CN104097040A - Rice harvester blade and manufacturing method - Google Patents
Rice harvester blade and manufacturing method Download PDFInfo
- Publication number
- CN104097040A CN104097040A CN201410304581.8A CN201410304581A CN104097040A CN 104097040 A CN104097040 A CN 104097040A CN 201410304581 A CN201410304581 A CN 201410304581A CN 104097040 A CN104097040 A CN 104097040A
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- Prior art keywords
- blade
- cutting edge
- edge portion
- sides
- temperature
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Classifications
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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
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D45/00—Harvesting of standing crops
- A01D45/04—Harvesting of standing crops of rice
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Knives (AREA)
Abstract
The invention discloses a rice harvester blade and a manufacturing method, and relates to the technical field of mechanical processing. The rice harvester blade comprises a trapezoidal cutting edge part with small front and big back, and a quadrilateral installation part connected with the cutting edge part, wherein serrated teeth are distributed on the trapezoidal sloping sides at the two sides of the cutting edge part; the manufacturing method of the rice harvester blade comprises the following steps: a billet of the blade is subjected to forging, milling, heat treatment and subzero treatment and grinding to obtain the rice harvester blade. Compared with the prior art, the rice harvester blade has higher strength, plasticity and toughness, can not only harvest rice straws, but also can cut up small bricks and stones, the problem that the blade is easily cracked and scrapped when encountering a hard object is solved, and the service life is prolonged.
Description
Technical field
The present invention relates to Machining Technology field, especially a kind of processing method of the blade for rice harvester.
Background technology
The application of united reaper in modern agriculture is more and more general, especially paddy rice, and the harvesting of paddy rice adopts the area of rice harvester to account for the more than 80% of Monitoring of Paddy Rice Plant Area.And rice harvester in the course of the work, the most easily parts of wearing and tearing are exactly blade, run into the hard thing such as stone, tree root and guard is become flexible or distortion in cutting process, and ledger-plate height is inconsistent; And blade loosing of rivet is collided when cutting etc. and all may be caused that cutting blade damages.Have a kind of rice harvesting machine knife blade, the tetragonal installation portion that this blade has trapezoidal cutting edge portion and links with this blade, this blade is steel-casting, conventionally to the processing method of this blade be put the first edge on a knife or a pair of scissors mouthful and sharpening mouth after can use.Thisly be contained in blade on rice harvester in use there are the following problems: in the time that blade is encountered stone or hard thing, easily burst apart, cause breaks down to be scrapped.
Summary of the invention
Problem to be solved by this invention is to provide a kind of rice harvesting machine knife blade and processing method, easily causes the problem of bursting apart to solve when existing blade is encountered hard thing.
In order to address the above problem, the technical scheme of the rice harvesting machine knife blade that the present invention adopts is: this rice harvesting machine knife blade, the tetragonal installation portion that has pre-small post-large trapezoidal cutting edge portion and link with this blade is distributed with jagged tooth on the trapezoidal hypotenuse in the both sides of described cutting edge portion.
In order to address the above problem, the technical scheme of the processing method of the rice harvesting machine knife blade that the present invention adopts is: a kind of rice harvesting machine knife blade and processing method, the tetragonal installation portion that rice harvesting machine knife blade has pre-small post-large trapezoidal cutting edge portion and links with this blade, on the trapezoidal hypotenuse in the both sides of described cutting edge portion, be distributed with jagged tooth, it comprises the following steps:
A, casting steel casting is become to the blank by the blade that has pre-small post-large trapezoidal cutting edge portion and form with the tetragonal installation portion that this blade links;
B, blank heating to 750 that steps A is obtained DEG C～790 DEG C, be incubated 30 minutes～50 minutes, forge the trapezoidal both sides of cutting edge portion tooth portion to be processed, make the bottom surface of He both sides, the inclined-plane outer rim that dips down of end face formation of Chi Bu both sides, both sides outer rim form the face that is inclined upwardly, as shown in Figure 2; In the process forging, note keeping the temperature of blank to remain on more than 650 DEG C, temperature deficiency is heated between 750 DEG C～790 DEG C immediately;
C, step B is completed to the blank cutting edge portion both sides tooth portion to be processed forging carrying out profile of tooth Milling Process, is that circular arc connects between adjacent tooth root, as shown in Figure 3, obtains cutting edge portion and have the blade semi-finished product of serrated teeth;
D, the blade semi-finished product that step C is obtained are heat-treated, first be heated to 200 DEG C～300 DEG C with the programming rate of 50 DEG C/h～100 DEG C/h, be incubated 1 hour～2 hours, and then be heated to 550 DEG C～620 DEG C with the programming rate of 80 DEG C/h～100 DEG C/h, be incubated 0.5 hour～1 hour, be heated to 1110 DEG C～1130 DEG C with the programming rate of 120 DEG C/h～150 DEG C/h again, carry out Quenching Treatment after being incubated 1 hour～1.5 hours, Quenching Treatment adopts shrend; Enter before water at blade semi-finished product, the temperature of water is 25 DEG C～35 DEG C, and blade semi-finished product were put into water after 5 minutes, and water temperature will be lower than 45 DEG C;
E, the blade semi-finished product that complete Quenching Treatment are carried out to subzero treatment, the temperature of subzero treatment is-190 DEG C to-200 DEG C, be incubated 1 hour～2 hours, then at the temperature of 200 DEG C～230 DEG C, carry out tempering, when tempering, programming rate is 70 DEG C/h～90 DEG C/h;
F, use tool grinder that half-finished the blade that completes subzero treatment cutting edge portion is ground, obtain rice harvesting machine knife blade.
Owing to having adopted technique scheme, the present invention compared with prior art has following beneficial effect: because the cutting edge portion process of bit blank forges, and made blade semi-finished product pass through a series of heat treatment and subzero treatment, improve its toughness, there is higher intensity, plasticity and toughness, not only can cutting rice stalk, can also shred small-sized brick and stone simultaneously, when having solved blade and encountering hard thing, easily cause to burst apart to cause the problem of scrapping, increase the service life.
Brief description of the drawings
Fig. 1 is the structural representation of the rice harvesting machine knife blade of the embodiment of the present invention.
Fig. 2 is the cutaway view at the A-A place of Fig. 1.
Fig. 3 is the partial enlarged drawing at the B place of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Embodiment 1:
Rice harvesting machine knife blade as shown in Figure 1, the tetragonal installation portion that has pre-small post-large trapezoidal cutting edge portion and link with this blade is distributed with jagged tooth on the trapezoidal hypotenuse in the both sides of described cutting edge portion.
Embodiment 2:
A processing method for rice harvesting machine knife blade, the tetragonal installation portion that rice harvesting machine knife blade has pre-small post-large trapezoidal cutting edge portion and links with this blade is distributed with jagged tooth on the trapezoidal hypotenuse in the both sides of cutting edge portion, and it comprises the following steps:
A, casting steel casting is become to the blank by the blade that has pre-small post-large trapezoidal cutting edge portion and form with the tetragonal installation portion that this blade links;
B, blank heating to 750 that steps A is obtained DEG C～790 DEG C, be incubated 30 minutes～50 minutes, forge the trapezoidal both sides of cutting edge portion tooth portion to be processed, make the bottom surface of He both sides, the inclined-plane outer rim that dips down of end face formation of Chi Bu both sides, both sides outer rim form the face that is inclined upwardly, as shown in Figure 2; In the process forging, note keeping the temperature of blank to remain on more than 650 DEG C, temperature deficiency is heated between 750 DEG C～790 DEG C immediately;
C, step B is completed to the blank cutting edge portion both sides tooth portion to be processed forging carrying out profile of tooth Milling Process, is that circular arc connects between adjacent tooth root, as shown in Figure 3, obtains cutting edge portion and have the blade semi-finished product of serrated teeth;
D, the blade semi-finished product that step C is obtained are heat-treated, first be heated to 200 DEG C with the programming rate of 50 DEG C/h, be incubated 1 hour, and then be heated to 550 DEG C with the programming rate of 80 DEG C/h, be incubated 0.5 hour, be heated to 1110 DEG C with the programming rate of 120 DEG C/h again, be incubated and carry out Quenching Treatment after 1 hour, Quenching Treatment adopts shrend; Enter before water at blade semi-finished product, the temperature of water is 25 DEG C, and blade semi-finished product were put into water after 5 minutes, and water temperature will be lower than 45 DEG C;
E, the blade semi-finished product that complete Quenching Treatment are carried out to subzero treatment, the temperature of subzero treatment is-190 DEG C, is incubated 1 hour, then at the temperature of 200 DEG C, carries out tempering, and when tempering, programming rate is 70 DEG C/h;
F, use tool grinder that half-finished the blade that completes subzero treatment cutting edge portion is ground, obtain rice harvesting machine knife blade.
Embodiment 3:
A processing method for rice harvesting machine knife blade, the tetragonal installation portion that rice harvesting machine knife blade has pre-small post-large trapezoidal cutting edge portion and links with this blade is distributed with jagged tooth on the trapezoidal hypotenuse in the both sides of cutting edge portion, and it comprises the following steps:
A, casting steel casting is become to the blank by the blade that has pre-small post-large trapezoidal cutting edge portion and form with the tetragonal installation portion that this blade links;
B, blank heating to 750 that steps A is obtained DEG C～790 DEG C, be incubated 30 minutes～50 minutes, forge the trapezoidal both sides of cutting edge portion tooth portion to be processed, make the bottom surface of He both sides, the inclined-plane outer rim that dips down of end face formation of Chi Bu both sides, both sides outer rim form the face that is inclined upwardly, as shown in Figure 2; In the process forging, note keeping the temperature of blank to remain on more than 650 DEG C, temperature deficiency is heated between 750 DEG C～790 DEG C immediately;
C, step B is completed to the blank cutting edge portion both sides tooth portion to be processed forging carrying out profile of tooth Milling Process, is that circular arc connects between adjacent tooth root, as shown in Figure 3, obtains cutting edge portion and have the blade semi-finished product of serrated teeth;
D, the blade semi-finished product that step C is obtained are heat-treated, first be heated to 300 DEG C with the programming rate of 100 DEG C/h, be incubated 2 hours, and then be heated to 620 DEG C with the programming rate of 100 DEG C/h, be incubated 1 hour, be heated to 1130 DEG C with the programming rate of 150 DEG C/h again, be incubated and carry out Quenching Treatment after 1.5 hours, Quenching Treatment adopts shrend; Enter before water at blade semi-finished product, the temperature of water is 35 DEG C, and blade semi-finished product were put into water after 5 minutes, and water temperature will be lower than 45 DEG C;
E, the blade semi-finished product that complete Quenching Treatment are carried out to subzero treatment, the temperature of subzero treatment is-200 DEG C, is incubated 2 hours, then at the temperature of 230 DEG C, carries out tempering, and when tempering, programming rate is 90 DEG C/h;
F, use tool grinder that half-finished the blade that completes subzero treatment cutting edge portion is ground, obtain rice harvesting machine knife blade.
Claims (2)
1. a rice harvesting machine knife blade, the tetragonal installation portion that has pre-small post-large trapezoidal cutting edge portion and link with this blade, is characterized in that: on the trapezoidal hypotenuse in the both sides of described cutting edge portion, be distributed with jagged tooth.
2. the processing method of a rice harvesting machine knife blade, the tetragonal installation portion that rice harvesting machine knife blade has pre-small post-large trapezoidal cutting edge portion and links with this blade, on the trapezoidal hypotenuse in the both sides of described cutting edge portion, be distributed with jagged tooth, it is characterized in that comprising the following steps:
A, casting steel casting is become to the blank by the blade that has pre-small post-large trapezoidal cutting edge portion and form with the tetragonal installation portion that this blade links;
B, blank heating to 750 that steps A is obtained DEG C～790 DEG C, be incubated 30 minutes～50 minutes, forge the trapezoidal both sides of cutting edge portion tooth portion to be processed, make the end face of Chi Bu both sides, both sides outer rim form the face that is inclined upwardly of bottom surface formation of He both sides, the inclined-plane outer rim that dips down; In the process forging, note keeping the temperature of blank to remain on more than 650 DEG C, temperature deficiency is heated between 750 DEG C～790 DEG C immediately;
C, step B is completed to the blank cutting edge portion both sides tooth portion to be processed forging carrying out profile of tooth Milling Process, is that circular arc connects between adjacent tooth root, obtains cutting edge portion and have the blade semi-finished product of serrated teeth;
D, the blade semi-finished product that step C is obtained are heat-treated, first be heated to 200 DEG C～300 DEG C with the programming rate of 50 DEG C/h～100 DEG C/h, be incubated 1 hour～2 hours, and then be heated to 550 DEG C～620 DEG C with the programming rate of 80 DEG C/h～100 DEG C/h, be incubated 0.5 hour～1 hour, be heated to 1110 DEG C～1130 DEG C with the programming rate of 120 DEG C/h～150 DEG C/h again, carry out Quenching Treatment after being incubated 1 hour～1.5 hours, Quenching Treatment adopts shrend; Enter before water at blade semi-finished product, the temperature of water is 25 DEG C～35 DEG C, and blade semi-finished product were put into water after 5 minutes, and water temperature will be lower than 45 DEG C;
E, the blade semi-finished product that complete Quenching Treatment are carried out to subzero treatment, the temperature of subzero treatment is-190 DEG C to-200 DEG C, be incubated 1 hour～2 hours, then at the temperature of 200 DEG C～230 DEG C, carry out tempering, when tempering, programming rate is 70 DEG C/h～90 DEG C/h;
F, use tool grinder that half-finished the blade that completes subzero treatment cutting edge portion is ground, obtain rice harvesting machine knife blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410304581.8A CN104097040A (en) | 2014-06-30 | 2014-06-30 | Rice harvester blade and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410304581.8A CN104097040A (en) | 2014-06-30 | 2014-06-30 | Rice harvester blade and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104097040A true CN104097040A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410304581.8A Pending CN104097040A (en) | 2014-06-30 | 2014-06-30 | Rice harvester blade and manufacturing method |
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| CN (1) | CN104097040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287262A (en) * | 2018-07-26 | 2019-02-01 | 柳州瑞兴农机配件加工厂 | A kind of rice harvesting machine knife blade and its processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080000210A1 (en) * | 2006-07-03 | 2008-01-03 | Alamo Group, Inc. | Reciprocating breakaway knife |
| US20080083207A1 (en) * | 2006-10-10 | 2008-04-10 | Busatis Gmbh | Mower sickle bar |
| CN102265739A (en) * | 2011-06-19 | 2011-12-07 | 云南省农业机械研究所 | Blade of three-surface tooth cutter |
| CN102948296A (en) * | 2012-11-20 | 2013-03-06 | 无锡康柏斯机械科技有限公司 | Harvester blade suitable for harvesting crops with strong toughness |
| CN103643114A (en) * | 2013-12-25 | 2014-03-19 | 魏周 | Alloy steel for harvester blade and machining method of alloy steel |
| CN103692169A (en) * | 2013-12-25 | 2014-04-02 | 魏周 | Method for machining blades of combined harvesters for wheat |
-
2014
- 2014-06-30 CN CN201410304581.8A patent/CN104097040A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080000210A1 (en) * | 2006-07-03 | 2008-01-03 | Alamo Group, Inc. | Reciprocating breakaway knife |
| US20080083207A1 (en) * | 2006-10-10 | 2008-04-10 | Busatis Gmbh | Mower sickle bar |
| CN102265739A (en) * | 2011-06-19 | 2011-12-07 | 云南省农业机械研究所 | Blade of three-surface tooth cutter |
| CN102948296A (en) * | 2012-11-20 | 2013-03-06 | 无锡康柏斯机械科技有限公司 | Harvester blade suitable for harvesting crops with strong toughness |
| CN103643114A (en) * | 2013-12-25 | 2014-03-19 | 魏周 | Alloy steel for harvester blade and machining method of alloy steel |
| CN103692169A (en) * | 2013-12-25 | 2014-04-02 | 魏周 | Method for machining blades of combined harvesters for wheat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287262A (en) * | 2018-07-26 | 2019-02-01 | 柳州瑞兴农机配件加工厂 | A kind of rice harvesting machine knife blade and its processing method |
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Application publication date: 20141015 |