CN110640410A - Processing method of annular concave grain insert of injection mold - Google Patents
Processing method of annular concave grain insert of injection mold Download PDFInfo
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- CN110640410A CN110640410A CN201910585432.6A CN201910585432A CN110640410A CN 110640410 A CN110640410 A CN 110640410A CN 201910585432 A CN201910585432 A CN 201910585432A CN 110640410 A CN110640410 A CN 110640410A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/007—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass injection moulding tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/12—Forming parts of complementary shape, e.g. punch-and-die
Abstract
The processing method of the annular concave grain insert of the injection mold comprises the following processing steps: firstly, sawing a wool material; ②, grinding the refined material; thirdly, processing a positioning hole; fourthly, assembling; fifthly, processing allowance; sixthly, processing and forming coarse holes; seventhly, making an electrode; discharging; ninthly, processing the annular concave line insert. The fine material of the 0.3mm surplus allowance of length and width is processed earlier, with two fine materials through locating pin positioning after together, process the surplus allowance of going on together again, make two locating pin hole fine materials terminal surfaces reach unanimity all around, it bumps several reference surfaces and reaches unanimity, and after the processing obtains the net size fine material, the thick hole is processed and opened to the reassembling together, and insert through annular burr electrode and open the thick hole, utilize the mode of discharging in the spark machine, make and open the thick hole inner wall and process out annular concave line, obtain annular concave line fine material, the processing together of assembly, avoid appearing annular concave line dislocation, the machining precision is high.
Description
Technical Field
The invention relates to a processing method of an annular concave grain insert of an injection mold.
Background
When an injection mold produces a plastic part, if a connecting pipe or a connecting column structure is arranged on the plastic part, and a plurality of annular convex grains are arranged on the outer wall of the connecting pipe or the connecting column, an upper insert and a lower insert of the connecting pipe are required to be arranged in the mold, holes are formed in the upper insert and the lower insert, and corresponding annular concave grains are arranged on the inner wall of each hole. The upper and lower insert of traditional mould processing, when inserting, insert and separate the independent processing with inserting down on will generally, go up the concave line of insert processing multichannel semicircular promptly, insert the concave line of processing multichannel semicircular down, form the concave line of multichannel whole ring shape with two pieces of assemblies together again, if the machining precision has the deviation slightly, just can lead to the concave line of last semicircular and the concave line dislocation of lower semicircular, the annular burr of the takeover outer wall of injection moulding working of plastics can also misplace like this, thereby influence the assembly and influence the pleasing to the eye of appearance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for processing an annular concave grain insert of an injection mold, which avoids the dislocation of annular concave grains, has high processing precision and is convenient to process.
The technical scheme of the processing method of the annular concave grain insert of the injection mold is as follows: the method comprises the following processing steps:
firstly, sawing a wool material: sawing the steel into two pieces of steel wool by using a sawing machine;
② grinding the refined materials: taking two sawn steel blanks, and grinding the two steel blanks to the length of 59.3mm, the width of 78.3mm and the height of 42mm by adopting a grinding machine respectively to obtain two refined materials (1) with the surplus of 0.3mm in length and width;
processing positioning holes: adopting a middle wire-moving linear cutting machine tool, carrying out four-side centering and taking, and respectively processing two positioning holes on the two concentrates to obtain two concentrates with positioning pin holes;
fourthly, assembling: inserting a positioning pin into the two positioning holes with the positioning pin hole fine material to assemble the positioning pins together;
fifthly, machining allowance: machining the allowance of the front, rear, left and right surfaces of the assembled two pieces of fine materials with the positioning pin holes by adopting a grinding machine, and grinding the allowance to obtain a net-size fine material (5);
sixthly, processing and opening coarse holes: a fast wire-moving linear cutting machine tool is adopted, and the net-size fine material is processed into a coarse hole (6), so that the fine material with the coarse hole is obtained;
and (c) making an electrode: a piece of copper material is taken by a lathe, the copper material is processed into a shape corresponding to the shape of the open coarse hole, the outer diameter of the copper material is 0.5mm smaller than the inner diameter of the open coarse hole, and then the outer wall of the copper material is processed with annular convex patterns to obtain annular convex pattern electrodes;
and discharging: placing the annular convex pattern electrode into a rough hole of the rough hole-opened fine material, placing the rough hole-opened fine material and the annular convex pattern electrode into a spark machine together for discharging, processing annular concave patterns on the inner wall of the rough hole, and taking out the annular convex pattern electrode to obtain annular concave pattern fine material;
ninthly, processing an annular concave line insert: and (3) taking out the positioning pin to separate the two annular concave grain refined materials, processing a first fixing hole, a first arc corner, a first side groove and a first rear arc surface on the first annular concave grain refined material by adopting a lathe to obtain a first annular concave grain insert, and processing a second fixing hole, a second arc corner, a second side groove, a second rear inclined surface and a reinforcing rib groove on the second annular concave grain refined material to obtain a second annular concave grain insert.
The invention discloses a processing method of an injection mold annular concave grain insert, which comprises the steps of sawing two steel blanks with specified shapes by a sawing machine, polishing the two steel blanks by a grinding machine to form refined materials with the lengths of 59.3mm, the widths of 78.3mm and the heights of 42mm, wherein the length and the width of the refined materials have the allowance of 0.3mm (the length is 0.3mm more, the left end surface is 0.15mm more, the right end surface is 0.15mm more, the width is 0.3mm more, the front end surface is 0.15mm more and the rear end surface is 0.15mm more), respectively processing two up-and-down through positioning holes on the two refined materials by a middle-running wire cutting machine tool in a four-side-division counting mode (the specific mode of four-side-division counting is the prior art) to obtain the refined materials with positioning pin holes, superposing the two refined materials with the positioning pin holes up and down, inserting positioning pins into the two refined materials with the positioning pin holes corresponding to each other, assembling two fine materials with positioning pin holes together, placing the assembly into a grinding machine, polishing the left and right end faces and the excess of the front and rear end faces of the two fine materials with positioning pin holes by the grinding machine (i.e. polishing the left end face to remove 0.15mm of the excess, polishing the right end face to remove 0.15mm of the excess, polishing the front end face to remove 0.15mm of the excess, polishing the rear end face to remove 0.15mm of the excess), obtaining a net size fine material, placing the net size fine material into a fast wire cutting machine, machining the middle part of the net size fine material to obtain a fine material with a rough hole, meanwhile, placing a copper material on the machine to be machined, machining the copper material to be consistent with the shape of the rough hole and the outer diameter of the copper material to be less than 0.5mm of the inner diameter of the rough hole, machining annular convex patterns on the outer wall of the copper material to obtain annular convex pattern electrodes, placing the annular convex pattern electrodes into the rough hole, placing the fine material and the annular convex patterns electrodes together to discharge, the method comprises the steps of enabling the inner wall of a rough hole to be machined to form annular concave grains, then taking out an annular convex grain electrode to obtain annular concave grain refined material, finally taking out a positioning pin, enabling the two annular concave grain refined materials to be separated, respectively machining the two annular concave grain refined materials, adopting a lathe to machine a first fixing hole, a first circular arc corner, a first side groove and a first rear circular arc surface on the first annular concave grain refined material to obtain a first annular concave grain insert, machining a second fixing hole, a second circular arc corner, a second side groove, a second rear inclined surface and a reinforcing rib groove on the second annular concave grain refined material to obtain a second annular concave grain insert. According to the processing method of the annular concave grain insert of the injection mold, because deviation of processing precision still exists when the fine material is processed, the fine material with the allowance of 0.3mm more in length and width is processed firstly, the two fine materials are assembled and positioned together through the positioning pins and then the extra allowance is processed together, the front end face, the rear end face, the left end face, the right end face and the front end face of the fine material of the two positioning pin holes are consistent, the accurate surfaces of the fine materials of the two positioning pin holes are consistent, the fine materials of the net size are processed and then assembled together to process the rough hole, the rough hole is inserted into the rough hole through the annular convex line electrode, the annular concave grain is processed on the inner wall of the rough hole by utilizing a discharging mode in a spark machine, the annular concave grain fine material is obtained and is assembled together for processing, dislocation of the annular concave grain is avoided, the processing precision is high, in addition, the first fixing hole and the first arc corner are separately processed subsequently by, When structures such as the first side groove, the first rear arc surface, the second fixing hole, the second arc corner, the second side groove, the second rear inclined plane and the reinforcing rib groove are machined, the first side groove, the second rear arc surface, the second rear arc corner, the second side groove, the second rear inclined plane and the reinforcing rib groove can be accurately positioned after being reassembled.
Drawings
FIG. 1 is a schematic perspective view of a concentrate;
FIG. 2 is a schematic perspective view of a fine material with registration pin holes;
FIG. 3 is a perspective view showing an assembled state in which two pieces of fine material with positioning pin holes are inserted into positioning pins after being stacked up and down;
FIG. 4 is a schematic perspective view of a net size concentrate;
FIG. 5 is a schematic perspective view of a coarse feed;
FIG. 6 is a perspective view of an annular relief electrode;
FIG. 7 is a schematic perspective view of an annular dimpled grain finish;
FIG. 8 is a front perspective view of the first and second annular valley inserts in an exploded condition;
FIG. 9 is a rear perspective view of the first and second annular valley inserts in an exploded condition.
Detailed Description
The invention relates to a processing method of an annular concave grain insert of an injection mold, which comprises the following processing steps as shown in figures 1-9:
firstly, sawing a wool material: sawing the steel into two pieces of steel wool by using a sawing machine;
② grinding the refined materials: taking two sawn steel blanks, and grinding the two steel blanks to the length of 59.3mm, the width of 78.3mm and the height of 42mm by adopting a grinding machine respectively to obtain two refined materials 1 with the surplus of 0.3mm in length and width, wherein the refined materials 1 with the surplus of 0.15mm are arranged on the front, the rear, the left and the right sides;
processing positioning holes: adopting a middle-speed wire cutting machine tool, carrying out four-side centering and taking, and respectively processing two positioning holes 2 on the two concentrates to obtain two concentrates 3 with positioning pin holes;
fourthly, assembling: stacking two fine materials 3 with positioning pin holes up and down, inserting positioning pins 4 into the positioning holes of the fine materials of the upper and lower positioning pin holes, and assembling the fine materials together;
fifthly, machining allowance: machining the allowance of the front, rear, left and right surfaces of the assembled two pieces of fine material with the positioning pin holes by adopting a grinding machine, and grinding the allowance to obtain a net-size fine material 5;
sixthly, processing and opening coarse holes: a fast wire-moving linear cutting machine tool is adopted, and a net-size concentrate 5 is processed into a rough hole (6) to obtain a concentrate 7 with the rough hole;
and (c) making an electrode: a piece of copper material is taken by a lathe, the copper material is processed into a shape corresponding to the shape of the rough hole 6, the outer diameter of the copper material is 0.5mm smaller than the inner diameter of the rough hole, and then the outer wall of the copper material is processed into an annular convex pattern (8) to obtain an annular convex pattern electrode 9;
and discharging: placing an annular convex pattern electrode 9 into a rough hole 6 of a rough hole opening fine material 7, placing the rough hole opening fine material and the annular convex pattern electrode into a spark machine together for discharging, processing annular concave patterns 10 on the inner wall of the rough hole, and taking out the annular convex pattern electrode to obtain an annular concave pattern fine material 11;
ninthly, processing an annular concave line insert: taking out the positioning pin 4 to separate the two ring-shaped dimpled grain concentrates 11, processing a first fixing hole 13, a first arc corner 14, a first side groove 15 and a first rear arc surface 16 on the first ring-shaped dimpled grain concentrate by adopting a lathe to obtain a first ring-shaped dimpled grain insert 17, and processing a second fixing hole 18, a second arc corner 19, a second side groove 20, a second rear inclined surface 21 and a reinforcing rib groove 22 on the second ring-shaped dimpled grain concentrate to obtain a second ring-shaped dimpled grain insert 23.
The invention relates to a processing method of an annular dimpled grain insert of an injection mold, which comprises the steps of sawing two steel blanks with specified shapes by a sawing machine, polishing the two steel blanks by a grinding machine to form a refined material 1 with the length of 59.3mm, the width of 78.3mm and the height of 42mm, wherein the length and the width of the refined material have the allowance of 0.3mm (the length is 0.3mm more, the left end surface is 0.15mm more, the right end surface is 0.15mm more, the width is 0.3mm more, the front end surface is 0.15mm more and the rear end surface is 0.15mm more), respectively processing two positioning holes 2 which are penetrated up and down by a middle-running wire cutting machine tool in a four-side-dividing and counting mode (the specific mode of four-side-dividing and counting is the prior art) to obtain two refined materials 3 with positioning holes, superposing the two refined materials 3 with the positioning holes up and down, inserting positioning pins 4 at the moment, assembling two fine materials with positioning pin holes together, placing the assembly into a grinding machine, polishing the left end surface, the right end surface and the excess of the front end surface and the rear end surface of the two fine materials with positioning pin holes 3 by the grinding machine (namely polishing 0.15mm of the excess of the left end surface, polishing 0.15mm of the excess of the right end surface, polishing 0.15mm of the excess of the front end surface and polishing 0.15mm of the excess of the rear end surface) to obtain a net-size fine material 5, placing the net-size fine material into a fast wire cutting machine, machining a rough hole 6 in the middle of the net-size fine material to obtain a fine material with an open rough hole 7, meanwhile, placing a copper material on the lathe for machining, machining the copper material to be consistent with the shape of the open rough hole and the outer diameter of the copper material to be less than 0.5mm of the inner diameter of the open rough hole, machining an annular convex grain 8 on the outer wall of the copper material to obtain an annular convex grain 9, placing the annular convex grain electrode into the open rough hole 6, and placing the fine material 7 and the annular convex grain 9 into a spark machine for discharging, the method comprises the steps of machining annular concave grains 10 on the inner wall of a rough hole, taking out annular convex grain electrodes 9 to obtain annular concave grain refined materials 11, finally taking out positioning pins 4 to separate the two annular concave grain refined materials, respectively machining the two annular concave grain refined materials, machining a first fixing hole 13, a first arc corner 14, a first side groove 15 and a first rear arc surface 16 on the first annular concave grain refined materials by adopting a lathe to obtain a first annular concave grain insert 17, machining a second fixing hole 18, a second arc corner 19, a second side groove 20, a second rear inclined surface 21 and a reinforcing rib groove 22 on the second annular concave grain refined materials to obtain a second annular concave grain insert 23. According to the processing method of the annular concave grain insert of the injection mold, because deviation of processing precision still exists when processing the fine material, the fine material 1 with the allowance of 0.3mm more in length and width is processed firstly, the two fine materials are assembled and positioned together through the positioning pin 4, the extra allowance is processed together, the front end face, the rear end face, the left end face, the right end face and the front end face of the two positioning pin hole fine materials 3 are consistent, the collision number of the fine materials is consistent, the fine materials 5 with the net size are obtained after processing, the fine materials are assembled together to process the rough hole 6, the rough hole is inserted through the annular convex line electrode 9, annular concave grains are processed on the inner wall of the rough hole by utilizing a discharging mode in a spark machine, the annular concave grain fine material 11 is obtained, the annular concave grain fine materials are assembled together for processing, the dislocation of the annular concave grains is avoided, the processing precision is high, in addition, the first fixing hole 13 is separately processed subsequently and separately for the, When the structures such as the first arc corner 14, the first side groove 15, the first rear arc surface 16, the second fixing hole 18, the second arc corner 19, the second side groove 20, the second rear inclined surface 21, the reinforcing rib groove 22 and the like are processed, the first arc corner and the second side groove can be accurately positioned after being reassembled.
Claims (1)
1. The processing method of the annular concave grain insert of the injection mold is characterized by comprising the following steps of: the method comprises the following processing steps:
firstly, sawing a wool material: sawing the steel into two pieces of steel wool by using a sawing machine;
② grinding the refined materials: taking two sawn steel blanks, and grinding the two steel blanks to the length of 59.3mm, the width of 78.3mm and the height of 42mm by adopting a grinding machine to obtain two refined materials (1) with the allowance of 0.3mm in length and width, wherein the refined materials (1) with the allowance of 0.15mm are arranged on the front, the rear, the left and the right sides;
processing positioning holes: adopting a middle-speed wire cutting machine tool to perform four-side centering and taking, and respectively processing two positioning holes (2) on the two concentrates to obtain two concentrates (3) with positioning pin holes;
fourthly, assembling: superposing two fine materials (3) with positioning pin holes up and down, inserting positioning pins (4) into the positioning holes of the fine materials of the upper and lower positioning pin holes, and assembling the fine materials together;
fifthly, machining allowance: machining the allowance of the front, rear, left and right surfaces of the assembled two pieces of fine materials with the positioning pin holes by adopting a grinding machine, and grinding the allowance to obtain a net-size fine material (5);
sixthly, processing and opening coarse holes: a fast wire-moving linear cutting machine tool is adopted, and the net-size concentrate (5) is processed into a rough hole (6), so that a concentrate (7) with the rough hole is obtained;
and (c) making an electrode: a copper material is taken by a lathe, the copper material is processed into a shape corresponding to the shape of the rough hole (6), the outer diameter of the copper material is smaller than the inner diameter of the rough hole by 0.5mm, and then the outer wall of the copper material is processed into an annular convex pattern (8) to obtain an annular convex pattern electrode (9);
and discharging: putting the annular convex pattern electrode (9) into the rough hole (6) of the rough hole fine material (7), putting the rough hole fine material and the annular convex pattern electrode into a spark machine together for discharging, processing annular concave patterns (10) on the inner wall of the rough hole, and taking out the annular convex pattern electrode to obtain an annular concave pattern fine material (11);
ninthly, processing an annular concave line insert: taking out the positioning pin (4), separating the two annular concave grain refined materials (11), processing a first fixing hole (13), a first arc corner (14), a first side groove (15) and a first rear arc surface (16) on the first annular concave grain refined material by adopting a lathe to obtain a first annular concave grain insert (17), and processing a second fixing hole (18), a second arc corner (19), a second side groove (20), a second rear inclined surface (21) and a reinforcing rib groove (22) on the second annular concave grain refined material to obtain a second annular concave grain insert (23).
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| CN201910585432.6A CN110640410A (en) | 2019-07-01 | 2019-07-01 | Processing method of annular concave grain insert of injection mold |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496681A (en) * | 2020-11-19 | 2021-03-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Semi-ring matching part combination machining method |
| CN113751968A (en) * | 2021-09-07 | 2021-12-07 | 广东同正精密模具有限公司 | Die insert machining method for constructing machining reference by using atomic ash |
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| CN113751968A (en) * | 2021-09-07 | 2021-12-07 | 广东同正精密模具有限公司 | Die insert machining method for constructing machining reference by using atomic ash |
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