CN102729020A - Method for machining cutter and dedicated mold - Google Patents
Method for machining cutter and dedicated mold Download PDFInfo
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- CN102729020A CN102729020A CN2012102301841A CN201210230184A CN102729020A CN 102729020 A CN102729020 A CN 102729020A CN 2012102301841 A CN2012102301841 A CN 2012102301841A CN 201210230184 A CN201210230184 A CN 201210230184A CN 102729020 A CN102729020 A CN 102729020A
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Abstract
The invention discloses a method for machining a cutter. The machining method comprises the following steps: heating a section of high-speed tool steel bar stock of which the diameter is equivalent to that of the rod part of a molded cutter to the temperature suitable for forging, placing the section of the high-speed tool steel bar stock into a dedicated mold cavity which has the same shape with the molded cutter for forging, demoulding the high-speed tool steel bar stock after molding, and further performing finish-milling and finish-grinding on the molded cutter. The invention also provides a dedicated mold used in the machining method. The dedicated mold consists of an upper mold, a lower mold and a mold sleeve, wherein the upper mold is cylindrical; the mold cavity of the lower mold is in the same shape with the main body of the molded cutter, and the lower mold is in the shape of a cone which is small at the top and large at the bottom; the inner wall of the mold sleeve is in clearance fit with the outer walls of the upper mold and the lower mold; the upper mold can slide up and down freely at the upper section of the mold sleeve. The method is suitable for machining various metal cutting tools. By adopting the method, the consumption of the bar stock is low, the milling and grinding workload is little, the rate of finished products is high, the quality of the molded cutter is better, and the service life of the mold cutter is longer; the dedicated mold is simple in structure, work piece is easily formed when in forging, moreover, the distribution of stress is uniform, and the withdrawal from the mold is convenient.
Description
Technical field
The present invention relates to a kind of processing method of metal cutting tool, relate to the forge die of a kind of forge die, particularly cutter simultaneously.
Background technology
At present, the processing method of metal cutting tool is that the high-speed tool steel bar is passed through the turnning and milling grinding earlier, makes it become design shape, passes through Quenching Treatment then, carries out the accurate grinding moulding at last.Usually, one needs the bar doubly measured with 1.5-2.2 to the cutter that is shaped, car, mill, mill, Quenching Treatment be also more used man-hour, also produces waste product in the Quenching Treatment unavoidably, therefore, overall processing cost is higher, working (machining) efficiency is low.In addition, because the carbide rank of existing high-speed tool steel bar is that the surface is good, core is poor; Densification the closer to the more too late surface of the metal grain of core; And in the forming process of cutter, car, what mill, grind away is bar near the fine and close part of outside carbide, and the blade tip position that stays as cutter tooth but is the relatively poor part of carbide rank; And; Car, mill, chip area that grinding goes out also caused the inhomogeneous of cutter bulk strength, and is therefore, crooked easily by the molding cutter of prior art processing, collapse tooth, fracture.
Summary of the invention
The objective of the invention is to overcome existing existing above-mentioned deficiency of tooling cost and defective, propose a kind of new method that can reduce cost and can process the high-quality cutter, employed particular manufacturing craft in this cutter machining method is provided simultaneously.
The technical scheme that realizes above-mentioned purpose is:
A kind of processing method of cutter; The high-speed tool steel bar that one section diameter is suitable with molding cutter bar portion diameter is heated to the temperature that is fit to forging; Put into the particular manufacturing craft die cavity identical with said molding cutter profile and forge and press, finish-milling, correct grinding processed are done in the back demoulding that is shaped again.
Employed particular manufacturing craft in a kind of said method is made up of upper die and lower die and die sleeve, and last die topography is cylindrical, and last model cavity is up-small and down-big taper shape, and tapering is 2 °～5 °; The counterdie die cavity is identical with the main body profile of molding cutter, and following die topography is up-small and down-big taper shape, and tapering is 2 °～5 °, the outer wall matched in clearance of die sleeve inwall and upper die and lower die, and last model cavity is communicated with steam vent, and patrix can freely slide up and down at the die sleeve epimere.
The said preferred tapering of going up the model cavity hypomere is 3 °.
The preferred tapering of said counterdie die cavity is 3 °.
Said counterdie is vertical five equilibrium three lobe modules.
The inventive method is fit to for example tapered shank cutter, taper shank bacterium shape milling cutter and the first-class processing of taper shank drill of processing, particularly some special tools of various metal cutting tools, and the bar consumption is no more than 1.1 times of molding cutter; Reduced car before being shaped, milled, grinding process, the processing capacity after the moulding seldom reduced production cost significantly; Improved yield rate; Be to eliminate defectives such as the bubble that exists in the former bar, crackle in the forging and pressing process more significantly, the density of each position metal grain of molding cutter is consistent, even hardness; Better quality, the life-span is longer.As employed particular manufacturing craft in the inventive method, its simple structure, the workpiece convenient fixing, easy shaping of workpiece and stress distribution are even during forging and pressing, and three lobe modular counterdies are very convenient when moving back mould.
Description of drawings
Fig. 1 is the unitary construction generalized section of one embodiment of the invention.
Fig. 2 is the die sleeve half-sectional view.
Fig. 3 is the patrix partial sectional view.
Fig. 4 is the whole vertical view of counterdie.
Fig. 5 is the schematic perspective view of one of counterdie three lobe modules.
Among the figure: 1. patrix, 2. die sleeve, 3. counterdie, 4. steam vent is 5. gone up model cavity, 6. the counterdie die cavity.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described further.
A kind of processing method of pinion cutter; One section high-speed tool steel bar of intercepting; The volume of this section high-speed tool steel bar is greater than the 3-5% that desires machine-shaping pinion cutter volume, and its diameter is suitable with this shear speed gear cutting knife bar portion diameter, and it is heated to the temperature that is fit to forging in high temperature furnace; Put into the particular manufacturing craft die cavity identical then and forge and press, again it is done after the demoulding and mill, grind processed with this finished product pinion cutter profile.
Said method is fit to the processing of various metal cutting tools, just the die cavity of particular manufacturing craft, model difference.
Shown in Fig. 1-5, employed particular manufacturing craft is made up of patrix 1, counterdie 2 and die sleeve 3 in the inventive method.The profile of patrix 1 is cylindrical, and last model cavity 5 is up-small and down-big taper shape, and tapering is 3 °, also can be arbitrarily angled in 2 °～5 °; Counterdie die cavity 6 is identical with the main body profile of molding cutter, and its profile is up-small and down-big taper shape, and tapering is 3 °, also can be arbitrarily angled in 2 °～5 °; The inwall of die sleeve 3 and patrix 1 are communicated with steam vent 4 with the outer wall matched in clearance of touching 2 down, last model cavity 5, and patrix 1 can freely slide up and down at die sleeve 3 epimeres.The easy suit of this mould with move back mould; Patrix can move down easily during forging and pressing, and thick slightly workpiece is in the process of forging, and counterdie moves on gradually; Thin slightly workpiece is in the process of forging; Workpiece is by jumping-up, slightly slightly or thin slightly workpiece in the process of forging, all be full of die cavity easily, be swaged to required size.
In the present embodiment, counterdie 2 is vertical five equilibrium three lobe modules, and promptly counterdie 2 is made up of three identical lobe modules as shown in Figure 5, and it is very convenient to move back mould.
Claims (6)
1. the processing method of a cutter; It is characterized in that: the high-speed tool steel bar that one section diameter is suitable with molding cutter bar portion diameter is heated to the temperature that is fit to forging; Putting into the particular manufacturing craft die cavity identical with said molding cutter profile forges and presses; Finish-milling, correct grinding processed are done in the demoulding after being shaped again.
2. employed particular manufacturing craft in the processing method of cutter according to claim 1, it is characterized in that: be made up of upper die and lower die and die sleeve, last die topography is cylindrical, and last model cavity is up-small and down-big taper shape, tapering is 2 °～5 °; The counterdie die cavity is identical with the main body profile of molding cutter, and following die topography is up-small and down-big taper shape, and tapering is 2 °～5 °, the outer wall matched in clearance of die sleeve inwall and upper die and lower die, and last model cavity is communicated with steam vent, and patrix can freely slide up and down at the die sleeve epimere.
3. according to the described particular manufacturing craft of claim 2, it is characterized in that: the said tapering of going up the model cavity hypomere is 3 °.
4. according to claim 2 or 3 described particular manufacturing crafts, it is characterized in that: the tapering of said counterdie die cavity is 3 °.
5. according to claim 2 or 3 described particular manufacturing crafts, it is characterized in that: said counterdie is vertical five equilibrium three lobe modules.
6. according to the described particular manufacturing craft of claim 4, it is characterized in that: said counterdie is vertical five equilibrium three lobe modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102301841A CN102729020A (en) | 2012-07-02 | 2012-07-02 | Method for machining cutter and dedicated mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102301841A CN102729020A (en) | 2012-07-02 | 2012-07-02 | Method for machining cutter and dedicated mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102729020A true CN102729020A (en) | 2012-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102301841A Pending CN102729020A (en) | 2012-07-02 | 2012-07-02 | Method for machining cutter and dedicated mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN102729020A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909298A (en) * | 2012-10-22 | 2013-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN104668923A (en) * | 2015-02-05 | 2015-06-03 | 深圳市誉和钻石工具有限公司 | Manufacturing method of diamond cutter |
| CN105149493A (en) * | 2015-10-28 | 2015-12-16 | 董丁法 | Die for manufacturing knife edge of hacking knife |
| CN114589284A (en) * | 2022-05-10 | 2022-06-07 | 中北大学 | One-fire cogging die and method for alloy bar and upsetting-extruding-upsetting large deformation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147735A (en) * | 1983-02-14 | 1984-08-24 | Masuji Ogawa | Die for cold forging |
| JPS6146338A (en) * | 1984-08-11 | 1986-03-06 | Ito Choko Kk | Segment assembly type press die |
| CN1173417A (en) * | 1997-04-01 | 1998-02-18 | 冶金工业部第一地质勘查局超硬材料研究所 | Method for die forging superhard cutter |
| JP2003170478A (en) * | 2001-12-07 | 2003-06-17 | Sanalloy Industry Co Ltd | Mold having porous structure |
| CN2761310Y (en) * | 2005-01-20 | 2006-03-01 | 洛阳轴承集团有限公司 | Cold-heading die for processing extra large angle taper roller |
| KR20070106202A (en) * | 2006-04-28 | 2007-11-01 | 태양금속공업주식회사 | Mold for cold forging |
-
2012
- 2012-07-02 CN CN2012102301841A patent/CN102729020A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147735A (en) * | 1983-02-14 | 1984-08-24 | Masuji Ogawa | Die for cold forging |
| JPS6146338A (en) * | 1984-08-11 | 1986-03-06 | Ito Choko Kk | Segment assembly type press die |
| CN1173417A (en) * | 1997-04-01 | 1998-02-18 | 冶金工业部第一地质勘查局超硬材料研究所 | Method for die forging superhard cutter |
| JP2003170478A (en) * | 2001-12-07 | 2003-06-17 | Sanalloy Industry Co Ltd | Mold having porous structure |
| CN2761310Y (en) * | 2005-01-20 | 2006-03-01 | 洛阳轴承集团有限公司 | Cold-heading die for processing extra large angle taper roller |
| KR20070106202A (en) * | 2006-04-28 | 2007-11-01 | 태양금속공업주식회사 | Mold for cold forging |
Non-Patent Citations (1)
| Title |
|---|
| 冯澎: "W6Mo5Cr4V2插齿刀毛坯的胎模锻造", 《工具技术》, vol. 43, no. 01, 20 January 2009 (2009-01-20) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909298A (en) * | 2012-10-22 | 2013-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN102909298B (en) * | 2012-10-22 | 2014-12-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming method of forge piece with large torsional flange and spacer flange as well as forming mold |
| CN104668923A (en) * | 2015-02-05 | 2015-06-03 | 深圳市誉和钻石工具有限公司 | Manufacturing method of diamond cutter |
| CN105149493A (en) * | 2015-10-28 | 2015-12-16 | 董丁法 | Die for manufacturing knife edge of hacking knife |
| CN114589284A (en) * | 2022-05-10 | 2022-06-07 | 中北大学 | One-fire cogging die and method for alloy bar and upsetting-extruding-upsetting large deformation method |
| CN114589284B (en) * | 2022-05-10 | 2022-07-29 | 中北大学 | One-fire cogging die and method for alloy bar stock and upsetting-extruding-upsetting large deformation method |
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Application publication date: 20121017 |