precision is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a processing method for precision parts in a communication connector mold. Background Art

[0002] EDM is actually to copy the shape of the electrode head to the part, so as to form the reverse shape of the electrode head on the part. Theoretically, the shape of the electrode head is the same as the shape of the machined part. Therefore, the shape, shape accuracy, dimensional accuracy and surface finish of the machined electrode head directly determine the shape, shape accuracy, dimensional accuracy and surface quality of the EDM position on the machined part. Therefore, in order to machine high-quality precision parts with EDM, the manufacturing accuracy and quality of the electrode are particularly important, especially when machining smaller shapes on precision parts. Since the shape of the electrode head is also smaller, in addition to reasonable EDM parameters, high-quality precision electrodes are also required to improve the replication accuracy of the precision shape of the parts.

[0003] like Figure 1 As shown, part 100 is a core precision part used in high-speed communication connector molds. The part is characterized by small shape, high geometric accuracy, high consistency requirements, and very strict processing requirements. Its molding parts have part shapes A101, part shape B102, part shape C103, part shape D104 and part shape E105. Part shape A has arcs of R0.100mm and R0.063mm, and the minimum width is 0.126mm; part shape A and part shape B are bosses and are 0.131mm apart, part shape C is a C-shaped chamfer of 0.05mm, part shape D is a sharp corner of R0.015mm, and part shape E is a bottom platform. Currently, these shapes can only be completed by electrospark machining of electrode heads of the same shape.

[0004] like Figure 2 and Figure 3 As shown, it is an electrode head 200 used for processing part 100, and the electrode head 200 has an electrode shape A201 matching the part shape A, an electrode shape B202 matching the part shape B, an electrode shape C203 matching the part shape C, an electrode shape D204 matching the part shape D, and an electrode shape E205 matching the part shape E. Simply put, the forming part of the electrode head 200 is the reverse shape of the forming part of the part 100, and the electrode shape B and the electrode shape C are both grooves; the current processing and manufacturing method of the electrode head 200 can only be completed by milling using a high-speed CNC milling center (referred to as CNC).

[0005] In the electrode processing and manufacturing process, when CNC mills this kind of electrode head 200 with many shapes and relatively small size, it can only use expensive small carbide milling cutters with a diameter of less than or equal to ø0.15mm. Such small milling cutters wear quickly, have a short service life, need to be replaced frequently, are difficult to mill and take a long time, and the shape and size of the milled electrode head are difficult to guarantee. In particular, the C angle of the electrode shape C is very difficult to control and needs to be repeatedly trimmed, and the electrode manufacturing cost is very high. In addition, since the electrode head size cannot be fully detected, the electrode quality is also difficult to fully guarantee, and electrode quality problems can only be discovered during the EDM process.

[0006] In the part processing link, when the EDM processes the part 100, the electrode head 200 and the discharge area of ​​the part 100 form a closed inner cavity, and the carbon particles generated by the electric corrosion are difficult to discharge. The high concentration of regional carbon particles causes serious damage to the edges of the part shapes A and B, resulting in the overall shape contour of the part 100 not being clear enough, and the arcs R0.100mm and R0.063mm on the part shape A are too large and have poor verticality, the C angle of the part shape C is irregular and has a large difference, and the sharp angle of the part shape D is R0.05~R0.07mm; in this case, the EDM can only repeatedly measure and correct the part 100, and the electrode head also needs to be CNC repaired according to the actual EDM processing situation. The EDM part correction process is inefficient, the scrap rate is high, and the quality is not controlled. The processed parts can only be barely tried and cannot meet the final requirements of the product. Summary of the invention

[0007] The purpose of the present invention is to provide a method for processing precision parts in a communication connector mold to solve the above-mentioned problems existing in the prior art.

[0008] In order to achieve the above object, the present invention adopts the following technical solution: A method for processing precision parts in a communication connector mold, comprising the following steps: Step A, pre-processing the part vertically downward along the Z axis using a first electrode head and using a processing method without translation, so that a first middle boss and a first edge boss are formed on the part, the first electrode head is provided with a first middle through hole and a plurality of first edge through holes, the plurality of first edge through holes are arranged on the peripheral side of the first middle through hole, the first middle boss matches the first middle through hole, and the first edge boss matches the first edge through hole; Step B, using the first electrode head to continue to move vertically downward along the Z axis and use a circular translation processing method to process the support bottom surface of the part, and forming a second middle boss and a second edge boss on the support bottom surface based on the first middle boss and the first edge boss; Step C, using the first electrode head to perform spiral conical reduction electrospark machining from the support bottom surface on the part upward along the Z axis, so that the second intermediate boss is processed into the third intermediate boss and the first transition surface, and the second edge boss is processed into the third edge boss and the second transition surface, the third intermediate boss and the support bottom surface are transitioned through the first transition surface, and the third edge boss and the support bottom surface are transitioned through the second transition surface; Step D, use the second electrode head to process vertically downward along the Z axis and use a circular translation processing method to process to the supporting bottom surface of the part, process the third intermediate boss into a fourth intermediate boss, and remove the first transition surface to form a sharp angle between the fourth intermediate boss and the supporting bottom surface, retaining the third edge boss and the second transition surface; a second intermediate through hole and a plurality of second edge through holes are provided on the second electrode head, and the plurality of second edge through holes are arranged on the peripheral side of the second intermediate through hole, and the size of the second edge through hole is larger than the size of the second intermediate boss.

[0009] As an optional implementation of the above technical solution, in the process of performing spiral cone reduction EDM along the Z-axis upward using the first electrode head, α is the inclination angle, β is the helix lead angle, H is the final EDM processing height, W is the maximum translational momentum of the EDM, △h is the EDM processing height when the helix lead angle β follows the inclination angle α and the spiral cone rises one circle, △w is the translational momentum of the EDM processing when the helix lead angle β follows the inclination angle α and the spiral cone rises one circle △h, △w gradually expands with the rise of △h and W gradually shrinks until △w=W, ending this section of EDM processing.

[0010] As an optional implementation of the above technical solution, after the pre-machining of the part is completed, the first actual side allowance of the first intermediate boss and the second actual side allowance of the first edge boss are measured, and the electrospark machining parameters are adjusted to compensate for the deviation according to the difference between the first actual side allowance of the first intermediate boss and the first theoretical side allowance and the difference between the second actual side allowance of the first edge boss and the second theoretical side allowance.

[0011] As an optional implementation of the above technical solution, the first theoretical side margin of the first intermediate boss is the projection distance of the first transition surface on the Z-direction horizontal plane plus the avoidance distance between the fourth intermediate boss and the first electrode head; the second theoretical side margin of the first edge boss is the projection distance of the second transition surface on the Z-direction horizontal plane.

[0012] As an optional implementation of the above technical solution, the first electrode head and the second electrode head are both old electrodes.

[0013] As an optional implementation of the above technical solution, the long side of the first electrode head and the long side of the second electrode head are connected to each other to form a tool electrode, and an electrode clamping position is provided at one end of the tool electrode.

[0014] As an optional implementation of the above technical solution, the material of the tool electrode is tungsten copper or chromium copper.

[0015] As an optional implementation of the above technical solution, the processing method of the tool electrode includes: using a precision grinder to process all the external dimensions of the tool electrode on the blank electrode, and ensuring the parallelism and verticality between the surfaces; and then using a precision wire cutting process of cutting two and trimming six to complete the shape processing of the first electrode head and the second electrode head.

[0016] As an optional implementation of the above technical solution, before pre-machining of the part, all the outer dimensions of the part are machined by a precision grinder, and a rough machining allowance is left on the machined top surface of the part.

[0017] As an optional implementation of the above technical solution, after the second electrode head is processed in a circular translation manner, a planar electrode is used to remove the rough processing allowance.

[0018] The beneficial effects of the present invention are: The present invention makes batch processing of parts feasible by changing the processing and manufacturing method of tool electrodes and the processing method of electric sparks, and greatly improves the processing yield rate. The quality of parts is stable and there is no scrap, the precision is guaranteed, and the technical life cycle is long. It has a positive effect on the injection molding production yield rate and production efficiency of subsequent products. For the processing of parts in this type of high-value-added high-speed communication connector molds, it has higher economic benefits and is very competitive in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of parts in one embodiment of the present invention; Figure 2 It is a processing state diagram of the electrode head in the prior art; Figure 3 It is a processing state diagram of parts and electrode heads in the prior art; Figure 4 is a view showing the relationship between a part and a first electrode head in one embodiment of the present invention; Figure 5 is a view showing the relationship between a part and a second electrode head in one embodiment of the present invention; Figure 6 It is a schematic diagram of the position relationship of the electric spark between the part and the tool electrode in one embodiment of the present invention; Figure 7 is a view of a part before EDM preparation machining in one embodiment of the present invention; Figure 8 is a processing state diagram of step A in one embodiment of the present invention; Fig. 9 is a processing state diagram of step B in one embodiment of the present invention; Fig.10 is a processing state diagram of step C in one embodiment of the present invention; Fig.11 is a processing state diagram of step D in one embodiment of the present invention; Fig.12 is a diagram of a processing state of a planar electrode in one embodiment of the present invention; Fig.13 is a diagram of an electrospark machining process of a first electrode head and a part in one embodiment of the present invention; Fig.14 It is a diagram of the processing of the first electrode head and the parts in step C in one embodiment of the present invention.

[0020] In the figure: 100-part; 101-part shape A; 102-part shape B; 103-part shape C; 104-part shape D; 105-part shape E; 106-first intermediate boss; 107-first edge boss; 108-support bottom surface; 109-second intermediate boss; 110-second edge boss; 111-third intermediate boss; 112-first transition surface; 113-third edge boss; 114-second transition surface; 115-fourth intermediate boss; 116-pointed corner; 117-rough machining allowance; 118-EDM part; 200-electrode head; 201-electrode shape A; 202-electrode shape B; 203-electrode shape C; 204-electrode shape D; 205-electrode shape E; 300-tool electrode; 301-first electrode head; 302-first middle through hole; 303-first edge through hole; 304-second electrode head; 305-second middle through hole; 306-second edge through hole; 307-first actual side margin; 308-second actual side margin; 309-electrode clamping position; 310-plane electrode. DETAILED DESCRIPTION

[0021] like Figure 4-Figure 14 As shown, this embodiment provides a method for processing precision parts in a communication connector mold, comprising the following steps: Step 1: Processing of the first electrode head 301. The shape of the component 100 is as follows: Figure 1As shown, firstly, a first edge through hole 303 and a first middle through hole 302 matching the part shape A101 and the part shape B102 are processed on an old electrode head, and the first middle through hole 302 is enlarged by 0.015mm relative to the part shape B102; secondly, the shape corresponding to the part shape C103 on the old electrode head is cancelled, and the first edge through hole 303 and the first middle through hole 302 on the old electrode head are both through holes penetrating the old electrode head, so as to obtain a first electrode head 301, as shown in FIG. Figure 4 shown.

[0022] Step 2: Processing of the second electrode head 304. A second edge through hole 306 and a second middle through hole 305 matching the part shape A101 and the part shape B102 are processed on another old electrode head, and the second edge through hole 306 is enlarged by 0.01 mm relative to the part shape A101. The second edge through hole 306 and the second middle through hole 305 on the old electrode head are both through holes that penetrate the old electrode head, and then the second electrode head 304 is obtained. Figure 5 shown.

[0023] Step 3: Butt the long side of the first electrode head 301 and the long side of the second electrode head 304 together, make an array of first edge through holes 303 and first middle through holes 302 on the first electrode head 301 along its wide side direction, and make an array of second edge through holes 306 and second middle through holes 305 on the second electrode head 304 along its wide side direction, and the array distance and number are determined according to the actual EDM requirements; then, add a lateral electrode clamping position 309 on one side of the long side of the first electrode head 301 after the array is completed, and finally form a side-tied tool electrode 300 with two different electrode heads, such as Figure 6 shown.

[0024] Step 4: Determine the discharge gap between the first electrode head 301 and the second electrode head 304. The discharge gap of the first electrode head 301 is determined by the projection distance of the part shape B102 on the Z-direction horizontal plane and the loss of the edge of the first electrode head 301 during the electrospark machining process; assuming that the projection distance of the part shape B102 on the Z-direction horizontal plane is W, and the loss of the edge of the first electrode head 301 during the electrospark machining process is R, then the discharge gap of the first electrode head 301 is WR. In this embodiment, the projection distance W of the part shape B102 on the Z-direction horizontal plane is 0.05mm, and the loss of the edge of the first electrode head 301 during the electrospark machining process is R=0.01mm, then the discharge gap of the first electrode head 301 is 0.05-0.01=0.04mm.

[0025] The discharge gap of the second electrode head 304 is determined by the required size of the sharp corner 116 at the part shape D104 on the part 100 , in order to avoid the electric spark increasing a large translational momentum and causing damage to the edge of the electrode head 200 , thereby affecting the control of the size of the sharp corner 116 .

[0026] In this embodiment, the sharp corner 116 of the shape 4 on the component 100 is required to be R0.015max, so the discharge gap of the second electrode head 304 is 0.01 mm.

[0027] Step 5: Processing of tool electrode 300. The overall material of tool electrode 300 is tungsten copper or chromium copper; firstly, all the dimensions of tool electrode 300 are accurately processed by precision grinding machine, and the parallelism and verticality between the surfaces are ensured; then, the processing of tool electrode 300 is completed by precision wire cutting with two cuts and six trimmings (two rough cuts and six fine trimmings); the reduction amount of the first electrode head 301 and the second electrode head 304 by precision wire cutting is equal to the corresponding discharge gap in step 4, the tolerance is controlled at 0~0.005mm, and the surface is controlled at Ra0.15~Ra0.20.

[0028] Step 6: Processing of the part 100, using a precision grinder to accurately process all the dimensions of the part 100; the grinder needs to leave a roughing allowance 117 of 0.03 mm when processing the top surface of the part 100, and the part 100 has an EDM part 118, such as Figure 7 shown.

[0029] The main purpose of leaving the allowance is to solve the problem of the edges of the part shape A101 and the part shape B102 on the part 100 being damaged during the electrospark machining process.

[0030] Step 7: Install the tool electrode 300 and the part 100 on the EDM machine table.

[0031] Step 8 (Step A): Fig.13 First, the first electrode head 301 on the tool electrode 300 is used to pre-process the part 100 vertically downward along the Z axis without translation, so that the first middle boss 106 and the first edge boss 107 are formed on the part 100, and the following is obtained: Figure 8Then, the part 100 is removed from the machine, and the first actual side margin 307 of the first middle boss 106 and the second actual side margin 308 of the first edge boss 107 are measured. According to the difference between the first actual side margin 307 of the first middle boss 106 and the first theoretical side margin, and the difference between the second actual side margin 308 of the first edge boss 107 and the second theoretical side margin, the EDM parameters are adjusted to compensate for the deviation, so that the part 100 achieves the best processing effect. This provides a guarantee for further processing quality and also avoids the scrapping of the part 100 due to different factors.

[0032] In the above embodiment, the first theoretical side margin of the first intermediate boss 106 is the projection distance of the first transition surface 112 on the Z-direction horizontal plane plus the avoidance distance of 0.015 mm between the fourth intermediate boss 115 and the first electrode head 301; the second theoretical side margin of the first edge boss 107 is the projection distance of the second transition surface 114 on the Z-direction horizontal plane.

[0033] Step 9 (Step B): Based on the optimal EDM data obtained after the EDM pre-machining in step 8, the first electrode head 301 on the tool electrode 300 is further EDMed along the Z axis vertically downward to the part 100, and at the same time, a circular translation machining method is used to machine the support bottom surface 108 of the part 100. On the basis of the first intermediate boss 106 and the first edge boss 107, a second intermediate boss 109 and a second edge boss 110 are formed on the support bottom surface 108, and the result is as follows: Fig. 9 100 shapes of parts.

[0034] Step 10 (Step C): Fig.13 and Fig.14 As shown, following step 9, the first electrode head 301 on the tool electrode 300 is subjected to spiral conical reduction electrospark machining from the bottom surface 5 on the part 100 upward along the Z axis, so that the second middle boss 109 is processed into the third middle boss 111 and the first transition surface 112, and the second edge boss 110 is processed into the third edge boss 113 and the second transition surface 114. The third middle boss 111 and the support bottom surface 108 are transitioned through the first transition surface 112, and the third edge boss 113 and the support bottom surface 108 are transitioned through the second transition surface 114, so as to obtain the following Fig.10 100 shapes of parts.

[0035] like Fig.13As shown in the figure, α is the inclination angle, β is the helix angle, H is the final EDM processing height, W is the maximum translational momentum of the EDM, △h is the EDM processing height when the helix angle β follows the inclination angle α and the spiral cone rises one circle, △w is the translational momentum of the EDM processing when the helix angle β follows the inclination angle α and the spiral cone rises one circle △h; △w is also the reduction of W, that is, △w gradually expands as △h rises and W gradually shrinks until △w=W to end the EDM processing of this section. The size of the helix angle β determines the inclination of the spiral. The smaller the helix angle β, the smaller △h and △w, the better the EDM processing effect, and the higher the shape replication accuracy and approximation. By reasonably controlling the value of the helix angle β, the ideal EDM processing effect can be achieved. As mentioned above, the current IP in the EDM processing is set to start from 0.4A and end at 0.1A, and the corresponding surface roughness is set to start from Ra0.80 and end at Ra0.16.

[0036] Step 11 (Step D): Use the second electrode head 304 on the tool electrode 300 to process vertically downward along the Z axis in a circular translation manner to the support bottom surface 108 on the part 100, process the third intermediate boss 111 into a fourth intermediate boss 115, and remove the first transition surface 112, so that a sharp angle 116 is formed between the fourth intermediate boss 115 and the support bottom surface 108, retain the third edge boss 113 and the second transition surface 114, and complete the EDM of the part shape B102 and the part shape B102 on the part 100, and obtain the following Fig.11 100 shapes of parts.

[0037] Step 12: Fig.12 As shown, the rough machining allowance 117 on the part 100 is subjected to electric spark removal machining using a planar electrode 310. The part shape A101 corresponds to the third edge boss 113, the part shape B102 corresponds to the fourth middle boss 115, the part shape C103 corresponds to the second transition surface 114, the part shape D104 corresponds to the sharp angle 116 between the fourth middle boss 115 and the supporting bottom surface 108, and the part shape E105 corresponds to the supporting bottom surface 108, thereby completing the machining of the core precision part 100 in the high-speed communication connector mold.

[0038] In terms of the tool electrode 300, the present invention separates the old electrode that can only be processed by CNC in the conventional method into two different electrode heads 200 that can be processed by wire-cutting with relatively stable processing and high precision, and combines the two electrode heads 200 together to form a tool electrode 300 with two different electrode heads 200. The advantage of this is that the tool electrode 300 can be completed by wire-cutting processing at one time, and the shape accuracy, dimensional accuracy, surface finish, shape consistency and relative position accuracy between shapes on the tool electrode 300 can be guaranteed; there is no need to replace the tool electrode 300 multiple times during electrospark processing, avoiding the processing errors and processing marks generated when two different electrode heads 200 are replaced; this also provides a strong guarantee for subsequent electrospark processing. In addition, it also saves the cost of CNC milling cutters, reduces the difficulty and cost of processing the tool electrode 300, and avoids the time waste and quality problems caused by repeated corrections of CNC and electrospark.

[0039] In terms of EDM, the present invention increases the head margin of the EDM pre-processed part 100 to obtain the optimal EDM data, thereby providing a guarantee for further processing quality. In addition, since the C-angle structure is eliminated on the first electrode head 301, the shape of the electrode head 200 is different from the shape of the processed part 100. In principle, it is impossible to process the same shape as the part 100 by EDM using the electrode head 200. However, the present invention changes the relationship between the processing feed direction and the translation and trajectory of conventional EDM, thereby realizing that the electrode head 200 with a shape that is not exactly the same as the shape of the processed part 100 can process the shape of the part 100, thus changing the conventional method that the EDM must provide an electrode head 200 with a reverse shape that is exactly the same as the shape of the part 100 in order to perform EDM.

[0040] In summary, the present invention makes part 100 feasible for batch processing and greatly improves the processing yield by changing the processing and manufacturing method of the tool electrode 300 and the electric spark processing method. The quality of part 100 is stable and there is no scrap, the precision is guaranteed, and the technical life cycle is long, which brings positive effects to the injection molding production yield and production efficiency of subsequent products. The processing of part 100 in this type of high-value-added high-speed communication connector mold has higher economic benefits and is very competitive in the industry.

[0041] In the description of the present invention, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. Under the condition that there is no contradiction, those skilled in the art may combine the features of different embodiments. The protection scope of the present invention is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present invention, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the protection scope of the present invention.

Claims

1. A method for processing precision parts in a communication connector mold, characterized in that: The following steps are involved: Step A, using a first electrode head (301) to pre-process the part (100) vertically downward along the Z axis and in a processing method without translation, so that a first middle boss (106) and a first edge boss (107) are formed on the part (100), the first electrode head (301) is provided with a first middle through hole (302) and a plurality of first edge through holes (303), the plurality of first edge through holes (303) are arranged on the peripheral side of the first middle through hole (302), the first middle boss (106) matches the first middle through hole (302), and the first edge boss (107) matches the first edge through hole (303); Step B, using the first electrode head (301) to continue vertically downward along the Z axis and use a circular translation processing method to process the support bottom surface (108) of the part (100), and forming a second middle boss (109) and a second edge boss (110) on the support bottom surface (108) based on the first middle boss (106) and the first edge boss (107); Step C, using the first electrode head (301) to perform spiral conical reduction electrospark machining from the support bottom surface (108) on the part (100) upward along the Z axis, so that the second middle boss (109) is machined into a third middle boss (111) and a first transition surface (112), and the second edge boss (110) is machined into a third edge boss (113) and a second transition surface (114), the third middle boss (111) and the support bottom surface (108) are transitioned through the first transition surface (112), and the third edge boss (113) and the support bottom surface (108) are transitioned through the second transition surface (114); Step D, using the second electrode head (304) to vertically downwardly along the Z axis and using a circular translation processing method to process to the supporting bottom surface (108) of the part (100), the third middle boss (111) is processed into a fourth middle boss (115), and the first transition surface (112) is removed, so that a sharp angle (116) is formed between the fourth middle boss (115) and the supporting bottom surface (108), and the third edge boss (113) and the second transition surface (114) are retained; the second electrode head (304) is provided with a second middle through hole (305) and a plurality of second edge through holes (306), the plurality of second edge through holes (306) are arranged on the peripheral side of the second middle through hole (305), and the size of the second edge through hole (306) is larger than the size of the second middle boss (109).

2. The method for processing precision parts in a communication connector mold according to claim 1, characterized in that: In the process of performing spiral conical reduction electrospark machining along the Z axis upward using the first electrode head (301), α is the inclination angle, β is the helix lead angle, H is the final electrospark machining height, W is the maximum translational momentum of the electrospark, △h is the electrospark machining height when the helix lead angle β follows the inclination angle α and the spiral conical rises one circle, △w is the translational momentum of the electrospark machining when the helix lead angle β follows the inclination angle α and the spiral conical rises one circle △h, △w gradually increases with the increase of △h, and W gradually decreases until △w=W, ending the electrospark machining of this section.

3. The method for processing precision parts in a communication connector mold according to claim 1, characterized in that: After the pre-machining of the part (100) is completed, the first actual side allowance (307) of the first intermediate boss (106) and the second actual side allowance (308) of the first edge boss (107) are measured, and the electrospark machining parameters are adjusted to compensate for the deviation according to the difference between the first actual side allowance (307) of the first intermediate boss (106) and the first theoretical side allowance and the difference between the second actual side allowance (308) of the first edge boss (107) and the second theoretical side allowance.

4. The method for processing precision parts in a communication connector mold according to claim 3, characterized in that: The first theoretical side margin of the first intermediate boss (106) is the projection distance of the first transition surface (112) on the Z-direction horizontal plane plus the avoidance distance between the fourth intermediate boss (115) and the first electrode head (301); the second theoretical side margin of the first edge boss (107) is the projection distance of the second transition surface (114) on the Z-direction horizontal plane.

5. The method for processing precision parts in a communication connector mold according to claim 1, characterized in that: The first electrode head (301) and the second electrode head (304) are both old electrodes.

6. The method for processing precision parts in a communication connector mold according to claim 1, characterized in that: The long side of the first electrode head (301) and the long side of the second electrode head (304) are connected to each other to form a tool electrode (300); one end of the tool electrode (300) is provided with an electrode clamping position (309).

7. The method for processing precision parts in a communication connector mold according to claim 6, characterized in that: The material of the tool electrode (300) is tungsten copper or chromium copper.

8. The method for processing precision parts in a communication connector mold according to claim 7, characterized in that: The processing method of the tool electrode (300) comprises: using a precision grinder to process all the external dimensions of the tool electrode (300) on a blank electrode, and ensuring the parallelism and verticality between the surfaces; and then using a precision wire cutting and trimming processing technique to complete the shape processing of the first electrode head (301) and the second electrode head (304).

9. The method for processing precision parts in a communication connector mold according to claim 1, characterized in that: Before pre-machining of the part (100), all the outer dimensions of the part (100) are machined by a precision grinder, and a rough machining allowance (117) is left on the machined top surface of the part (100).

10. The method for processing precision parts in a communication connector mold according to claim 9, characterized in that: After the second electrode head (304) is processed by circular translation, the rough processing residue (117) is removed by using a planar electrode (310).

Images