CN113319543A - Manufacturing method of trimming die - Google Patents
Manufacturing method of trimming die Download PDFInfo
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- CN113319543A CN113319543A CN202110558782.0A CN202110558782A CN113319543A CN 113319543 A CN113319543 A CN 113319543A CN 202110558782 A CN202110558782 A CN 202110558782A CN 113319543 A CN113319543 A CN 113319543A
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- trimming
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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
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
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Abstract
The invention discloses a method for manufacturing an edge cutting die, which comprises the following steps: step 1: preparing a die blank according to the sizes of the upper die and the lower die of the trimming, and step 2: designing a three-dimensional shape of a pre-surfacing position according to the matching contour of the cutting edges of the upper die and the lower die on the edge cutting, and step 3: and (4) according to the three-dimensional shape of the designed pre-surfacing area, machining the pre-surfacing groove in a numerical control manner. Has the advantages that: according to the invention, the quenching strengthening process of the trimming die is replaced by a mode of bead welding high-performance alloy on the cutting edge, the die matrix is made of a material with a lower price, and the bead welding high-performance alloy on the cutting edge reduces the overall cost of the die material and avoids the annealing failure of the original quenching process under the hot forging working condition; the optimized process of the invention is to firstly build up welding and then manufacture the upper die and the lower die, thus reducing the times of build up welding and improving the efficiency, meanwhile, the cutting edge of the linear cutting has smaller size needing subsequent processing, reducing the subsequent processing amount and reducing the loss of the cutter.
Description
Technical Field
The invention relates to the technical field of die manufacturing, in particular to a method for manufacturing an edge cutting die.
Background
The trimming die is a press die for trimming the edge of the process piece to have a certain height, diameter and shape by using a die.
The existing manufacturing method of the trimming die comprises the following steps: firstly processing an upper trimming die and a lower trimming die, then reinforcing a cutting edge, wherein the reinforcing mode mainly comprises quenching, the renovating method comprises surfacing, firstly processing a groove of about 5x5mm on the position of the cutting edge by surfacing, and then surfacing, and the die manufacturing and renovating method has the following problems:
1. the strengthening mode is quenching, and the quenching tissue is easy to have annealing failure under the working condition of hot forging;
2. the die material meeting the heat treatment performance requirement is expensive, and the die cost is increased;
3. in the process of renovation, surfacing usually needs to be performed obliquely, the operation difficulty is higher, and because the surfacing bearing position is smaller and is a groove, thermal stress concentration is easy to generate, which is not beneficial to ensuring the surfacing quality;
4. manual operation is mostly adopted for bead welding of the cutting edge, the efficiency is low, the bead welding quality seriously depends on the technical level of an operator, the bead welding quality is usually uneven in layers, and the bead welding cutting edge is easy to crack and peel;
5. for automatic surfacing, inclined surfacing makes the surfacing path planning complicated, the process control difficult and is not beneficial to automation.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a trimming die.
The invention realizes the purpose through the following technical scheme:
a manufacturing method of an edge cutting die comprises the following steps:
step 1: preparing a die blank according to the sizes of the trimming upper die and the trimming lower die;
step 2: designing the three-dimensional appearance of a pre-surfacing position according to the matching contour of the cutting edges of the trimming upper die and the trimming lower die;
and step 3: according to the three-dimensional shape of the designed pre-surfacing area, machining a pre-surfacing groove in a numerical control mode;
and 4, step 4: cleaning oil stains and rust on the surface of the pre-surfacing groove;
and 5: overlaying at the position of the groove;
step 6: perforating the inside or outside of the surfacing layer;
and 7: marking a line cutting path according to the matching contour of the cutting edges of the upper die and the lower die, and writing a line cutting program;
and 8: threading the wire-cutting molybdenum wire through the wire-threading hole, and wire-cutting the upper die and the lower die;
and step 9: cutting the edge by line cutting and opening spot welding;
step 10: and (5) machining the upper die and the lower die in a numerical control manner.
Furthermore, in the step 2, according to the three-dimensional shape of the designed pre-surfacing position, the cross section of the pre-surfacing position is trapezoidal, the overlooking shape of the pre-surfacing position is annular, and the slotting boundary deviates by 5-7mm from the inner side to the outer side respectively by the cutting edge profile line of the trimming die.
Further, in step 6, the position of the through holes inside or outside the overlay layer is preferably designed to be the portion of the mold that needs to be removed by subsequent machining, so as to avoid step 9.
Further, the spot welding of the cutting edge line cutting gap in the step 9 has an effect of repairing a small gap caused by the step 6 and the step 7 in a mold in which a part of the cutting edge is not removed in subsequent processing.
Furthermore, the manufacturing method of the die is a manufacturing method of the trimming die, which firstly reinforces the local surfacing of the module by utilizing the matching characteristic of the cutting edge of the trimming die and the structural characteristics of the upper die and the lower die, then processes the upper die and the lower die by utilizing the linear cutting and finally carries out finish machining.
The invention has the beneficial effects that:
1. according to the invention, the quenching strengthening process of the trimming die is replaced by a mode of bead welding high-performance alloy on the cutting edge, the die matrix is made of a material with a lower price, and the bead welding high-performance alloy on the cutting edge reduces the overall cost of the die material and avoids the annealing failure of the original quenching process under the hot forging working condition.
2. The optimized process of the invention is to firstly build up welding and then manufacture the upper die and the lower die, thus reducing the times of build up welding and improving the efficiency, meanwhile, the cutting edge of the linear cutting has smaller size needing subsequent processing, reducing the subsequent processing amount and reducing the loss of the cutter.
3. The invention optimizes the surfacing working condition and reduces the surfacing difficulty, thereby improving the surfacing quality and stability and further facilitating the realization of automation.
4. The invention simplifies the manufacturing process and improves the manufacturing efficiency of the trimming die.
5. The cutting edge reinforcing shape prepared by the method is reasonable in stress and not easy to fall off in the edge cutting process.
Drawings
Fig. 1 is a process flow chart of a manufacturing method of an edge cutting die according to the present invention.
Detailed Description
A manufacturing method of an edge cutting die comprises the following steps:
step 1: preparing a die blank according to the sizes of the trimming upper die and the trimming lower die;
step 2: designing the three-dimensional appearance of a pre-surfacing position according to the matching contour of the cutting edges of the trimming upper die and the trimming lower die;
and step 3: according to the three-dimensional shape of the designed pre-surfacing area, machining a pre-surfacing groove in a numerical control mode;
and 4, step 4: cleaning oil stains and rust on the surface of the pre-surfacing groove;
and 5: overlaying at the position of the groove;
step 6: perforating the inside or outside of the surfacing layer;
and 7: marking a line cutting path according to the matching contour of the cutting edges of the upper die and the lower die, and writing a line cutting program;
and 8: threading the wire-cutting molybdenum wire through the wire-threading hole, and wire-cutting the upper die and the lower die;
and step 9: cutting the edge by line cutting and opening spot welding;
step 10: and (5) machining the upper die and the lower die in a numerical control manner.
Preferably, in the step 2, the three-dimensional shape of the pre-surfacing position is designed, the cross section of the pre-surfacing position is trapezoidal, the overlooking shape of the pre-surfacing position is annular, and the slotting boundary deviates by 5-7mm from the inner side to the outer side respectively by using the cutting edge profile line of the trimming die.
Preferably, the position of the through holes punched inside or outside the overlay in step 6 is preferably designed in the portion of the mold that needs to be removed by subsequent machining, so as to avoid step 9.
Preferably, the spot welding of the edge linear cutting gap in the step 9 is used for repairing a micro gap caused by the step 6 and the step 7 in a mold which is not subjected to subsequent processing and does not remove a part of the edges.
Preferably, the die manufacturing method is a trimming die manufacturing method which firstly reinforces the local surfacing of the module by utilizing the matching characteristic of the cutting edge of the trimming die and the structural characteristics of the upper die and the lower die, then processes the upper die and the lower die by utilizing the linear cutting and finally carries out finish machining.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The manufacturing method of the trimming die is characterized by comprising the following steps: it comprises the following steps:
step 1: preparing a die blank according to the sizes of the trimming upper die and the trimming lower die;
step 2: designing the three-dimensional appearance of a pre-surfacing position according to the matching contour of the cutting edges of the trimming upper die and the trimming lower die;
and step 3: according to the three-dimensional shape of the designed pre-surfacing area, machining a pre-surfacing groove in a numerical control mode;
and 4, step 4: cleaning oil stains and rust on the surface of the pre-surfacing groove;
and 5: overlaying at the position of the groove;
step 6: perforating the inside or outside of the surfacing layer;
and 7: marking a line cutting path according to the matching contour of the cutting edges of the upper die and the lower die, and writing a line cutting program;
and 8: threading the wire-cutting molybdenum wire through the wire-threading hole, and wire-cutting the upper die and the lower die;
and step 9: cutting the edge by line cutting and opening spot welding;
step 10: and (5) machining the upper die and the lower die in a numerical control manner.
2. The method of manufacturing a trimming die according to claim 1, wherein: in the step 2, according to the three-dimensional shape of the designed pre-surfacing position, the cross section of the pre-surfacing position is trapezoidal, the overlooking shape of the pre-surfacing position is annular, and the slotting boundary deviates by 5-7mm from the inner side to the outer side respectively by using the cutting edge profile line of the trimming die.
3. The method of manufacturing a trimming die according to claim 1, wherein: the positions of the through holes punched inside or outside the overlay layer in the step 6 are preferably designed in the parts of the die which need to be removed by subsequent processing, so as to avoid the step 9.
4. The method of manufacturing a trimming die according to claim 1, wherein: and (3) spot welding the cutting edge line cutting gaps in the step (9) has the function of repairing the micro gaps caused by the step (6) and the step (7) for the die which is not partially cut off in the subsequent processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110558782.0A CN113319543B (en) | 2021-05-21 | 2021-05-21 | Manufacturing method of trimming die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110558782.0A CN113319543B (en) | 2021-05-21 | 2021-05-21 | Manufacturing method of trimming die |
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| CN113319543A true CN113319543A (en) | 2021-08-31 |
| CN113319543B CN113319543B (en) | 2022-08-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688933A (en) * | 2012-06-19 | 2012-09-26 | 无锡鼎宇机械科技有限公司 | Trimming die and preparation method thereof |
| CN103659207A (en) * | 2013-12-23 | 2014-03-26 | 上海爱知锻造有限公司 | Technology for manufacturing edge trimming die of crankshaft forge piece |
| CN107030241A (en) * | 2017-04-28 | 2017-08-11 | 西北有色金属研究院 | A kind of swager mould and its manufacture method |
| CN109623302A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | The manufacturing method of big blade edger |
-
2021
- 2021-05-21 CN CN202110558782.0A patent/CN113319543B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688933A (en) * | 2012-06-19 | 2012-09-26 | 无锡鼎宇机械科技有限公司 | Trimming die and preparation method thereof |
| CN103659207A (en) * | 2013-12-23 | 2014-03-26 | 上海爱知锻造有限公司 | Technology for manufacturing edge trimming die of crankshaft forge piece |
| CN107030241A (en) * | 2017-04-28 | 2017-08-11 | 西北有色金属研究院 | A kind of swager mould and its manufacture method |
| CN109623302A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | The manufacturing method of big blade edger |
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| CN113319543B (en) | 2022-08-12 |
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