CN110842047A - Extrusion die machining method - Google Patents
Extrusion die machining method Download PDFInfo
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- CN110842047A CN110842047A CN201911246797.2A CN201911246797A CN110842047A CN 110842047 A CN110842047 A CN 110842047A CN 201911246797 A CN201911246797 A CN 201911246797A CN 110842047 A CN110842047 A CN 110842047A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/10—Making tools by operations not covered by a single other subclass
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Abstract
The invention discloses a processing method of an extrusion die, which comprises the following steps: s1, pretreatment; s2, CNC rough milling: comprises an upper die rough milling and a lower die rough milling; s3, heat treatment; s4, CNC finish milling: the CNC finish milling comprises upper die finish milling and lower die finish milling; s5, plane grinding; s6, grinding: the rough surface of the shunting hole is smoothly polished by abrasive paper, and the friction force between the shunting hole and the aluminum bar is reduced when the aluminum profile is extruded. S7, polishing; s8, grinding by using a tool; s9, finish turning; and S10, checking and warehousing. The processing method greatly shortens the production period of the extrusion die and improves the processing efficiency.
Description
Technical Field
The invention relates to the technical field of die production, in particular to a processing method of an extrusion die.
Background
Along with the rapid development of the industry, the application of the aluminum profile is wider and wider. The extrusion die used in the aluminum profile processing process is very important. In the existing processing technology of the extrusion die, the end face and the blank of a die working belt are processed mainly by adopting an electric spark processing method, firstly, the working belt penetrating through the end face and the back of a workpiece is roughly processed by a fast wire-feeding electric spark wire cutting processing mode, and the roughly processed working belt is also used as a positioning reference for subsequent processing; processing a pure copper tool electrode in a spark wire cutting processing mode, wherein the shape of the tool electrode is consistent with that of a groove of an extrusion die; carrying out electric spark machining on the end face of a workpiece by adopting a tool electrode, and machining a groove of an extrusion die by using the electric erosion action of pulse discharge between the tool electrode and the workpiece electrode connected on the workpiece; and finally, performing finish machining on the working belt in a machining mode of slow wire electrical discharge wire cutting. The extrusion die processed by the method has low processing efficiency, so that the processing period of the extrusion die is long.
Disclosure of Invention
The invention aims to provide a processing method of an extrusion die with short processing period aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a method of extrusion die processing, the method comprising the steps of:
s1, pretreatment: the pretreatment sequentially comprises blanking, rough turning and drilling, so that the excircle, the assembly surface, the shunting hole and the seam allowance of the upper die and the lower die are machined;
s2, CNC rough milling: the method comprises the steps of roughly milling an upper die and a lower die, roughly milling an upper blank cutter, a lower blank cutter and an upper die working belt of the upper die by the upper die roughly milling through a CNC milling machine, and drilling pin holes; roughly milling the lower die by a CNC milling machine to roughly mill a welding chamber and a rear blank cutter of the lower die and drill a pin hole;
s3, heat treatment: carrying out heat treatment on the die blank, wherein the heat treatment sequentially comprises quenching treatment and tempering treatment;
s4, CNC finish milling: the CNC finish milling comprises upper die finish milling and lower die finish milling, wherein the upper die finish milling comprises finish milling of an upper die spigot, a pin hole, an assembling surface, an upper blank cutter, a lower blank cutter and an upper die working belt; the CNC lower die finish milling comprises finish milling of a lower die spigot, a pin hole, an assembling surface and a welding chamber;
s5, plane grinding: polishing the assembly surfaces of the upper die and the lower die on a grinding machine;
s6, grinding: the rough surface of the shunting hole is smoothly polished, and the action of friction force between the shunting hole and an aluminum bar is reduced when the aluminum profile is extruded;
s7, polishing: removing all burrs of the die and trimming chamfers of the die;
s8, grinding the tool: closing the die, checking whether the upper die is matched with the lower die or not, and if not, finishing the assembly size by using the die;
s9, finish turning: integrally finish turning the outer circles and the spigot of the upper die and the lower die of the die to ensure that the concentricity of the outer circles and the spigot meets the requirement of a drawing;
s10, checking and warehousing: and (4) manually inspecting the processed die according to the drawing requirements, and packaging and warehousing the qualified die.
In addition, the invention also provides the following auxiliary technical scheme: and in the S2, a margin of 0.5mm is left on one side when the welding chamber is roughly milled.
The taper of the rear blank cutter milled in the step S2 is 4 degrees or 5 degrees.
When the upper die seam allowance, the lower die seam allowance and the upper die working belt are finely milled in the step S4, a tungsten steel cutter with the diameter of 12mm is used, the main shaft speed is 4000r/min, the feed rate is 1500-2000 mm/min, the feed rate is 0.2mm/r, and a 0.05mm allowance is left for a coarse cutter; then, the fine cutter is put in place at the main shaft speed of 4000r/min, the feeding rate of 2000mm/min and the feeding amount of 0.15 mm/r.
When the welding chamber is finely milled in the step S4, a tungsten steel cutter with the diameter of 12mm is used, and the side wall of the tungsten steel cutter is machined at the spindle speed of 3500r/min and the feed rate of 500 mm/min.
When the welding chamber is finely milled in the step S4, a round nose cutter with the diameter of 20mm is used for processing a welding R angle with the main shaft speed of 3000R/min and the feed rate of 2000 mm/min.
When the pin hole is finely milled in the step S4, a tungsten steel cutter with the diameter of 8mm is used, the main shaft speed is 4000r/min, the feed rate is 2000mm/min, the feed amount is 0.2mm/r, a 0.05mm allowance is reserved for a rough cutter, and then the main shaft speed is 4000r/min, the feed rate is 2000mm/min, and the feed amount is 0.15mm/r, so that the fine cutter is in place.
Compared with the prior art, the invention has the advantages that: the extrusion die processing method does not need to process a cavity by electric spark, has short production period, greatly improves the production efficiency, and can ensure the processing precision.
Drawings
FIG. 1 is a schematic representation of the steps of the process of the present invention.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
The invention provides a processing method of an extrusion die, which comprises the following steps:
s1, pretreatment: the pretreatment sequentially comprises blanking, rough turning and drilling, so that the excircle, the assembly surface, the shunting hole and the seam allowance of the upper die and the lower die are processed. The rough turning mainly refers to turning the outer circle, the assembly surface and the spigot of the die on a numerical control lathe or a common lathe according to the requirements of design drawings. The drilling is to adopt a machine tool to process the fabrication holes and threaded holes of the upper die and the lower die.
S2, CNC rough milling: the method comprises the steps of roughly milling an upper die and a lower die, wherein the roughly milling of the upper die is mainly to roughly mill an upper blank cutter, a lower blank cutter and an upper die working belt of the upper die on a CNC milling machine according to drawing requirements and drill pin holes; and the lower die rough milling is mainly to roughly mill a welding chamber and a rear blank cutter of the lower die on a CNC milling machine according to the drawing requirements and drill a pin hole. The CNC milling machine adopts a numerical control milling machine, and automatic milling is realized by utilizing a pre-programmed program. When a welding chamber is roughly milled, the single edge is left with a margin of 0.5mm, the taper of the rear blank cutter is 4 degrees or 5 degrees, and the damage to the section bar caused by interference in the extrusion process of the aluminum section bar can be avoided.
S3, heat treatment: and carrying out heat treatment on the die blank, wherein the heat treatment sequentially comprises quenching treatment and tempering treatment, so that the mechanical property of the die blank is improved, the residual stress is eliminated, and the cutting processability of the metal is improved.
S4, CNC finish milling: the CNC finish milling comprises upper die finish milling and lower die finish milling, wherein the upper die finish milling adopts a CNC milling machine to finish mill an upper die spigot, a pin hole, an assembly surface, an upper blank cutter, a lower blank cutter and an upper die working belt; and the CNC lower die finish milling adopts a CNC milling machine to finish mill the lower die spigot, the pin hole, the assembling surface and the welding chamber, so that the requirements of the drawing size are met.
Specifically, when the assembly surface is finely milled, a disc cutter with the diameter of 63mm is used, the rotating speed of a main shaft for fine machining is 1300r/min, the feed rate is 600mm/min, and the cutter feeding amount is 0.2 mm/r. When finish milling the spigots of the upper die and the lower die and the working belt of the upper die, a tungsten steel cutter with the diameter of 12mm is used, the main shaft speed is 4000r/min, the feed rate is 1500-2000 mm/min, the feed rate is 0.2mm/r, a 0.05mm allowance is reserved for a rough cutter, and then the finish cutter is in place with the main shaft speed of 4000r/min, the feed rate of 2000mm/min and the feed rate of 0.15 mm/r. When pin holes are finely milled, a tungsten steel cutter with the diameter of 8mm is used, the main shaft speed is 4000r/min, the feed rate is 2000mm/min, the feed rate is 0.2mm/r, a 0.05mm allowance is reserved for a coarse cutter, and then the main shaft speed is 4000r/min, the feed rate is 2000mm/min, and the feed rate is 0.15 mm/r. The finish milling upper and lower blank cutters use T-shaped cutters, the speed of a main shaft is 2500r/min, and the feed rate is 500 mm/min.
When a welding chamber is finely milled, a tungsten steel cutter with the diameter of 12mm is used, three cutters are moved to process the side wall of the welding chamber at the speed of a main shaft of 3500R/min and the feed rate of 500mm/min, and a round nose cutter with the diameter of 20mm is used, two cutters are moved to process a welding R angle at the speed of the main shaft of 3000R/min and the feed rate of 2000 mm/min. The CNC finish machining process is adopted to replace the traditional electric spark machining, so that the time is saved, the production period is greatly shortened, and the machining precision is also ensured.
S5, plane grinding: and (4) polishing the assembling surfaces of the upper die and the lower die on a grinding machine.
S6, grinding: the rough surface of the shunt hole is smoothly polished by the sand grinding head or the rubber grinding head, and the friction force between the shunt hole and the aluminum bar is reduced when the aluminum profile is extruded.
S7, polishing: removing all burrs of the die and trimming the chamfer angle of the die.
S8, grinding the tool: and (5) closing the die, checking whether the upper die is matched with the lower die, and if not, finishing the assembly size by using the die.
S9, finish turning: and integrally and finely turning the excircle and the spigot of the upper die and the lower die of the die to ensure that the concentricity of the excircle and the spigot meets the requirement of a drawing.
S10, checking and warehousing: and (4) manually inspecting the processed die according to the drawing requirements, and packaging and warehousing the qualified die.
The invention has the beneficial effects that: according to the extrusion die machining method, the CNC rough milling and the CNC finish milling are used for replacing electric spark machining, the production period is short, the production efficiency is greatly improved, and meanwhile, the machining precision can be guaranteed.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A processing method of an extrusion die is characterized by comprising the following steps: the method comprises the following steps:
s1, pretreatment: the pretreatment sequentially comprises blanking, rough turning and drilling, so that the excircle, the assembly surface, the shunting hole and the seam allowance of the upper die and the lower die are machined;
s2, CNC rough milling: the method comprises the steps of roughly milling an upper die and a lower die, roughly milling an upper blank cutter, a lower blank cutter and an upper die working belt of the upper die by the upper die roughly milling through a CNC milling machine, and drilling pin holes; roughly milling the lower die by a CNC milling machine to roughly mill a welding chamber and a rear blank cutter of the lower die and drill a pin hole;
s3, heat treatment: carrying out heat treatment on the die blank, wherein the heat treatment sequentially comprises quenching treatment and tempering treatment;
s4, CNC finish milling: the CNC finish milling comprises upper die finish milling and lower die finish milling, wherein the upper die finish milling comprises finish milling of an upper die spigot, a pin hole, an assembling surface, an upper blank cutter, a lower blank cutter and an upper die working belt; the CNC lower die finish milling comprises finish milling of a lower die spigot, a pin hole, an assembling surface and a welding chamber;
s5, plane grinding: polishing the assembly surfaces of the upper die and the lower die on a grinding machine;
s6, grinding: the rough surface of the shunting hole is smoothly polished, and the action of friction force between the shunting hole and an aluminum bar is reduced when the aluminum profile is extruded;
s7, polishing: removing all burrs of the die and trimming chamfers of the die;
s8, grinding the tool: closing the die, checking whether the upper die is matched with the lower die or not, and if not, finishing the assembly size by using the die;
s9, finish turning: integrally finish turning the outer circles and the spigot of the upper die and the lower die of the die to ensure that the concentricity of the outer circles and the spigot meets the requirement of a drawing;
s10, checking and warehousing: and (4) manually inspecting the processed die according to the drawing requirements, and packaging and warehousing the qualified die.
2. The extrusion die processing method according to claim 1, wherein: and in the S2, a margin of 0.5mm is left on one side when the welding chamber is roughly milled.
3. The extrusion die processing method according to claim 1, wherein: the taper of the rear blank cutter milled in the step S2 is 4 degrees or 5 degrees.
4. The extrusion die processing method according to claim 1, wherein: when the assembly surface is finely milled in the step S4, a disc cutter with the diameter of 63mm is used, the rotation speed of a main shaft for fine machining is 1300r/min, the feed rate is 600mm/min, and the feed rate is 0.2 mm/r.
5. The extrusion die processing method according to claim 1, wherein: when the upper die seam allowance, the lower die seam allowance and the upper die working belt are finely milled in the step S4, a tungsten steel cutter with the diameter of 12mm is used, the main shaft speed is 4000r/min, the feed rate is 1500-2000 mm/min, the feed rate is 0.2mm/r, and a 0.05mm allowance is left for a coarse cutter; then, the fine cutter is put in place at the main shaft speed of 4000r/min, the feeding rate of 2000mm/min and the feeding amount of 0.15 mm/r.
6. The extrusion die processing method according to claim 1, wherein: when the welding chamber is finely milled in the step S4, a tungsten steel cutter with the diameter of 12mm is used, and the side wall of the tungsten steel cutter is machined at the spindle speed of 3500r/min and the feed rate of 500 mm/min.
7. The extrusion die processing method according to claim 1, wherein: when the welding chamber is finely milled in the step S4, a round nose cutter with the diameter of 20mm is used for processing a welding R angle with the main shaft speed of 3000R/min and the feed rate of 2000 mm/min.
8. The extrusion die processing method according to claim 1, wherein: when the pin hole is finely milled in the step S4, a tungsten steel cutter with the diameter of 8mm is used, the main shaft speed is 4000r/min, the feed rate is 2000mm/min, the feed amount is 0.2mm/r, a 0.05mm allowance is reserved for a rough cutter, and then the main shaft speed is 4000r/min, the feed rate is 2000mm/min, and the feed amount is 0.15mm/r, so that the fine cutter is in place.
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| CN201911246797.2A CN110842047A (en) | 2019-12-09 | 2019-12-09 | Extrusion die machining method |
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| CN201911246797.2A CN110842047A (en) | 2019-12-09 | 2019-12-09 | Extrusion die machining method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702027A (en) * | 2020-05-07 | 2020-09-25 | 广东华昌铝厂有限公司 | Extrusion die and processing method thereof |
| CN111941009A (en) * | 2020-08-18 | 2020-11-17 | 江苏兴达智能制造有限公司 | Machining method of robot moving and traveling mechanism |
| CN112833015A (en) * | 2021-03-22 | 2021-05-25 | 广东美芝精密制造有限公司 | Bearing flange, compressor, refrigeration equipment and production process |
| CN113369833A (en) * | 2021-06-28 | 2021-09-10 | 宁波江丰复合材料科技有限公司 | Processing method of hot-pressing die |
| CN113399943A (en) * | 2021-06-15 | 2021-09-17 | 成都市联余精密机械有限公司 | Processing technology for solving problem of coarse seaming line of PET bottle preform |
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| JPH11123444A (en) * | 1997-10-27 | 1999-05-11 | Showa Alum Corp | Manufacture of extruding die |
| CN106584042A (en) * | 2017-02-07 | 2017-04-26 | 广东坚美铝型材厂（集团）有限公司 | Manufacturing process for extrusion die |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN108435818A (en) * | 2018-05-21 | 2018-08-24 | 佛山市顺德区惠联模具科技有限公司 | A kind of processing method of aluminium section hot-extrusion die |
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2019
- 2019-12-09 CN CN201911246797.2A patent/CN110842047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11123444A (en) * | 1997-10-27 | 1999-05-11 | Showa Alum Corp | Manufacture of extruding die |
| CN106584042A (en) * | 2017-02-07 | 2017-04-26 | 广东坚美铝型材厂（集团）有限公司 | Manufacturing process for extrusion die |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN108435818A (en) * | 2018-05-21 | 2018-08-24 | 佛山市顺德区惠联模具科技有限公司 | A kind of processing method of aluminium section hot-extrusion die |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702027A (en) * | 2020-05-07 | 2020-09-25 | 广东华昌铝厂有限公司 | Extrusion die and processing method thereof |
| CN111941009A (en) * | 2020-08-18 | 2020-11-17 | 江苏兴达智能制造有限公司 | Machining method of robot moving and traveling mechanism |
| CN112833015A (en) * | 2021-03-22 | 2021-05-25 | 广东美芝精密制造有限公司 | Bearing flange, compressor, refrigeration equipment and production process |
| CN113399943A (en) * | 2021-06-15 | 2021-09-17 | 成都市联余精密机械有限公司 | Processing technology for solving problem of coarse seaming line of PET bottle preform |
| CN113399943B (en) * | 2021-06-15 | 2022-08-26 | 成都市联余精密机械有限公司 | Processing technology for solving problem of coarse seaming line of PET bottle preform |
| CN113369833A (en) * | 2021-06-28 | 2021-09-10 | 宁波江丰复合材料科技有限公司 | Processing method of hot-pressing die |
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Application publication date: 20200228 |